Questions Asked on
January 16, 2013

  1. Math

    Which of the following statements is not true regarding operations with exponents? A.)To divide powers with the same base, subtract the exponents. B.)To subtract powers with the same base, divide the exponents. C.)To multiply powers with the same base, add

    asked by Deborah
  2. chemistry

    What has the higher normal melting point: CHI3 or CHF3? The answer in the book is CHI3. So I'm assuming the answer is CHI3 because Iodine is the bigger and will form larger london dispersion forces, but isn't a stronger dipole moment formed in CHF3 because

    asked by Bill
  3. trig

    Use a table of trigonometric values to find the angle θ in the right triangle in the following problem. Round to the nearest degree, if necessary. cos θ = 0.9659 A = ? H = 20

    asked by ab
  4. maths-urgently needed

    The volume of a cylinder is 48.125 cm3, which is formed by rolling a rectangular paper sheet along the length of the paper. If cuboidal box (without any lid i.e., open at the top) is made from the same sheet of paper by cutting out the square of side 0.5

    asked by Anonymous
  5. math

    In the diagram, transversal GH intersects parallel lines AB amd CD. m

    asked by me
  6. Science

    State in words the specific information conveyed by a label reading 0.25M Oxalic acid.

    asked by Gloria
  7. economics

    Kimberly works for a well known financial company as a sales representative. She earns a small base salary but receives commission off every product she sells. Kimberly has basic living expenses in addition to a student loan. She wants to start adding to

    asked by john
  8. HOMEWORK

    Choose two authors from the early American and Colonial period. Identify what they wrote and, in one to three paragraphs, compare their purpose, audience, and style. (25 points

    asked by Anonymous
  9. Chemistry

    Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol. I used this equation: density = (2)*(atomic weight) / (volume of unit cell)*(Avagodro's #) rearranged to find

    asked by Kyle
  10. Design

    Which design style encourages a complete manipulation of floral materials into unnatural geometric shapes and colors? A. Abstract B. New convention C. Ikebana D. New wave im thinking B

    asked by Jamie
  11. Math

    A fraction reduces to 36. If its denominator is 6x5, what is its numerator? A.)63x B.)63x5 C.)6x5 D.)67x5 I think the answer is B. Thank You.

    asked by Deborah
  12. math

    A set has 256 subsets how many element has the set?

    asked by Boris
  13. Design

    What is the difference between the vegetative style and the landscape style of flower arranging? A. Vegetative arrangements group same-season flowers together, while landscape arrangements don't. B. The vegetative style features flowers as they're found in

    asked by Jamie
  14. Physics

    suppose that two point charges each with a charge of +1 coulomb are separated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them

    asked by Quinn
  15. Algebra

    A baseball player's batting average is the number of hits the player has divided by the number of at-bats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 at-bats, and his batting average

    asked by Amie
  16. Math

    If a wheel turning at a constant rate completes 100 revolutions in 10 sec what is its angular speed?

    asked by Anonymous
  17. nutrition and wellness

    Write a 300-500 word essay. Provide Three examples of sporting events, or fitness activities, with which you have been involved. Describe what energy pathway was used in that sport or activity and explain why you are matching the pathway with the activity.

    asked by jay BIRD
  18. Physics

    An 81 kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is .49. a) what is the magnitude of the frictional force? b) If the player comes to a rest after 1/6s, what was his initial velocity?

    asked by Anonymous
  19. English

    Hi, I have a english exam coming up on poetry and Hamlet... the first part is Part A ;Passage Analysis: Choose only three of the following passages from the play Hamlet to comment on. Each response should be concise and well written in full sentences...so

    asked by Satrianna
  20. Chemistry

    A steel tank at 300 K contains 0.285 L of gas at 1.92 atm pressure. The tank is capable of withstanding a maximum pressure of 5.76 atm. Assuming that doubling the kelvin temperature causes the internal pressure to double, a. at what temperature will the

    asked by Sara
  21. 6th grade Math

    I'm having trouble determining the range movie tickets sold by looking at a histogram. I know you normally take the highest value represented and subtract the lowest value from it to get the range. However, when you have a histograme and the data set is

    asked by Brandi
  22. Math

    The amount of money Kylie spends on food to the amount she spends on gas per week is 7:4. She spends $45 more on food than gas. How much does she spend on food? How much does she send on gas? On one of the weeks, she spends an additional $75 on food for a

    asked by Jillian
  23. Chemistry

    Calculate the radius of a vanadium atom, given that V has a BCC crystal structure, a density of 5.96 g/cm3, and an atomic weight of 50.9 g/mol. I used this equation: density = (2)*(atomic weight) / (volume of unit cell)*(Avagodro's #) rearranged to find

    asked by Kyle
  24. Design

    What is the difference between layering and terracing? A. More depth can be achieved with layering than with terracing. B. In layering, the materials are more three-dimensional than in terracing. C. In layering, materials such as leaves can't be reversed

    asked by Jamie
  25. MATH

    A box contains 6 red pencils and 8 black pencils. what fraction of thr pencils are red?

