Questions Asked on
February 21, 2013

  1. math

    pat has some t-shirts. 1/4 of the t-shirts are pink, 1/2 of the remainder are white and the rest are purple. what fraction of the t-shirts are purple?

    asked by Shohanur
  2. Algebra

    In a recent survey of middle school students about pizza toppings, it was found that 25 students like pepperoni pizza, 31 like banana peppers pizza, and 5 liked both pepperoni and banana peppers on their pizza. If 65 students were surveyed, how many

    asked by Cassie
  3. chemistry

    A solution contains 2 mEq/ml of KCL (Molecular weight 74.5). If a 20 ml ampule of this solution is diluted to 1 liter what is the percent strength of the resulting solution?

    asked by Ann
  4. math

    of the total number of spectators at a circus show, 1/4 are men, 2/5 of the remaining number of spectators are women. there are 132 women at the circus show. how many children are at the circus show?

    asked by shohanur
  5. chemistry

    the concentration of urea (MW=60.0g/mol) in a soltuion prepared by dissolving 16g of urea in 39g of H2O is ____ molal

    asked by nat
  6. physics

    A projectile is fired from the origin (at y = 0 m) as shown in the diagram. The initial velocity components are V0x = 310 m/s and V0y = 26 m/s. The projectile reaches maximum height at point P, then it falls and strikes the ground at point Q, which is 20 m

    asked by Anonymous
  7. English Please help

    8. Neither of the glasses _________ full of juice. were weren't *was wasn't 9. In the living room _________ many interesting pieces of art. is isn't *are aren't Thank You

    asked by Mohammed
  8. chemistry

    if 125g of magnesium sulfate heptahydrate is completely dehydrated, how many grams of anhydrous salt will remain? i would really appreciate anyone's help

    asked by rose
  9. math

    A major corporation is building a 4325 acre complex of homes, offices, stores, schools, and churches in the rural community of Glen Cove. As a result of this development, the planners have estimated that Glen Clove's population (in thousands) t yr from now

    asked by Wynter (please help)
  10. chemistry

    A sample of liquid consisting of only C,H and O and having a mass of 0.5438g was burned in pure oxygen and 1.039g of CO2 and 0.6369g H2O were obtained. what is the empirical formula of the compound?

    asked by rose
  11. Trigonometry

    Write the trigonometric expression as an algebraic expression. 1.) SIN(ARCSIN X+ARCCOS X) ANSWER: 1 2.) SIN(ARCTAN 2X-ARCCOS X) ANSWER: 2x²-SquareRoot of 1-x²/Square Root of 4x²+1.

    asked by AwesomeGuy
  12. MATH

    Donald works 1 and 3/4 hour a day at a book store. if he is paid $7 a day, how much money will he make in 5 days?

    asked by Shohanur
  13. physics

    at what distance would repulisve force between two electrons have a magnitude of 2.00 n between two protons ? 2=kq1q2/r^2 r^2 = 9.0 x10^9 x (1.6 x 10^-19)^2 So, what is the R, on my answer from, this is 1.07 x10^-14m, however, I cannot get this, can you

    asked by yan
  14. Algebra

    What are the coordinates of the vertex of the graph of the function y = –3x² –12x + 3? A.(–2, 29) B.(2, –15) C.(2, –9) D.(–2, 15) I think it is D?

    asked by Cassie
  15. Math

    A college freshman must take a science course, a humanities course, an elective course, and a mathematics course for the first term of the school year. If he or she may select any of the six science courses, any of the four humanities courses, any of the

    asked by Therese
  16. Algebra

    Which equation represents the axis of symmetry of the function y = –2x² + 4x –6? (1 point) y = 1 x = 1 x = 3 x = –3

    asked by Minnie
  17. Chemistry

    What is the ionic equation for (NH4)2CO3=2NH3+CO2+H2O

    asked by Kerry
  18. help please english

    what is a word that is in the ip family that means a baby bird. I have no clue need help

    asked by ray
  19. biomechanics

    a sailboarder is zipping northeast across the river wit ha velocity of 10 m/s relative to the water the river current is moving the water north at a velocity of 3 m/s downstream. if the angle between the relative velocity of the sailboard and the river

    asked by Anonymous
  20. chemistry

    A 2.50g sample of a hydrate of calcium nitrate was heated, and only 1.70g of the anhydrous salt remained. what is the formula of the hydrate?

    asked by rose
  21. chemistry

    the vapour pressure of 2.1%solution of non electrolyte in water at 100 degree celsius is 755 mm Hg.calculate the molar mass of the solute

    asked by malvika
  22. english

    Add punctuation to the following excerpt. Writing under the name of Diedrich Knickerbocker Washington Irving aimed his potent satire at as diverse topics as political rivals such as Thomas Jefferson to the very ideal of looking back on the past

    asked by kolina
  23. Physics2

    "The heat engine uses 1.00x10^-2 mol of a diatomic gas as the working substance. Determine the temperatures at the 3 points." From 1-2, it's an adiabatic process and the constants are (P)(V^(7/5)) or (T)(V^(2/5)). From 2-3, it's an isobaric process with

    asked by Summer
  24. Chemistry

    A 1.0-mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.010 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. a color change occured after 40 seconds. assuming 25 drops per mL for all solutions, determine the initial molar

    asked by Anonymous
  25. college algebra

    driving along a crowded freeway you notice that it takes a time to go from one mile marker to the next. when you increase your speed by 8.4 mi/hr the time to go one mile decreased by 14 seconds. What was your original speed?

    asked by katie
  26. Geometry - Transformations and Dilations

    When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?

    asked by Knights
  27. Chemistry

    In a 1.0× 10–4 M solution of HClO(aq), identify the relative molar amounts of these species from most to least: HClO, OCl, OH^-, H30^+, H20

    asked by Ethan
  28. Chemistry

    The molal boiling-point constant for water is 0.51 degrees C/molal. The boiling point of a 1.00 molal solution of Ca(NO3)2 should be increased by: A.) exactly 1.53 or B.) Somewhat less than 1.53 This is how I worked the problem: Ca(NO3)2 dislocates into 3

    asked by Marcus
  29. Chemistry

    How much concentrated solution would you take to prepare 2.80L of 0.475M HCl by mixing with water? Hydrochloric acid is usually purchased in a concentrated form that is 37.0% HCl by mass and has a density of 1.20g/mL.

    asked by M J
  30. Math

    Members of a school boosters club want to sell at least 10 school jackets and at least  21 caps during a fundraiser to cover their regular club expenses. The club will make $14 

    asked by T-perry
  31. Chemistry

    A 1.0-mL volume of 0.010 M H2SO3 is added to a mixture of 12 drops of 0.010 M HIO3, 8 drops of deionized water, and 1 drop of starch solution. a color change occured after 40 seconds. the rate of reaction is measured by the disappearance of HIO3. got the

    asked by Anonymous
  32. maths-TRIGNOMETRY

    show that: 2^5 cos^2a sin^4a=cos6a-2cos4a- cos2a + 2

    asked by Anonymous
  33. Algebra I

    The cost of 4 scarves and 6 hats is $52. The cost of two hats is $1 more than the cost of one scarf. What are the costs of one scarf and one hat? Please show me how to set this up and work it.