    asked by RYAN
  26. English

    Which of the following is equivalent to x^5 y^2/xy^2 when =/ 0 and y =/ 0 ? (1 point) A.) X^6 Y^5 B.) X^5 Y C.) X^4 Y D.) X^4 I don't even have a good guess. Thank you.

    asked by Deborah
  27. astronomy

    If we represent the sun as volleyball (diameter =65cm)how far away would be find earth in this model? Note the suns actual diameter is 1.4x10^9 meters.

    asked by kristy
  28. CALC (PLEASE HELP DUE SOON)

    Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim f(x) as x approaches 3, where f(x)= x^2-8x+9 if x/3 (greater than or equal to 3)

    asked by Amela
  29. Physics

    A ladder 20m long rest against a vertical wall so that the foot of the ladder is 9m long. Find correct to the nearest degree the angle that the ladder makes with the wall.

    asked by Jeremiah
  30. math

    Jeremy collected nickels for one week. He is making stacks of his nickels to determine how many he has. The thickness of one nickel is 1/4 in. How tall is a stack of 4 nickels? 3 nickels, 2 nickels?

    asked by Jade
  31. math helpp

    8. Convert the scale to a unit rate. Show your work. Interpret the meaning of the unit rate.

    asked by tesj
  32. maths-urgent

    Arjun spent Rs.12 to purchase some pens and pencils.The cost of a pen and pencil are in the ratio 3:2. the total cost of a pen and a pencil is Rs. 3. if the total number of pens and pencils he purchased is7, find the number of pens he purchased.

    asked by Anonymous
  33. Math plz HELP!

    At 7pm the temperature outside was -5 celsius. What does -5 represent in this situation? A. The change in temperature the last hour B. The number of degrees between 0 Celsius and -5 celsius. C. The temperature at 7pm D. The number of hours when the temp

    asked by T.J And the Vibe
  34. astronomy

    a remote internet webpage may sometimes reach your computer by going through a geostationary satellite orbiting approx. 3.6x10^7m above earths surface. What is the minimum delay in seconds that the webpage takes to reach your computer.

    asked by kristy
  35. Physics

    A 12000 kg airplane launched by a catapult from an aircraft carrier is accelerated from 0 to 200 km/h in 3 s. (a) How many times the acceleration due to gravity is the airplane's acceleration? (b) What is the average force the catapult exerts on the

    asked by Jan
  36. analytical geometry

    if (l1,m1,n1),(l2,m2,n2),(l3,m3,n3) are the direction cosines of three mutual perpendicular lines,show that the line whose direction ratios area l1+l2+l3,m1+m2+m3,n1+n2+n3 make equal angles with them

    asked by manjula
  37. chemistry

    Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.

    asked by Anonymous
  38. chemistry

    Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.

    asked by Anonymous
  39. Physics

    A boy on a 2.4 kg skateboard initially at rest tosses a(n) 8.2 kg jug of water in the forward direction. If the jug has a speed of 3.0 m/s relative to the ground and the boy and skateboard move in the opposite direction at 0.57 m/s, find the boy’s mass.

    asked by Cesar
  40. Physics

    Suppose you pour water into a container until it reaches a depth of 12 cm. Next, you pour in a 25-cm-thick layer of oil so that it floats on top of the water. The density of the oil is 0.92 g/cm3 and that of water is 1.00 g/cm3. What is the pressure at the

    asked by Alphonse
  41. Chemistry;HELP

    Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------ Volume v Adjust the density formula and solve the problems below: m D =

    asked by Victoria
  42. Physics

    A ladder 20m long rest against a vertical wall so that the foot of the ladder is 9m long. Find correct to the nearest degree the angle that the ladder makes with the wall.

    asked by Jeremiah
  43. research

    A quantitative analysis method which aggregates a number of (similar) individual studies into a large data set from which to compute an over all “effect size” (based on similar study procedures and treatments) is commonly known as…?

    asked by helga
  44. Design

    _______ refers to the process of tying materials together to hold them in place in an arrangement. A. Binding B. Clustering C. Banding D. Grouping

    asked by Jamie
  45. Economics

    Owners of digital cameras have to buy memory cards in order to use the cameras. Cameras and memory cards are: A. substitutes. B. complements C. unrelated. D. elastic.

    asked by Mari
  46. Visual Basic (Computer Programming)

    ALGORITHM EXERCISES 1. Wilma Peterson is paid by the hour. She would like a program that both calculates and displays her weekly gross pay. For this exercise, you do not need to worry about overtime pay, as Wilma never works more than 40 hours in a week.

    asked by Erick
  47. math

    A 20-ft by 40-ft swimming pool is surrounded by a deck d feet wide. What is the area of the deck?