    asked by Jane
  34. Algebra

    Which is the best measure of central tendency for the type of data below–the mean, the median, or the mode? Explain. Hours of sleep each night A.Median; there will be outliers B.Range; there are no outliers C.Mode; the data are non-numeric D.Mean; the

    asked by Cassie
  35. physics

    Calculate the speed of a proton having a kinetic energy of 1.00 × 10^−19 J and a mass of 1.673 × 10^−27kg. Answer in units of m/s

    asked by nathan
  36. physics

    a point charge of -4.00nc is the origin, and a second point charge of +6.00nc is on the x axis at x=0.800m. Find the magnitude and directin of the electric field at each of the following points on the x asix : a) x =20.0 cm b) x=1.20 m c) x = -20.0 cm

    asked by yan
  37. physics

    A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 6.9 m/s. If the coefficient of friction between the sled's runners and snow is 0.045 and the boy and sled together weigh 580 N, how far does the sled travel on the

    asked by Anonymous
  38. english

    Write a paragraph naming three possible agendas and one example of each that you might find in the media.

    asked by leslie
  39. Math

    Sam cut a pie into equal slices. There are only 3 slices left. The angle measure of the 3 slices is 72 degrees How many slices did sam cut the pie into?

    asked by Trent
  40. Engineering Econonmy

    For your 21st birthday, your grandfather offers you a gift of $1000 today. However, you have the choice of waiting 3 years and receiving $1500 OR waiting 5 years and receiving $3000. If your money grows at a rate of 8 percent compounded annually, which

    asked by nutz77
  41. Finance

    1. Firm L has debt with a market value of $200,000 and a yield of 9%. The firm's equity has a market value of $300,000, its earnings are growing at a rate of 5%, and its tax rate is 40%. A similar firm with no debt has a cost of equity of 12%. Under the MM

    asked by jone
  42. Pharmacy Calculaions

    I can't get this right! Please help... Based on the formula below, what quantities of each are needed to make 180 ml of this lotion? Benzyl Benzoate 250 ml Triethanolamine 5 ml Oleic Acid 20 ml Purified water to make 1000 ml

    asked by Elle
  43. Physics

    A daredevil plans to bungee jump from a balloon 52.0 m above the ground. He will use a uniform elastic cord, tied to a harness around his body, to stop his fall at a point 15.0 m above the ground. Model his body as a particle and the cord as having

    asked by Michaela
  44. science

    jellyfish are classified as stinging-cell animals because they have a a. hollow body b. segmented body c. shell d. round body is a planarian is a parasite?

    asked by Please&ThankYou
  45. science

    The moon is the earth's nearest neighbor in space the radius of the moon is approximately one quarter of the earth's radius and it's mass is one eightieth of the earth's mass.(a)calculate the weight of an object with a mass of 50.0kg on the surface of the

    asked by lebo
  46. math

    Donald works 1 and 3/4 hour a day at a book store. if he is paid $7 a day, how much money will he make in 5 days?

    asked by Shohanur
  47. Chemistry

    A laboratory stockroom has a stock solution of 90%(m/v) sulfuric acid,H2SO4(aq). If a technician dilutes 50ml of the stock solution to a final volume of 300ml, what will be the new mass/volume percent concentration?(HINT: the dilution formula can be used

    asked by Lori
  48. Physics

    a Negative Charge of -6.0 x 10^-6 C exerts an attractive force of 65 N on a second charge 0.050 m away. What is the magnitude on the second charge?

    asked by Tadeija
  49. Math

    A circle is divided into 18 equal parts. How many degrees is the angle for each part? How many degrees is the angle for 5 parts?

    asked by Trent
  50. math

    jodys has a rectangular piece of fabric 7/8 yard long and 4/5 yard wide. a)what is the area of the pieces of fabric?(I already did this one) b) jody decides to share the piece of fabric equally with her friend. what is the area of fabric each person

    asked by shohanur
  51. Applied Calculus

    Use differentials to approximate the quantity (give answer to 4 decimal places) 4th root of 256.6.

    asked by Jacob
  52. MATH

    UNSCRAMBLE 25 LETTERS TO MAKE 8 WORDS THAT ANSWER THE QUESTION WHAT'S WRONG WITH GETTING A HAIRCUT? LETTERS: H I T I S B E T E R T O G E T T S E M L O C R E T

    asked by x
  53. geometry

    Which type of angle do construction workers use when building to make sure that the walls and floors of a building are perpendicular

    asked by Sandyf
  54. please help with geometry - dilation

    When a square of area 4 is dilated by a scale factor of k, we obtain a square of area 9. Find the sum of all possible values of k. I do not understand...it is not 3/2, as I was told, but I don't understand why? Help?

    asked by Knights
  55. Physics

    A 2.1 kg mass is connected to a spring with spring constant k= 180 N/m and unstretched length 16 cm. The pair are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. The mass is set into circular motion at

    asked by Courtney
  56. science

    Name 2 elements that would have properties similar to Beryllium with atomic weight higher than 130.

    asked by teacher1
  57. Earth Science

    Why is potassium-argon dating most applicable to dating very old rocks? potassium’s long half-life potassium’s short half-life argon’s long half-life argon’s short half-life

    asked by Anonymous
  58. Composition

    Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to sentence structure. Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically

    asked by Jules
  59. Organic

    Balanced reaction for cyclohexene to adipic acid. Used na2wo4 with h2o2, PTC, and khso4.

    asked by Chris
  60. college chemistry

    how to make a 1:8 dilution of chemical Y. You have 350 mililiters of chemical Y. how much diluent do you need?

    asked by chuck
  61. math

    jodys has a rectangular piece of fabric 7/8 yard long and 4/5 yard wide. a)what is the area of the pieces of fabric?(I already did this one) b) jody decides to share the piece of fabric equally with her friend. what is the area of fabric each person

    asked by shohanur
  62. Chemistry

    Hydrogen peroxide solution, H2O2(aq), is available with a concentration of 1.667mol/L. When diluted to a concentration of 0.25mol/L, the solution is used as a disinfectant. What volume of water should be added to 100 mL of the concentrated hydrogen

    asked by Lori
  63. chemistry

    a 5.00g sample of a hydrate of barium chloride was heated, and only 4.30g of the anhydrous salt remained. what is the formula of the hydrate?

    asked by rose
  64. Statistics

    Which of the following is an accurate description of Simpson's paradox? When groups of data are aggregated, an association can get stronger because of a confounding variable. That confounding variable is usually the number of observations in different

    asked by Jon
  65. science

    List 3 other elements similar to properties of Flourine. a. Why did you choose these? b. How did you determine their properties were similar?

    asked by teacher1
  66. Physics

    Find the mass of water that vaporizes when 3.94 kg of mercury at 248 °C is added to 0.183 kg of water at 83.0 °C.