    asked by tishondra
  48. math

    Rachel is curious about the number of pets that people own. She surveyed her 20 classmates, asking them exactly how many pets they own. Rachel's data is shown below: Number of Pets 0 Pets 1 Pet 2 Pets 3 Pets Number of Classmates 9 6 1 4 What is the mean

    asked by Kingbla
  49. Chemistry

    At room temperature, ethanol's density is 0.789 g/mL while water's density is 0.997 g/mL. When a few milliliters of ethanol are added to water, the two liquids mix. A student is given a unknown liquid at room temperature and experimentally determines its

    asked by John
  50. word problems

    harris is planting a rectangular garden with an area of 24 square. he is also putting a fence around his garden. how should he arrange his garden so he can buy the least amount of fence possible?

    asked by julian
  51. 8th grade math

    A model car is a 1/43 scale model of the original car. What is the scale factor needed to find the dimensions of the original car? model car=4.2" long, 1.3"tall, and 1.6" wide?

    asked by Kory
  52. math

    Why is 2482 not a reasonable answer for 542x6

    asked by esha
  53. Chemistry

    What mass of CH4 is contained in a 443 mL sample of CH4 at −32◦C and 282 torr? Answer in units of g. I tried so many times and I don't get it!

    asked by Maddie
  54. math

    the difference of y and 3 amounts to 12. Write each sentence as an equation

    asked by vic
  55. social studies

    i need help!!!!! one type of lightning bug glows once every 1 1/2 seconds. how many times can it glow in 1 minute? and the other one is : Bea can run 1/6 mile in 2 minutes. how long should it take her to run 2 miles? please help the teacher wont help me

    asked by gaby
  56. s.s

    4. How did the United States change as it became more economically independent? (Select TWO correct responses.) Population decreased as trade with other nations was stifled. The growth of factories and trade led to the growth of American cities. Congress

    asked by Anonymous
  57. Geometry

    Is it possible for a cross section of a cube to these shapes.... -pentagon -isosceles triangle -scalene triangle ..... If so, please describe how the plane intersects the cube. Thanks!!!!

    asked by Bridgett
  58. physics

    An observer rides with a moving sound source directly toward a large vertical wall. The vehicle has a constant speed of 10m/s and the source has a frequency of 150Hz. What beat frequency is heard by the observer as a result of the combination of the direct

    asked by Offiong
  59. Math

    Annie likes to walk 2 steps, jump 2 steps and then skip 2 steps. If she does this pattern over and over again for a total of 52 steps, how many jumping steps will she make?

    asked by Reece
  60. Algebra

    A gardener combines x fluid ounces of a 20% liquid fertilizer and 80% water mix with y fluid ounces of a 5% liquid fertilizer and 95% water mix to make 30 fluid ounces of a 10% liquid fertilizer and 90% water mix. a. Write a system of linear equations that

    asked by Amie
  61. astronomy

    if the earths orbit is 1.5x10^8km, determine how fast earth moves along its orbit assume there are 365 days in a year. remember the circumference of a circle is equal to 2pi where r is the radius.

    asked by kristy
  62. Geometry

    a cat is stuck 15 feet up in a tree.to get it down,you will place a ladder 5 feet from the base of the tree.how tall must your ladder be in order to reach the cat? Round to the nearest foot

    asked by Lessley
  63. chemistry

    Calculate the molarity of a solution made by dissolving 12.5 grams of Na2CrO4 in enough water to form exactly 550 mL of solution.

    asked by Anonymous
  64. analytical geometry

    show that the locus of a point whose distances from two given planes are in a constant ratio, is a plane.

    asked by manjula
  65. Physics

    A 0.055 kg golf ball leaves the tee at 50 m/s. what is its change in momentum (impulse) ?

    asked by Taylor
  66. physics

    A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a

    asked by Cass
  67. Physics

    suppose that two point charges each with a charge of +1 coulomb are separated by a distance of 1 meter will they attract or repel ? determine the magnitude of the electrical force between them

    asked by Anonymous
  68. physics

    a body of mass 5kg initially at rest is subjected to a force of 20N. find the kinetic energy acquired by the body at the end of 10s.

    asked by prudhvi
  69. Chemistry

    explain why a sealed bag of potato chips "puffs out" (increases in volume) if taken from sea level to a high mountain pass. I know this has to do with pressure.. so is it because the higher up you go, the less pressure there is? Thanks!

    asked by Sara
  70. physics

    A 91.0 N grocery cart is pushed 17.1 m along an aisle by a shopper who exerts a constant horizontal force of 42.0 N. The acceleration of gravity is 9.81 m/s2 . If all frictional forces are neglected and the cart starts from rest, what is the grocery

    asked by k
  71. English

    Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans to apply at similar stores in your town. But you also know she is a perfect

    asked by Evelyn
  72. Algebra

    The length of a rectangle is 5 inches greater than the width. The sum of the length and width is 41 inches. Find the length and width of the rectangle.

    asked by Anonymous
  73. reading

    from this pragrap what relationship can youinfar between the jogger and the writer

    asked by sazu
  74. Spanish.

    Help answer please? ¿Qué animal fue importante para el éxito de los conquistadores? ¿Cuál país conquistó Hernán Cortés? ¿Cómo se llama el conquistador de Perú?

    asked by Victoria
  75. College Trigonometry

    From a point 200 yards from the foot of a building, the angle of elevation to the top of the building is 37 degrees. Find the measure of the angles of the triangle formed by the building, the ground, and the line of sight to the top of the building?

    asked by Marie
  76. economics

    How does a budget differ when you have an irregular income vs. a predictable income? irregular income is monthly budget.

    asked by john
  77. maths

    A statistician wants to estimate the mean weekly family expenditure on clothes. He believes that the standard deviation of the weekly expenditure is $125. Determine with 99% confidence the number of families that must be sampled to estimate the mean weekly

    asked by sarah
  78. english composition

    quote or paraphase. Examples and explain your answers

    asked by rosetta shaw
  79. physics

    two forces 20N each are inclined at 100 degree to each other.find the single force that will; replace the given force system balance the given force system

    asked by rezny
  80. algebra

    Parking in a student cost $3 for the first half hour and $1.50 for each hour thereafter. A partial hour is charged the same as a full hour. What is the longest time that a student can park in this lot for $9?

    asked by luis barreto
  81. chem

    When saccharin is added to pure water, the freezing point of the resulting solution drops to -5.0C, Calculate the freezing point depression of the aqueous saccharin solution. Note: freezing point of pure water is O.0C... Stuck thanks so much!

    asked by Lala
  82. Math

    Calculate the limit: lim(((arccos x)^(n+1))/((arccos x)^n) with x tends to 1-, for every n that belongs to N, and then prove that lim(((arccos x)^n)/(arccos x))=sprt(n).

    asked by Zisis
  83. Mechanics & hydromechanics

    Three forces pulling on a body are in equilibrium. The direction of one is due south, the direction of another is 80 degrees east of north, and the third force acts in the direction of 35 degrees west of north. If the magnitude of southerly force is 38 N,

    asked by joe
  84. Chemistry;HELP

    Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------- Volume v Adjust the density formula and solve the problems below: m D =

    asked by Victoria
  85. Pre-Algebra

    The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation

    asked by Anonymous
  86. analytical geometry

    show that the locus of a point whose distances from two given planes are in a constant ratio, is a plane.

    asked by manjula
  87. aig math

    Fill in the missing sign to make the equation true. 125 _ 5 _ 12 _ 2 = 1

    asked by May
  88. math

    the quotient of four and the sum of a number and one. Use x to represent each unknown number

    asked by vic
  89. math

    in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related.

    asked by skylar
  90. Chemistry

    A steel tank at 300 K contains 0.285 L of gas at 1.92 atm pressure. The tank is capable of withstanding a maximum pressure of 5.76 atm. Assuming that doubling the kelvin temperature causes the internal pressure to double, a. at what temperature will the

    asked by Sara
  91. physics

    Consider two vectors where F1 = 53 N, F2 = 81 N, 1 = 320 , and 2 = 13 ,measured from the positive x axis with the counter-clockwise. What is the magnitude of the resulting vector?

    asked by sarah
  92. math

    which 1 of the following is a true proprotion A. 7:9=8:9 B.2:1=1:2 C.54:9=6:3 od D.3:4=9:12 please answer

    asked by brooklyn
  93. Math please help ms sue

    The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation

    asked by Anonymous
  94. Algebra

    The length of a rectangle is 5 inches greater than the width. The sum of the length and width is 41 inches. Find the length and width of the rectangle.

    asked by Anonymous
  95. math

    Aliquot divisors are all the divisors of a number except the number itself. The product of the Aliquot divisors of a number is somtimes equal to the square of the number. The Aliquot divisors of of 12 are 1 ,2 ,3 ,4 ,6. Their product,1x2x3x4x6=144=12*2 is

    asked by Jeff
  96. math

    express 16^21/2^7 - 5^12 in simplest fotm

    asked by teresa
  97. Chemistry

    Solid magnesium reacts with oxygen gas to produce 568g of solid magnesium oxide.

    asked by Emmaly
  98. 8th grade Math

    kimberly used coupons worth $1.00 off and $1.25 off and two coupons for $1.50 off. if the discount of each of these coupons were doubled, how much would kimberly save?

    asked by Rubby
  99. English

    You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and tells you to bring with you a polished piece of writing for them to evaluate your writing skills. The paragraph must describe one

    asked by Evelyn
  100. chem. quick help

    Ni(OH)2(s) + H2SO4 = 2H2O + NiSO4 so i balance this problem but I don't know the states of matter except the first one

    asked by thad
  101. Mechanics & hydromechanics

    Where a 1208 N weight must be hung on a uniform 214 m pole so that a boy at one end supports one-third as much as a man at the other end.

    asked by joe
  102. math

    Annie likes to walk 2 steps, jump 2 steps and then skip 2 steps. If she does this pattern over and over again for a total of 52 steps, how many jumping steps will she make?

    asked by Anonymous
  103. Math Help!!