    asked by Ashley
  67. Chemistry - Mass-Mass conversion & Percent yield

    Please show work 1. N2 (g) + 3H2(g) ---> 2NH3(g) 100.0 g of nitrogen reacts completely with excess hydrogen, and 34.0 g of NH3 are obtained what is the percent yield of ammonia? 2. 2Al (s) + 3Cl2(g) ---> 2AlCl3(s) Assume that 0.40 g of Al is mixed with

    asked by Anonymous
  68. Chemistry

    What is the lewis dot structure for copper?

    asked by Valerie
  69. math

    pat has some t-shirts. 1/4 of the t-shirts are pink, 1/2 of the remainder are white and the rest are purple. what fraction of the t-shirts are purple?

    asked by Shohanur
  70. chem

    For each of the following equilibria, use Le Chatelier's principle to predict the direction of reaction when the volume is increased. (a) C(s) + H2O(g) CO(g) + H2(g) (b) 2 H2(g) + O2(g) 2 H2O(g) (c) 2 Fe(s) + 3 H2O(g) Fe2O3(s) + 3 H2(g) a i put no change

    asked by Hannah
  71. chemistry

    How do you find q in q=mC delta t without the mass

    asked by Jake
  72. physics

    Calculate the magnitude of the electric field at one corner of a square 1.48m on a side if the other three corners are occupied by 1.92×10−6 Ccharges.

    asked by Steve
  73. Geology

    How were divisions of time separated when scientists created the geologic time scale? by the thickness of rock strata by the color of rock strata by the fossils found in rock strata by the location of rock strata

    asked by Hi
  74. math

    Tina completed 2/3 of her homework before dinner. George c ompleted 4/7 of his homework before dinner. Who completed a greater fraction of homework?

    asked by Debbie
  75. English

    Revise the following paragraph, improving it without changing its overall meaning. Pay particular attention to sentence structure. Ever been assigned to work on a group project for class! Many students dread group projects: because one student typically

    asked by Christelle
  76. English

    Expand each sentence below by adding words or phrases that modify the verb. Questions after each item suggest details you can add. An example is given. Example: Ancient people painted. How did they paint? Where did they paint? Ancient people painted

    asked by kaylee .
  77. math $$

    The graph of 5x-2y=10 intersects the x-axis and y-axis what are the order pairs for these two points of intersection? A.(2,0) and (0,5) B.(2,0) and (0,-5) C.(-2,0) and (0,5) D.(-2,0) and (0,-5)

    asked by Angie
  78. Math

    Kurt cut pizzasinto wedges measuring 40 degrees. I feach person eats one piece of pizza how many people could he feed with two whole pizzas

    asked by Trent
  79. chemistry

    A solution is prepared by mixing 50.7 mL of 0.28 M Pb(NO3)2 with 70.8 mL of 1.0 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6 10-5.

    asked by jeff
  80. math

    A marathon runner ran the first 5 mi. in 32.5 min. If she continues running at this pace, how long will it take her to run the entire marathon of 26.2 mi?

    asked by Brittany
  81. analytical chemistry

    your lab possesses a stock solution of NaOH whose concentration is approx. 0.1M. you prepare a secondary solution by diluting 15.00mL of this stock solution to a total volume of 250.0 mL. you titrate a 50.00mL aliquot of the secondary solution with a

    asked by holly
  82. Physics

    A point charge Q1=−2 μC is located at x=0, and a point charge Q2=+8 μC is placed at x=−0.5 m on the x-axis of a cartesian coordinate system.The goal of this problem is to determine the electric field, E⃗ (x)=E(x)xˆ, at various points along the

    asked by Anonymous
  83. Physics (Velocity in two dimensions)

    Please help, The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time

    asked by Kathy
  84. science please help

    So I have to do this project on simple machines. The invention we need to make should have at least 2 simple machines on it. We also have to draw it on posterboard and write a paragraph about it. One more thing is that it must make a person's life easier

    asked by Anonymous
  85. trig

    Express sin4xcos3x as a sum or differences of sines and cosines

    asked by Fabian onyango ndege
  86. Math

    Kelsea has 6 coins. One-third of her coins are dimes. The value of the dimes is one-fourth the value of the coins. How much money does Kelsea have?

    asked by Alex
  87. math $$

    The graph of 5x-2y=10 intersects the x-axis and y-axis what are the order pairs for these two points of intersection? A.(2,0) and (0,5) B.(2,0) and (0,-5) C.(-2,0) and (0,5) D.(-2,0) and (0,-5)

    asked by Angie
  88. Marketing

    What lessons from McDonald’s success in the global marketplace are transferable across industries?

    asked by Tameika
  89. organic chem

    Classify as primary, secondary, tertiary alcohols. i. 2-butanol ii. 3-methyl-3-pentanol iii. 2-methyl-1-pentanol iv. 3-chlorocyclohexanol

    asked by meghan
  90. organic chem

    Dehydrate the following a. 2-methyl-1-propanol b. 2-methylcyclohexanol c. 2-methyl-1-phenyl-1-propanol d. 1-methylcyclopentanol

    asked by meghan
  91. science

    How many atoms are in Zinc Chloride, ZnCl2?

    asked by teacher1
  92. math

    Eight subtracted from six times a number is -134. What is the number? A) Translate the statement above into an equation that you can solve to answer this question. Do not solve it yet. Use x as your variable. solve for x

    asked by kelly
  93. math

    The price of a new car increased from $14,500 to $16,200. What was the percent of increase?

    asked by Tammy
  94. physics

    A duck has a mass of 2.10 kg. As the duck paddles, a force of 0.110 N acts on it in a direction due east. In addition, the current of the water exerts a force of 0.240 N in a direction of 47.0° south of east. When these forces begin to act, the velocity

    asked by bebenel
  95. chemistry

    what is the formula for the sodium sulfate if 3.54g of dry solid remain after 8.50g of hydrate are heated??

    asked by rose
  96. algebra 1

    thr ratio of two integers is 6:13 the smaller interger is 54. find the larger interger

    asked by john
  97. Physics

    A cylindrical aluminum pipe of length 1.52 m has an inner radius of 2.20 10-3 m and an outer radius of 3.00 10-3 m. The interior of the pipe is completely filled with copper. What is the resistance of this unit? (Hint: Imagine that the pipe is connected

    asked by Elizabeth
  98. Physics

    Two resistances, R1 and R2, are connected in series across a 15-V battery. The current increases by 0.050 A when R2 is removed, leaving R1 connected across the battery. However, the current increases by just 0.025 A when R1 is removed, leaving R2 connected

    asked by Elizabeth
  99. maths-urgently needed

    show that: 2^5 cos^2a sin^4a = cos6a-2cos4a- cos2a + 2

    asked by Anonymous
  100. Economics

    Ben deposits $5000 now into an account that earns 7.5 percent interest compounded annually. He then deposits $1000 per year at the end of the first and second years. How much will the account contain 10 years after the initial deposit?

    asked by manny
  101. music

    Why is jazz considered to be "American" music?

    asked by justastudent
  102. math

    distribution of adjust gross income in individual federal income tax returns shows: Income: 30-74, 75-199, more than 200 Probability: 0.315, 0.180, 0.031 1. What is the probability that a randomly chosen return shows an adjusted gross income of $30,000 or

    asked by sejul
  103. math

    Trey keeps sports cards in 3 drawers. Each drawer contains exactly 120 cards. In each drawer 2/3, of the cards are baseball cards, and 1/3 of the cards are a mixture of football, hockey, baseball, and soccer cards. If Trey decides to trade 1/4 of his

    asked by bianca
  104. MATH PLZ

    Which is true when a negative nuber is subtracted from a positve number? A.the difference is always 0 B.the difference is always positive C.the difference is always negative D.the difference could be negative or positive *i need examples to

    asked by Angie
  105. science

    A man has a mass of 80.0kg is standing on the surface of the earth.(a)calculate the magnitude of the attractive force that the earth exerts on the man

    asked by lebo
  106. physics

    An electron with speed = 2.54×10^7m/s is traveling parallel to an electric field of magnitude = 1.66×104 N/C. How far will the electron travel before it stops? How much time will elapse before it returns to its starting point?

    asked by Elmer
  107. math $$

    k ty i have 4 more *so sorry* Carson wanted to make a cylindrical pillow for his mother's b-day the pillow was to be 15 inches long with a diameter of 6 inches and would be filled with stuffing. determine how many cubic inches of stuffing carson will need

    asked by Angie
  108. calculus

    How is the integral of cos(2x) = sinxcosx?

    asked by Daniel
  109. Physics

    A flat thin non-conducting ring has an inner radius R1 and an outer radius R2 . The disk is uniformly charged with charge per unit area σ(>0) . (a) What is the electric field at the center, P, of the ring? Express your answer in terms of the following

    asked by Anonymous
  110. chemistry

    In the reaction Mg(s) + 2HCl(aq) d H¿(g) + MgCl¿(aq), how many moles of hydrogen gas will be produced from 250.0 milliliters of a 3.0 M HCl in an excess of Mg?

    asked by Payton
  111. Physics

    a block of mass m= 15.6kg is to be pushed with force F a distance of D=5.65m along an incline so that it s raised a distance h=3.86m in the process.Assuming frictionless surfaces. Determine: A) The work done by the force F parallel to the incline to pst

    asked by nemo
  112. Math

    Find the future value of $800 deposited at 5% for 2 years if the account pays simple interest, and the account pays interest compounded annually

    asked by Muffin
  113. Help math calc

    Find the future value of $700 deposited at 3% for 9 years if the account pays simple interest and the account pays compounded annually? The future value of an account that pays simple interest is what?

    asked by Tiffany
  114. MATH

    USE THE AC METHOD FACTORING 9+^2+5+-4 CAN SOME ONE SHOW ME THE STEP TO SOLVING THIS PROBLEM

    asked by mace
  115. Chemistry :) simple question

    When an acid reacts with a metal such as zinc, whats released? Where does the product come from? I answered: a gas hydrogen is released and it comes from the bubbles formed when an acid is added to a metal' is the 2nd part of the q correct??

    asked by Jessie
  116. Chemistry

    Suppose you have 1 l of acid solution. With a pH of 2" , you add 1 l of pure water to it, wat happens to the pH of the solution? Explain! Is it correct if i state: the pH of the acid solution becomes neutral since pure water is neutral??

    asked by Jessie
  117. chemistry

    "empirical formulas" combustion of a 0.255g compound conatining only C,H and O, yields 0.561g CO2 and 0.306g H2O. what is the empirical formula of the compound?

    asked by rose
  118. chemistry

    How many atoms are in 10.0 cm3 of mercury (at room temperature)?

    asked by adex
  119. Chemistry

    How much concentrated solution would you take to prepare 2.80L of 0.475M HCl by mixing with water?

    asked by M J
  120. math

    pat has some t-shirts. 1/4 of the t-shirts are pink, 1/2 of the remainder are white and the rest are purple. what fraction of the t-shirts are purple?

    asked by Shohanur
  121. mechanics of materials

    Select the correct answer.The change in length of a steel wire under an applied load can be halved by keeping all other conditions constant but using: A. A different material having a Young's modulus half that of steel B half the cross sectional area of

    asked by dmkp
  122. mechanics of materials

    A metal bar with a cross-sectional area of 50mm2 is subjected to a tensile strain of 0.001. What is the tensile force responsible for the strain given that the material has a Young's modulus of 15GNm raise to the power -2 A 0.003N B 7.5x10 raise to the

    asked by dmkp
  123. physics

    An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C . How far will the electron travel before it stops? How much time will elapse before it returns to its starting point?

    asked by Elmer
  124. science

    What properties did Mendeleyev use to sort the elements in his table?

    asked by teacher1
  125. English

    This is a chemistry lab report, but I was wondering if someone could edit the grammar and look at the sentence structure, etc. I know it's really long and boring, but even if you just look over a bit of it, I would really appreciate it. And I'm assuming

    asked by a Canadian
  126. science

    While rearranging a dorm room a student does 286 J of work to move a desk 1.3 m. What was the magnitude of the applied horizontal force?

    asked by Valerie
  127. Science

    Calculate the power that will pull a mass of 210kg at a constant velocity of 3.9m/s down an inclined plane which makes an angle of 17 degrees with the horizontal.The frictional force is 302N

    asked by Israel
  128. math

    mike drank 3 quarts of juice on monday, 2 pints of juice on tuesday and 1 quart of juice on wednesday. how many pints of juice did he drank on all 3 days

    asked by alexi
  129. American History

    The English civil war affected the american colonies in which of the following ways: a.) With england convulsed in civil war, the mother country for a time failed to provide military protection to the colonies b.) Several colonies began to discuss forming

    asked by MIKE
  130. MAT222 Intermediate algebra

    Solve a^1/2 / a^2

    asked by Anonymous
  131. chemistry

    At standard temperature, a gas has a volume of 312 mL. The temperature is then increased to 115◦C, and the pressure is held constant. What is the new volume? Answer in units of mL

    asked by Anonymous
  132. Physics

    There is a very large horizontal conducting plate in the x−y plane (consider it infinitely large). Its thickness is h. The charge densities on the upper and the lower surfaces are both equal to +σ. What is the magnitude of the electric field? Express

    asked by Anonymous
  133. Math

    A committee, which consists of two mathematicians and three scientists, will be formed from four mathematicians and six scientists. How many possible committees can be formed if : a. any of the mathematicians and scientists are included? b. one particular

    asked by Penelope
  134. Math

    A box of jelly bears contains 52 jelly bears which 19 are white, 10 are brown, 7 are pink, 3 are purple, 5 are yellow, 2 are orange, and 6 are green. In how many ways can you select 9 pieces of candy at random from the box without replacement if 3 white

    asked by Therese
  135. Lang. Arts

    2. Choose the option that corrects the sentence below. If the sentence is correct, select “d. The sentence is correct." Members of the Convention of 1836 a revolutionary group signed the Texas Declaration of Independence. A.Members of the Convention, of

    asked by Cassie
  136. physics

    A cylindrical glass of radius r=3 cm is full of salt water of height h=10 cm with the water's refraction index changing linearly from the bottom n1=1.401 to the top n2=1.400. A flashlight is positioned so that light shines horizontally onto the glass. If

    asked by raj
  137. Life orientation

    Describe the life style disease behaviour and explain 5 factors that constribe to the disease

    asked by Tumelo
  138. science

    __________ do not have tissues and organs A. soft bodied animals b. sponges c. stinging- cell animals is a free-living worm parasitic?? and do tapeworms use food another animal eats???