    Bottom part of a greenhouse frame has a length of 350 cm width of 220 cm and a height of 250 cm. Angle at the peak of the roof measures 90 degrees. Sketch the frame and label it with its actual dimensions. Use a scale of 1:25 to calculate the measurements

    asked by Anonymous
  104. Math

    The Jaspers collect nickels, dimes, and quarters in a jar. When they count the change in the jar, there are twice as many nickels as there are quarters. If there is $15.30 in dimes and $74.80 in all, how many quarters are there. Please include an equation

    asked by Anonymous
  105. health

    To keep a positive attitude on the job, you should A. look for the perfect company—this will ensure everything will be all right. B. complain about the things that bother you so they can get straightened out. C. encourage others to help you with your

    asked by Bobby
  106. 7th grade science ASAP

    1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)

    asked by Delilah
  107. geometry

    determine the measure of

    asked by carol
  108. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

    asked by Anonymous
  109. biology

    If the side chain of a glutamic acid residue has a pKa of 4.1, at pH 6.1 the ratio of uncharged to charged side chain would be about A. 100:1 B. 10:1 C. 1:1 D. 1:10 E. 1:100

    asked by Dan
  110. MATH PROBLEM

    -One revolution of the Sun by the Earth requires 365 days, 5 hours, 48 minutes and 49.7 seconds. the 5 hours, 48 minutes and 49.7 second is approximated to 1/4 of a day. Every 4th year, one full day is added( leap year). How much of an error in minutes and

    asked by Kim
  111. Algebra with applications

    A poll was taken of 100 students at a commuter campus to find out how they got to campus. The results were as follows: 29 said they drove alone. 36 rode in a carpool. 36 rode public transportation. 6 used both carpools and public transportation. 4 used

    asked by Kim
  112. Math

    A moving truck fills up a shipment at an od adress, at (-2,1). It travles 7 blocks south and 6 blocks east to the new adress. What is the location of the new adress? PlEASE ANSWER THIS AS FAST AS POSSIBLE!! Amanda

    asked by Amanda
  113. Math

    a building with 143 windows has more than two floors; each floor has the same number of windows as every other floor. If there are less than a dozen floors how many windows are on each floor.

    asked by Anonymous
  114. Math Word problems

    A number of birds were in a tree. Half flew away. 6 more flew away, a quester of the birds remained. How many birds were originally in the tree.

    asked by April
  115. 8th Grade MATH

    a pack of 8 collectable cards contains 1 rare card, 3 uncommon cards, and 4 common cards. If Javier has 45 packs of cards, how many more uncommon cards does he have than rare cards?

    asked by Rubby
  116. Physics

    A 40 gram bullet is fired horizontally from a gun with a momentum of 2.8 (kg*m/s) and embeds itself into a 300 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 15 meters before falling off a

    asked by Cass
  117. Astronomy/Conversion

    There are 365.25 days in a year, 24 hours in a day, 60 minutes in an hour, and 60 seconds in a minute. Convert years into seconds. Show your work and keep 5 significant figures. Ok, so finding it is easy (multiply 24, 60, 60 and 365.25) but how does the

    asked by Anonymous
  118. Help please

    Paul Acorn maintains that the distinction between human and animal manipulation of the natural environment to create artifacts is: a. Technology b. the ethical application of technology c. Choice d. Creativity and adaptation

    asked by Nick
  119. Science

    What is the current draw of a 2 kW heater when operating at 240 V?

    asked by Evan
  120. AP Chemistry

    In a fit of boredom, a chemistry teaching assistant swallows a small piece of solid dry ice (CO2). The 8.9 g of dry ice are converted very quickly into gas at 311 K. Assuming the TA’s stomach has a volume of 1.5 L, what pressure is exerted on his

    asked by Jose
  121. College Algebra

    I posed these one's before but added parenthesis which I think made it confusing as the actually questions do not have them. So, I'm reposting them without to see if it makes sense. If not I understand. 1. Compute as indicated. Write your answer in lowest

    asked by Krissy
  122. geography

    how was colonial america both godly and devilish?

    asked by Taylor
  123. 4th. grade english

    what is the rule for why "achieved' is spelled that way instaed of "achieveed"?

    asked by debbie
  124. Math

    5/8 + 3/4 + -2/3 - 5/6 = mixed number form

    asked by T.J And the Vibe
  125. science

    what is the gravitational potential energy of an object to its weight multiplied by its what?

    asked by Erika
  126. math

    A tree stands 75feet tall and cast a shadow that is 50feet long. What is the angle of elevation from where the shadow ends and the top of the tree

    asked by zach
  127. math

    The diagram Cindy made is a lacrosse field, the model is 5 1/2 inches long and 3 inches wide if 1 inch equals 20 yards what is the area of the field?

    asked by T.J And the Vibe
  128. PLEASE HELP BIO

    If the side chain of a glutamic acid residue has a pKa of 4.1, at pH 6.1 the ratio of uncharged to charged side chain would be about A. 100:1 B. 10:1 C. 1:1 D. 1:10 E. 1:100 -i HAVE NO IDEA Which of the following amino acids has a side chain that can serve

    asked by Dan
  129. Math

    A bicycle with 26inch diameter wheels is travelingat 10 mph. To the nearest whole number how may revolutions does each wheel make per minute?

    asked by Taylor
  130. Social Studies

    how does elevation affect climate in the arabian peninsula?

    asked by Anonymous
  131. Mechanics & hydromechanics

    Find the magnitude and direction of the equilibrant of two forces, one being horizontal pull of 18 N and the other a pull of 23 N at 50 degrees to the 12 N force.

    asked by joe
  132. English

    Revised from Wednesday, January 16, 2013 (10:46 a.m.) I choose to become a Medical Transcriptionist to use my skills in writing, spelling, grammar and punctuation. My passion for medical transcription arose because of my love for research and thirst for

    asked by Evelyn
  133. science

    what is the unity of life? if asked to explain two examples could it be a human and a chimp or would the two examples be DNA and RNA?

    asked by annie
  134. Mechanics....Urgent!!

    Find the magnitude and direction of the equilibrant of two forces, one being horizontal pull of 18 N and the other a pull of 23 N at 50 degrees to the 12 N force.

    asked by joe
  135. Geometry

    A lined napkin,in the shape of a square,has sides 9-inches long.if the napkin is folded along the diagonal,what is the length of the diagonal ?

    asked by Raina
  136. Cosmology

    Lookback time for a given redshift, tL(z), is... * time between the given redshift and the beginning of the Universe. * time between the infinite and the given redshift. * equal to the age of the Universe at the given redshift. * time between now and the

    asked by qwerty
  137. Cosmology

    In a universe where the scale factor is proportional to t^α, where t is time and α is a constant less than one, the universe has: * the sign of the acceleration is undetermined * negative acceleration * positive acceleration * zero acceleration

    asked by qwerty
  138. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

    asked by Anonymous
  139. Chemistry

    (b) How many moles of HCl are present in 35.0 mL of a 4.50 M solution of nitric acid?

    asked by Anonymous
  140. math (algerba 1) Please help!

    x+y=0 3x+y=-4 Sovle each system of equation by graphing. If got the answer (-3,3), but it's not there. Please explain!

    asked by kathryn
  141. algebraic expressions 5th grade math

    larry and martha each planted the same number of carrots seeds in their gardens.After 4 weeks,larry had c carrots and martha had 6 more(write an expression)please help me solve,thank you

    asked by vicki
  142. bio

    The most common protein secondary structures (the alpha helix and beta conformation) are stabilized primarily by A. ionic bonds B. hydrogen bonds C. disulfide bonds D. van der Waals interactions E. hydrophobic interactions

    asked by Sara
  143. analyytical geometry

    find the equation of the planes 5x-3y+4=0 and x+y-2z+10=0 and which are 1 unit distance from the origin.?

    asked by manjula
  144. GENERAL CHEMESTRY

    Analyze the properties of a sodium atom and a sodium ion. What are the differences in mass, stability, and reactivity that are caused due to the differences between the sodium atom and sodium ion? Provided an in depth explanation or analysis of subject or

    asked by ROSE
  145. math

    i need help in how to check my answer for an equation problem. The problem is -n over 2 equals to 18 i already know what -n is [-36[ but now how do i check it

    asked by seher
  146. science

    a sphere of mass 500.0g is released from point A 5m above the ground and slides down to point B 3.2m through point C 2m in frictionless wire track. (1)determine the particle's speed at points B and C. (2)determine the net work done by the force of graviy

    asked by trevor
  147. math

    nate cut a pie into 7 equal pieces. he gave one piece to his dad and three times as much to his brother Chris. what fraction of the pie was left?

    asked by lori
  148. chemistry help plz

    Explain what the terms chiral atom and chiral molecule mean.

    asked by centya
  149. chem

    Determine if the following substances are soluble (at room temperature, 1 atm) in water or in hexane (: grease and CS2 how do you know this

    asked by Samantha
  150. math

    what is 62 above 0?

    asked by jaylin
  151. Social Studies

    are there social systems in the Saudi Arabia or anywhere in the Arabian Peninsula?

    asked by Anonymous
  152. Significant Figures

    I'm having a hard time with significant figures. Any help would be appreciated. The first one is 0.0000000502. I put that it has three significant figures. Is this correct? The other numbers I haven't a clue about are: 5.52 299,792,458 206,265 I get the

    asked by Carl
  153. Biostatistics

    Hi, I have answered some questions for some homework and I've got one of them wrong. I cannot modify my answer but I would really love to know why my answer is wrong. This is the statement of the problem: n this series of questions, we examine data from a

    asked by Marta
  154. Math

    a building with 143 windows has more than two floors; each floor has the same number of windows as every other floor. If there are less than a dozen floors how many windows are on each floor.

    asked by Anonymous
  155. One college algebra ?