    asked by Please&ThankYou
  139. math word problems

    This year Jerry is half as old as his dad and 1/3 the age of his grandfather. If the sum of their ages is 132, how old is Jerry?

    asked by reece
  140. math

    what is mental math?

    asked by help
  141. Math plz fast i really need it

    Archie rolls two number cubes each with sides numbered 1 through 6 he then finds the sum of the numbers on the tops of the cubes which two sums have the same probabillity? A. 3 and 4 B. 5 and 9 C. 5 and 8 D. 10 and 12 i need the work involved and i have

    asked by Angel
  142. English

    I am doing a literary research paper on Romeo and Juliet. I don't know a topic. Any suggestions???

    asked by Gabby
  143. Algebra

    (2y-4)/(y-2)

    asked by Rayyan
  144. Finance

    Find the finance charge in the open end charge account. Assume interest calculated is on the unpaid balance of the account Unpaid balance $611.80 Monthly interest rate 1.1%

    asked by Kate
  145. math

    How else can you get ninety hundredths?

    asked by Maria
  146. Grammar

    What kind of clause is the phrase in CAPS? Is that the girl WHOSE FATHER WORKS AT A GARAGE? Any help is appreciated -MC2

    asked by mysterychicken2
  147. Math

    Place the following in ordered from least to greatest: 3/5, 9/12, 6/8, 5/6

    asked by Kim
  148. maths-Surface aea

    if the radii of the circular ends of a conical bucket in the shape of frustum of a cone which is 45cm high are 28cm and 7cm.find the capacity of the bucket in litres

    asked by Anonymous
  149. Math

    Solve the differential equation. Let C represent an arbitrary constant. (Note: In this case, WebAssign expects your answer to have a negative sign in front of the arbitrary C.) (dz)/(dt) + e^(t+z) = 0

    asked by Alli
  150. physics

    Calculate the magnitude of the electric field at one corner of a square 1.48m on a side if the other three corners are occupied by 1.92×10−6 Ccharges.

    asked by Elmer
  151. science

    How many elements are in glucose sugar, C6H12O6? How did you recognize them? a. How many total atoms are there in this equation?

    asked by teacher1
  152. science

    What would be the equation for Drano which is made by combining Sodium Hydroxide NaOH and Water H2O?

    asked by teacher1
  153. HOW CHILDREN LEARN

    According to Jean Piaget, in what is all learning based ON?

    asked by shy
  154. math

    lila did 2 and 3/4 hours of homework on saturday and 3/4 of homework os sunday.what is the time she spent on homework over the weeekend

    asked by Ja'mes
  155. math

    1/4y-8=1/7y solve for y.

    asked by kelly
  156. math

    -5x^2+5y^3 x=-5, y=-3

    asked by kelly
  157. math

    2x^4-11x^3-6x^2+64x+32=0

    asked by craig
  158. Finance

    Bond with $1000 par value and a contract interest rate of 10.8%. Bonds current market rate is $1123 and matures in 10 years. Marginal tax rate is 34%. What is the cost of capital from this bond debt?

    asked by Rob
  159. math

    A jar had 16 marbles 4 are red . One marble is drawn and not replaced. Then s second marble is drawn . What is the probability of selecting a red marble and then another red marble?

    asked by mary jackson
  160. Algebra

    Simplify the radical. Assume that all variables represent positive real numbers. cube root (120m^20 n^2 / mn^14)

    asked by Neil
  161. math

    5/6 - 3/6 =

    asked by Anonymous
  162. Trigonometry

    Verify the identities please. 1.) TAN(X+π)-TAN(π-X)= 2 TAN X 2.) SIN(X+Y)+SIN(X-Y)= 2 SIN X COS Y

    asked by AwesomeGuy
  163. Algebra 2 ..........

    Solve for a and b in y=ab^x.

    asked by Anonymous
  164. maths

    The mass of 42 books is 8,4 kg.what is the mass of 12 of these books.give me an answer in a written ratio

    asked by bamogopa
  165. chemistry

    calculate the percent by mass of solute in solution that contains 3.85 g of calcium chloride in 78.5g of water

    asked by Anonymous
  166. Algebra

    How many ounces of other metal must be added to 56 ounces of pure silver to make a composition that is 70% silver?

    asked by Molly
  167. math

    Assignment 2: Financial Project Due Week 7 and worth 55 points Five (5) years ago, you bought a house for $171,000, with a down payment of $30,000, which meant you took out a loan for $141,000. Your interest rate was 5.75% fixed. You would like to pay more

    asked by Kim
  168. Physics

    Plane flying southwest at 155mi/hr. their is a wind from the west at 45.0mi/hr. what's the planes new velocity

    asked by Dan
  169. Math

    A major corporation is building a 4325 acre complex of homes, offices, stores, schools, and churches in the rural community of Glen Cove. As a result of this development, the planners have estimated that Glen Clove's population (in thousands) t yr from now

    asked by Wynter
  170. Physics

    A non-conducting ring of radius R with a uniform charge density λ and a total charge Q is lying in the yz - plane, as shown in the figure below. Consider a point P, located at a distance x from the center of the ring along its axis of symmetry. 1) What is

    asked by Anonymous
  171. chemistry

    what mass of carbondioxide would be produced if 500g of ethane is used?

    asked by williamz
  172. Physics

    There are two conducting concentric hollow spheres of outer radii R2 and R1 (R2>R1). The thickness of the material of both spheres is d. The inner sphere is negatively charged with charge density −σ1. The larger sphere is positively charged with charge

    asked by Anonymous
  173. english Please check answer

    10. In a research proposal, your sources should not have the potential to answer research questions. A.) true *B.) false Thank You

    asked by Mohammed
  174. economics

    What are the following variables used for in economics: Nominal GDP, Real GDP, GDP Deflator and CPI?

    asked by muselitata
  175. Math

    In selecting an ace, king, queen, and jack from an ordinary deck of 52 cards, how many ways can you choose if the cards must be of different suits? the same suit?

    asked by Therese
  176. math

    Tamar is crating a veritcal bar graph to show how far each of her friends loves from school the data are in the table shown. Friend 1 2 3 4 5 6 7 8 9 10 Distance 7 8 9 9.5 6.5 16 7 7.5 8 10 from school (miles) What numbers are appropriate for Tamar to use

    asked by plz help me !!!!!!!!!!!!!!!!
  177. Physics (Velocity in two dimensions)

    Please help: The displacement vector for a 15.0 second interval of a jet airplane's flight is (3850, −2430) m. (a) What is the magnitude of the average velocity? (b) At what angle, measured from the positive x axis, did the airplane fly during this time

    asked by Kathy
  178. AP Chemistry

    Formal charge: When do you use it? How is it calculated?

    asked by Kenzi
  179. College Physics

    Find the magnitude of the magnetic flux through the floor of a house that measures 21m by 13m . Assume that the Earth's magnetic field at the location of the house has a horizontal component of 2.4×10−5 T pointing north, and a downward vertical

    asked by Cristina
  180. Math

    A college student decides that school work limits him to a total of no more than 36  hours per week at his two part­time jobs. He earns $6 per hour hanging wall paper and 

    asked by T-perry
  181. math

    Miriam orders a shipment of 1500 pounds of ice for her supermarket. The ice comes in individual 5 pound bags that cost Miriam orders$2.50 each. Miriam sells the bags for 30% more than her cost. How much profit, in dollars, will Miriam's supermarket earn

    asked by Jessica
  182. American History

    The English civil war affected the american colonies in which of the following ways: a.) With england convulsed in civil war, the mother country for a time failed to provide military protection to the colonies b.) Several colonies began to discuss forming

    asked by MIKE
  183. physics

    Two protons and two positrons form a square as shown in the figure. All the particles are initially at rest. Due to Coulomb's repulsion, the particles fly off to infinity. Determine the ratio vp/ve where vp and ve are the final velocities of the protons

    asked by raj
  184. physics

    You and a friend are going to a river, where they have a rope swing. Your friend, who has a mass of 60 kg, hops on the end of the rope. You tug horizontally on your friend with a force of 300 N, pulling them back until you can't move them any more. Then

    asked by raj
  185. Calculus

    On what interval is the function f(x)= x^3 - 3x^2 + 7x concave up?

    asked by Terry
  186. mat/116

    Will someone please help me slove this problem? Use the elimination method to solve the system of equations. 5u+2v=-18 3u+v=-5 I have tried to solve this problem several times and have not gotten the correct answer please help. Thank you.

    asked by Sade C
  187. math

    in traveling to Greece, Jim found the exchange rate to be 148 drachma equal to one American dollar. He bought 3 of the same priced items and spent almost 10 American dollars. What was the maximum amount of drachmas for each item?

    asked by reid
  188. chemistry

    how many grams of nitrogen will react with 23 grams of oxygen

    asked by missy
  189. math

    what is the rule for this in/out table? (4,-1), (5.-2), (6,-3), (7,-4) i need help ASAP

    asked by Eve
  190. Algebra

    What are the coordinates of the vertex of the graph of the function y = –x² + 6x –11? A.(3, –2) B.(3, 16) C.(–3, –29) D.(–3, –20) I think it is A. Can you show me your work. I am not positive on the answer..Thanks

    asked by Cassie
  191. Philosophy

    1."Liberals need to understand the global health argument for abortion is deeply offensive. It is like fighting disease by killing everyone who has a disease" This contains: A. euphemism B. dysphemism C. rhetorical definition D. none of the above My answer

    asked by Ashley
  192. stats

    in a battleground state 60 percent of all voters are republican. assuming there are only 2 parties, democrat and republican, if 2 voters are randomly selected for a telephone survey what is the probability that one is a republican followed by a democrat.

    asked by yvette
  193. algebra

    what is an equation of a parobola with the given vertex and focus? vertex(5,4) and focus(8,4) Can someone show me the steps to get the equation please?

    asked by lee
  194. algebra

    How many rational numbers are there between 0 and 1? jusify your answer.

    asked by michael
  195. chemistry

    Calculate the atomic weight (in amu) of an element (X) given the following data: : 24.000 amu at 0.7870 fractional abundance : 26.000 amu at 0.1017 fractional abundance : 25.000 amu at 0.1113 fractional abundance

    asked by adex
  196. ELA

    What is the opposite of extend?

    asked by Anonymous
  197. chemistry

    "empirical formulas" p 889(153e)

    asked by rose
  198. physics

    what is the height of the ball if the bottom of the swing is zero, speed is 2.8m/sec, 9.81 acceleration of gravity

    asked by emily
  199. Science

    Which of the following bonds is polar? A.F—F B.O—H C.O—O D.H—H I think it is B...?

    asked by Cassie
  200. Math

    The eggplant ave. bus passes max's house every 8 mins. the cabb creek bus passes it every 12 mins. the last they passed by together was at 9:00 am. when will it happen again

    asked by George
  201. calculus

    y= (x^3 - 2sqrx)/(x) y'=

    asked by Debbie
  202. Psychology/Biology Help!!

    1) What memory system is sensation responsible for? Sensory, short term or long term memory system? Explain. 2) How does encoding memories relate to transfer appropriate processing and fluid intelligence?

    asked by Jasmine
  203. mechanics of materials

    an aluminium alloy bar with a Young's modulus of 70GPa is under a tensile stress of 10MPa, Which of thefollowing is the equal to the strain in the bar? A 0.0014 B 7.0x10raise to the power3 c 700 D 1.4x10 raise to the power -4

    asked by dmkp
  204. science

    what other adaptations might contribute to the bat's success as a predator

    asked by Tmarrie
  205. Marketing

    What are the strategies for entering into the global market? What are some strengths and limitations?. Do you know a company who has done well in a global economy?

    asked by Tameika
  206. Math

    How to compare 7/9 7/8 6/7

    asked by Trent
  207. Math

    4 6/10 - 3 3/4

    asked by Kim
  208. Geometry

    What is the shortest distance from the point (2,1) to the line x-y= -1

    asked by Hafzah
  209. Math- geometry

    Angles in a circle. Is the angle in the center equal to any other angle on the sides or top?

    asked by Mia
  210. Math

    A car rental agency charges $120 per week plus $.12 per mile driven. How many miles did you drive if the total charge is $162?

    asked by Anonymous
  211. physics

    An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C .

    asked by Elmer
  212. landmarks

    I need 12 numbers that have 28 minimum 34 maximum 30 median 29 mode

    asked by kaibai
  213. math

    A car rental company charges $280 per week plus $0.18 per mile to rent a car. How many miles can you travel in one week for $433? A) Write an equation you can use to answer this question. Be sure all the numbers given above appear in your equation. Use x

    asked by kelly
  214. math

    14x=5 solve for x

    asked by kelly
  215. books

    How do i do a book summary?

    asked by bianca
  216. math

    1/3x+1/4=5 solve .

    asked by kelly
  217. math

    5/6x-1=-6 solve for x.

    asked by kelly
  218. English help ASAP

    Which of the sentences below is punctuated correctly? (1 point )I opened the door and my cat ran outside. I opened the door, and my cat ran outside. I opened the door, my cat ran outside. i think its 2

    asked by alex
  219. math

    1/3y-9=1/10y solve for y.

    asked by kelly
  220. Math

    can someone explain restrictions on a variable i have an equation divide (x^3+5x-18) by (x-2) it got x^2+3 with a remanider of 12 is this correct and what is the restrcition on the varible?

    asked by Tara
  221. math $$

    ty sooooo much another question (sorry about all these just trying to get this done and learn it before tom.) Jennie calculated the probabilities of various events involving a coin. What is the probability of a coin landing on heads at least twice when the

    asked by Angie
  222. Math

    can someone explain restrictions on a variable i have an equation divide (x^3+5x-18) by (x-2) it got x^2+3 with a remanider of 12 is this correct and what is the restrcition on the varible?