    Hello I have a question about a problem. The problem is (- 25/9)^3/2. Its multiple choice however I think they are tricking us. A. 125/27 B. - 125/27 C. 125/3 D. Not a real number I got A as an answer but feel that it is not a real number?

    asked by Kristen
  156. Statistics

    Suppose you were in charge of advertising for an automotive dealership when the gas prices increased to $4 per gallon. Most of your cars are fuel-efficient, but you have two models that have extremely poor fuel economy, that is, a low number of miles per

    asked by Maimee
  157. English languege

    What is antonym of sharp

    asked by Abubakar
  158. Gr 9 Science - physics

    If all 3 resistors in a series 12V circuit are the same, what will the voltage be across resistor no. 3?

    asked by iza
  159. science

    lengths of railway tracks have small gaps between them. Why are the tracks built this way and what might happen it there were no gaps?

    asked by Taylor
  160. Geometry honors

    the endpoints of AB are a(-3,5) and b(9,15). find the coordinates of the points that divide AB into 4 congruent segments

    asked by Daniel
  161. Calculus 3

    Let L be the line that passes through the points (0,1,6) and (0,3,2). Find the length of the projection of k= on the line L. I know how to do this if one part of the vector k is touching the line, but unless i'm mistaken, that is not the case in this

    asked by Heather
  162. Calculus 3

    Let L be the line that passes through the points (0,1,6) and (0,3,2). Find the length of the projection of k= on the line L. I know how to do this if one part of the vector k is touching the line, but unless i'm mistaken, that is not the case in this

    asked by Heather
  163. math

    Write each sentence as an equation. The difference of y and 3 amounts to 12.

    asked by vic
  164. Math

    Find the principle, given r=3% and t=3/4 years, a=2556.25

    asked by Me
  165. Algebra

    1. Create the indicated algebraic expression. Use descriptive variables. The length of a rectangular lawn is 6 ft more than three times the width of the lawn. Express the length of the lawn in terms of the width. A. 3+w+6 B. 3(w+6) C. 6w+3 D. 3w+6 For 1 I

    asked by Krissy
  166. 3rd grade math

    nina has a quilt. 1/3 of the square on it are pink. rosa has the same size quilt. the fraction of pick square on her quilt is greater. which fraction show the pink squares of rosa's quilt. A 1/2 B 1/5 c 1/4 D 1/6

    asked by mythreyee
  167. Physics

    Question: particle J with zero initial mass and X energy accelerates from a static start to 'C' (light speed) in a time frame of N and mass increases 10 to the 28th power per nanosecond- -What is the mass on particle J? -What is the energy of particle J?

    asked by Dan
  168. 3rd grade math

    tyrone and jerome have the same number of marbles. 3/6 of tyrones marbles are blue. jerome has fewer blue marbles. which fraction shows the number of blue marbles jerome has A. 1/2 B. 2/4 C. 1.6 D. 4/6

    asked by mythreyee
  169. 6th grade s.s forgot textbook in locker!!!!

    Need help immediatly!!! If someone already posted please still post! And I'm not doing this becuze I'm lazy but becuze I forgot my textbook in my locker and there's nothing on the internet to help!!! TOPIC: NORTHERN EUROPE 1.What river makes london a

    asked by leslie
  170. physics

    Why metal was used to make each object you should consider to propies of metal when you answear this question

    asked by Malefu
  171. 3rd grade math

    kate ate 3/3 of sandwich. cao ate 7/7 of a sandwich that was the same size as kate's who ate more. explain you answer

    asked by mythreyee
  172. 3rd grade math

    Two thirds of the musicians in a 16-piece band are girls. the 16 musicians include 12 brass players. what fraction of the band plays brass instrument.

    asked by mythreyee
  173. math

    8n^2+14n-15=0

    asked by Caitlyn
  174. math

    the quotient of n and 5 is 4 times n. Write each sentence as an equation

    asked by vic
  175. math

    there are two 2's in 299,792,458.name the place value of each 2.explain how their values are related.

    asked by skylar
  176. Algebra

    I have two terms. 3.675v^1 + 0.096v^2 do I add these exponents?

    asked by Lyric
  177. Math

    Juan says the diameter of circle with a radius of 8 inches is 4 inches. What is his error? What is the correct diameter?

    asked by Ryan
  178. math

    susie writes the division fact 20/5=. write the remaining fact in this fact family.

    asked by johnathan
  179. algebra

    The perimeter of a rectangle equals the sume of the lengths of its four sides. If the width of a rectangle is 9 inches and its perimeter is 52 inches, find the length of the rectangle.

    asked by luis barreto
  180. Math Word problems

    A number of birds were in a tree. Half flew away. 6 more flew away, a quarter of the birds remained. How many birds were originally in the tree.

    asked by April
  181. Mechanics & hydromechanics

    A uniform plank AB of length 4.6 m and weight 508 N is suspended by a vertical rope at each end.A girl of weight 305 N stands in the position 1.6 m from one end.Calculate the tension in the rope at one end using the other end as axis of rotation.