    asked by Tara
  223. math

    Kyle spent 26% of his tax refund on new pair of skis. His skis cost $350. How much was his refund?

    asked by Tammy
  224. math

    A trapezoid has an area of one and a perimeter of five. If this pattern continues, what is the perimeter of a large trapezoid with an area of 96

    asked by x
  225. science

    What do all the elements in Group 8 have in common?

    asked by teacher1
  226. science

    what is so special about the elements in Group 8 on the Periodic table?

    asked by teacher1
  227. PreCalculus

    Write the equation 5x – 4y = –7 in polar form.

    asked by Bonqui'sha
  228. math

    The scale factor between figure A and figure B is zero point two five. If one side length of figure B is fifty-six yards, what is the corresponding side length of figure A?

    asked by kelby
  229. math

    if there were 97 marbles and 5 were back what percent would that be?

    asked by christi
  230. Grammar

    How is the CAP'S noun clause used in this sentence? What I want to know is HOW ARE WE GOING TO PAY FOR THIS. A. Subject B. Direct Object C. Object of a Preposition D. Predicate Nominative

    asked by mysterychicken2
  231. physics

    An electron with initial speed = 2.54×10^7 m/s is traveling parallel to an electric field of magnitude = 1.66×10^4 N/C . How much time will elapse before it returns to its starting point?

    asked by Steve
  232. statistics

    what is percentage of scores between37.5 and 39

    asked by donna hull
  233. Science

    Why not chicken lay eggs during nitht time? I want detail explanation.

    asked by Mengistu
  234. Grammar

    How is the CAP'S noun clause used in this sentence? What I want to know is HOW ARE WE GOING TO PAY FOR THIS. A. Subject B. Direct Object C. Object of a Preposition D. Predicate Nominative

    asked by mysterychicken2
  235. Math

    i have problems with understand what they are asking in a word problem it goes like this one jar holds 4mls more than twice. The two jars together hold the volume of the other jar. both jars together hold 712ml what is the volume the smallest jar hold.

    asked by Tara
  236. Math

    i have problems with understand what they are asking in a word problem it goes like this one jar holds 4mls more than twice. The two jars together hold the volume of the other jar. both jars together hold 712ml what is the volume the smallest jar hold.

    asked by Tara
  237. science

    While rearranging a dorm room, a student does 286 J of work in moving a desk 1.3 m. What was the magnitude of the applied horizontal force?

    asked by Valerie
  238. Science

    Explain how atoms and elements differ from one another.

    asked by Anonymous
  239. science

    why do rubber tires deteriorate more rapidly in polluted areas than in the countryside

    asked by Anonymous
  240. pre-algebra

    what is the mode for this set of numbers97,86,93,56,34,39,47,62,88,54,81

    asked by hunter
  241. Math

    how to solve 5x (8 + 2) + 3 = 24 what is x?

    asked by Anonymous
  242. chemistry

    difference between solution and pure substance

    asked by Anonymous
  243. math

    Tamar is crating a veritcal bar graph to show how far each of her friends loves from school the data are in the table shown. Friend 1 2 3 4 5 6 7 8 9 10 Distance 7 8 9 9.5 6.5 16 7 7.5 8 10 from school (miles) What numbers are appropriate for Tamar to use

    asked by I NEED HELP!
  244. Math

    Find the dy/dx for each equation a) y=ln(2x^6-15) b) y= 3√2x^2-3x-1/5 c) y=x^4/x^2+1

    asked by Paul
  245. social studies

    5 causes and effects on the civil rights movement.

    asked by Anonymous
  246. math question

    Why is 6/8 not equivalent to 18/32 ??

    asked by bobby
  247. math

    begin at the lookout tower travel east 7 units and north 4 units where are you

    asked by hailey
  248. Chemistry

    How many grams of CS2(g) can be prepared by heating 12.9 moles of S2(g) with excess carbon in a 7.00 L reaction vessel held at 900 K until equilibrium is attained? Stoichiometry is 1 to 1

    asked by Moni
  249. chemistry

    how many c atoms are contained in 15.63g of c5h12??

    asked by rose
  250. math

    75% of teenagers own cell phones and ofthose who own cell phones, 87% use text messaging. 1. What % of teens own cell phones AND text? 2. Among those who own cell phones and text, 15% send more than 200 texts a day, or more than 6,000 texts a month. What %

    asked by help please
  251. Chemistry

    20cm3 of 0.500moldm-3 H2SO4 was consumed to neutralize 50cm3 of 0.400moldm-3 NaOH. The temperature of the system is increased by 36 degree C. The heat capacity of the calorie meter was 39 JK-1, and the heat capacity of the solution is 4.2JK-1. Find the

    asked by Emma
  252. accounting

    Write a 3-4 Page Paper That Summarizes Your Findings From The Four Scenarios As Well As How Using Microsoft Excel Helped You With This Process

    asked by Anonymous
  253. CONTACTS,CONFLICTS,AND THE CRUCIBLE

    please help me thank you. What was the main reason for the isolation of Japan?. A. Domination by Chinese culture B. Difficult navigation in surrounding seas C. Weak rulers D. Lack of education

    asked by szk
  254. math

    -x squared -2x +4 solve quadratic equation by factoring

    asked by michell
  255. art

    visual art, what do i write for a 4 page paper on explaining the principle of design

    asked by jazzi
  256. Math

    3√(x)ln(x)

    asked by jonh
  257. Chemistry

    20cm3 of 0.500moldm-3 H2SO4 was consumed to neutralize 50cm3 of 0.400moldm-3 NaOH. The temperature of the system is increased by 36 degree C. The heat capacity of the calorie meter was 39 JK-1, and the heat capacityof the solution is 4.2JK-1. Find the

    asked by Emma
  258. physics

    When two objects move uniformly toward each other, they get 3.0 m closer each second, and when they move uniformly in the same direction with their original speeds, they get 1.0 m closer each 17 seconds. What is the speed (in meters/second) of the faster

    asked by Cristian
  259. algebra

    x-9+-6x+5 A. 14 B. 7 C. 2 D. 21 thanks for your help

    asked by marcela
  260. Play

    In the play Piano Lesson, why does Berniece finally play the piano.

    asked by Anonymous
  261. Algebra

    How many ounces of other metal must be added to 56 ounces of pure silver to make a composition that is 70% silver? Please help me set this problem up

    asked by I need help
  262. Physics

    A charge −Q is located at x=−l/2 and a charge +Q is located at x=l/2. Thus the separation between the two charges is l. (b)What is E(x) as a function of x for x>l/2? Express your answer in terms of, if necessary, Q, l, x and the constant ϵ0 (if

    asked by Anonymous
  263. US HSITORY

    HOW DID MEXICAN INDEPENDENCE CHANGE TEXAS

    asked by jj
  264. MATH

    Tamar is crating a veritcal bar graph to show how far each of her friends loves from school the data are in the table shown. Friend 1 2 3 4 5 6 7 8 9 10 Distance 7 8 9 9.5 6.5 16 7 7.5 8 10 from school (miles) What numbers are appropriate for Tamar to use

    asked by I NEED HELP!
  265. US HISTORY

    WHAT PROBLEMS DID THE AMERICANS AND THE MEXICANS HAVE WITH EACH OTHER IN TEXAS

    asked by jj
  266. US HISTORY

    WHAT HAPPENED AT THE CVITY OF GONZALES

    asked by jj
  267. algebra 2

    Can you find the error for me in this equation, find the explicit formula, evaluate the formula for n? I think the error is in the a2-a1 formula.and the -62.50. I know the pattern is 62.50 paid per month. Your uncle loaned you some money and did not charge

    asked by Lea
  268. Math - graphing

    i am having trouble with a graphing calculator please help with these two questions 1. a census was taken from 2012 to 2020. the data collected is given in the following table. 2012-2020 L1 l2 0 6000 1 6300 2 6615 3 7012 4 7362 5 7878 6 8429 7 9272 8 10199

    asked by Tara
  269. Lang. Arts

    Which of the following groups of words in bold is nonrestrictive and should therefore be set off with commas in the sentence? A.My yarn which is blue and gray will make a very pretty scarf. B.Hats knitted by my mother are worn all winter by my family.

    asked by Cassie
  270. Lang. Arts

    Read the following excerpt from Sky: We finally reached Enkhuizen, an ancient harbor town, where the brisk wind from the sea was blowing so hard that we had to hold on to hats, skirts, and scarves. We walked with farmers and their families to the ferry

    asked by Cassie
  271. math

    0.5, 3/5, 1 3/4, 0.9 in order from least to greatest

    asked by Jake
  272. Math

    F(x)3√(x)ln(x) find the F'=

    asked by jonh
  273. Chemistry

    20cm3 of 0.500moldm-3 H2SO4 was consumed to neutralize 50cm3 of 0.400moldm-3 NaOH. The temperature of the system is increased by 36 degree C. The heat capacity of the calorie meter was 39 JK-1, and the heat capacityof the solution is 4.2JK-1. Find the

    asked by Emma
  274. Chemistry

    NH4NO3 is frequently used as a fertilizer and in explosive compounds dlta Hf values of this compound nd H20 are -365kJmol-1 and -286kJmol-1 respectively. Calculate the amount of heat released bye the dissociation of 1mol of NH4NO3 according to the

    asked by Emma
  275. Chemistry

    The \rm p \it K_{\rm a} of this reaction is 4.2. In a 0.74\it M solution of benzoic acid, what percentage of the molecules are ionized?

    asked by Joe
  276. AP Chemistry

    Formal charge: When do you use it? How is it calculated?

    asked by Kenzi
  277. life orientant

    Discuss5 ways in which the teenage pregnapregnancy prblem impacts on the comcommunity.provide relevant sources to. Support your claims

    asked by judy
  278. math

    name a figure that has an area of 47 centimeters square

    asked by Gabrielle
  279. trig

    If cot x = .78, what is tan x?

    asked by m
  280. analytical chemistry

    fundamental SI units of: - a distance of exactly 26 miles - an area of 1.0 square root -the volume of a sphere of radius 1.40 picometers -a density of 38. tons per cubic furlong

    asked by holly
  281. math

    Hello! I am confused on how to do this math problem. Can you please help me or explain how you get this answer please? Miriam orders a shipment of 1, 500 pounds of ice for her supermarket. The ice comes in individual 5-pound bags that cost Miriam

    asked by Megan
  282. math

    frank cut a pie into 10 equal slices. There are only 3 slices left. what is the measure of the angle for 3 slices that are left?

    asked by Melisa
  283. maths

    What is the total area bounded by the curve y^2(1-x) = x^2(1+x) and the line x = 1

    asked by Anonymous
  284. chemistry

    why is the graph of the meliting points of hydrocarbons not consistent?

    asked by aishwarya
  285. math

    the product of 237 and 13

    asked by Michele
  286. Math

    Find the simple rate Principal $2400 Rate 10 1/2% Time in years 1 1/2

    asked by Muffin
  287. biology help?

    We anticipate the evidence gathered by you will indicate that three of the five species are in greater need of prioritising for conservation compared with the other two. You should start your account by very briefly explaining why these two species were

    asked by centya
  288. english

    Identify the correct sentence. a) Georgia wanted only to be loved, Dante wanted only to love her. b) Georgia wanted only to be loved and Dante wanted only to love her. c) Georgia wanted only to be loved Dante wanted only to love her. d) Georgia wanted only

    asked by Ann
  289. Calculus

    R(x)= sqr5/x^6 R'(x)

    asked by Katy
  290. Life orietation

    Provide five ways in whch you critically discuss how life style behaviour disease impact on the teenage

    asked by Tumelo
  291. math

    Increase 120kg by 20%

    asked by Gontse
  292. MATH

    Y^3+Y^2-4Y-4 AND T^2+4Z^2 THESE ARE FACTORING QUESTIONS CAN SOME ONE PLEASE SHOW ME THE STEP ON HOW TO SOLVE THESE TWO PROBLEMS

    asked by mace
  293. English 4U

    I need help coming up with a deductive syllogism (general to specific) The conclusion is: Therefore, driving age must be raised. I need a major and a minor premise for it...

    asked by Jeevika
  294. SI Units

    fundamental SI units of: - a distance of exactly 26 miles - an area of 1.0 square root -the volume of a sphere of radius 1.40 picometers -a density of 38. tons per cubic furlong

    asked by holly
  295. Math Gr.12 (Calculus)

    How do i do this? 3= 6x^2 - 2x -8

    asked by Bob
  296. Chemistry :) simple question

    When an acid reacts with a metal such as zinc, whats released? Where does the product come from? I answered: a gas hydrogen is released and it comes from the bubbles formed when an acid is added to a metal' is the 2nd part of the q correct??

    asked by Jessie
  297. Calculus

    On what values of x does the graph of f(x) = 2x^3 - 3x^2 + 12x + 87 have a horizontal tangent?

    asked by Gary
  298. Math

    7y

    asked by T-perry
  299. Chemistry

    I had a quiz today and one of the multiple choice questions was something like, "find the final temperature of aluminum when it is cooled" and then it gave you the specific heat capacity of aluminum, the mass of the aluminum, initial temperature, and

    asked by a Canadian
  300. chemistry

    Calculate the amount of zirconium produced (in kg) if a reactor were charged with 261.0 kg ZrCl4 and 25.0 kg Na .

    asked by mariam
  301. algebra

    How many rational numbers are there between 0 and 1?

    asked by michael
  302. Math

    So, if Tyler has to earn $50.00 in two weeks for a gift to a friend and has already earned $18.42 so far, what equation would you use to figure out how much more money he has to earn each week?

    asked by Sarah
  303. algebra

    i am having trouble understaing how to write these out in simplest form please help a. 7^3x7^2x8^5/ 8^4x7x8^-7 for this i got 7/8 b. (a^-2b^4c^3)2 can you explain and show me how to do this?

    asked by Tara