    asked by joe
  182. math

    • regular rate: $2.10/lb • ship 101 to 500 lb, get a 20% discount • ship over 500 lb, get a 40% discount A large medical supply company has promised to donate 12 hospital beds and 4 wheeled stretchers over four months. Each bed weighs 58 kg and each

    asked by jen
  183. math

    Which dimensions of two rectangular prisms have volumes of 100 m3 but different surface areas

    asked by skyler
  184. help

    3/10 and 7/8 can u help me convert it then simplify my biggest answer is 24/70

    asked by tesj
  185. Geometry

    What dose a squared , b squared , c squared represent ?

    asked by Lessley
  186. math

    How much cans of paint is needed to cover an area of 36 metres square if one can covers 25meters square.

    asked by Anonymous
  187. math

    16-9+3/6 is the answer 9

    asked by Adelia
  188. social science

    1) Which large European city declined significantly in population over the past century? A) Paris B) London C) Rome D) Madrid 2) The industrial city was characterized b A) decentralization B) corporate growth C) manufacturing D) commerce 3) Modern humans

    asked by sally
  189. english

    How important of a factor does money play in the lives and happiness of individuals? is this sentence grammatically correct?

    asked by jaz
  190. Cosmology

    The most cosmological measurements show that the universe is extremely flat (Ωk≈0) and that the surface brightness of objects scales with the fourth power of redshift (SB∝z^−4). If the universe was still expanding, but had strong negative curvature

    asked by qwerty
  191. Cosmology

    In an Einstein-de Sitter (matter-dominated) universe, the scale factor is proportional to time to the power of: * 3/2 * 2/3 * 1/2 * -1/3

    asked by qwerty
  192. Cosmology

    A curvature constant of k=0, as used in the Friedmann equation, means: * The universe is open * The universe is matter-dominated * There is no dark energy * The universe is flat

    asked by qwerty
  193. Physics

    How many joules would be required to raise the temperature of 20g of ice at oC to water at15C?

    asked by Benny
  194. statistics

    The mean of a normally distributed data set is 226.2. The data item, 230, has a z-score of 0.2. Find the standard deviation.

    asked by Anonymous
  195. biology

    Which of the following amino acids has a side chain that carries a negative charge in its conjugate base form? A. H B. W C. C D. K E. N

    asked by Dan
  196. Geometry

    A^2 , b^2 , c^2 represent

    asked by Nessie
  197. Science

    What's a benefit and risk of nuclear energy?

    asked by Cassidy
  198. political science

    what are the argument for and against politics being a science

    asked by jean
  199. analytical geometry

    two edges PQ,RS of a tetrahedron PQRS are perpendicular,show that the distance between the mid-points of PS and QR is equal to the distance between the mid points of PR and QS

    asked by manjula
  200. analytical geometry

    the axes are rectangular and a point P moves on the fixed plane lx+my+nz=p.the plane through P perpendicular to OP meets the axes in A,B,C parallel to YOZ,ZOX,XOY intersect in Q.show that the locus of Q is p{1/x2+1/y2+1/z2}=l/x+m/y+n/z

    asked by manjula
  201. economics

    Jesse and Kimberly recently graduated from college and are starting a family. Currently, they are just making ends meet with their $45,000 salary. They want to contribute the maximum amount (currently $2,000) to fully fund an Educational Savings Account

    asked by john
  202. food

    how much is 2/3rd of a cup of sugar when it is .36 a cup?

    asked by luke
  203. Algebra

    Subtract. [2x/(x^2-y^2)]-[7/(y-x)] Thank you! :)

    asked by Alan
  204. Algebra 1

    Using the point-slope form of a line, y-4= -2(x+3) identify the slope. b. Transform this given equation into slope-intercept form.

    asked by Haylie
  205. Math

    How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?

    asked by Anonymous
  206. Math

    How many fencing materials will be needed if the measurements of the sides of the lot to be fenced are 37.5m and 24.8m?

    asked by Anonymous
  207. Business Finance

    What effects does depreciation have on cash flow? When it comes to ratio analysis, which ones are the most important? Which businesses might use certain ratios more than others and what was the purpose of the Du Pont Indentity?

    asked by Anonymous
  208. algebra

    9w + 3 = 6(w - 2)

    asked by JEM
  209. Math - missing fraction

    Please advise how it is I go about finding the missing fraction. I get so confused. The problem is: N-3/5=1/4 I know the LCD would be 20 but from there, I am lost. Thank you.

    asked by Renee
  210. INTRODUCTION TO MANAGING PERSONAL HEALTH

    The one area you can't control to reduce your chances of stroke, heart disease, or diabetes is?

    asked by Hennessey
  211. English

    I'm doing an essay on generalizations and I need 3 paragraphs on it. Also, I need help thinking on what generalization I should do and how I can support it.

    asked by Teshawn
  212. Algebra

    What is the x-coordinate of the solution of the system y=1/3+8 and 2x-y=2?

    asked by Sylvie
  213. science

    lengths of railway tracks have small gaps between them. Why are the tracks built this way and what might happen it there were no gaps?

    asked by Taylor
  214. Chemistry

    1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?

    asked by Anonymous
  215. Algebra

    Is it possible to find a value for c so that the linear system below has exactly one solution? Explain. 5x+3y= 21 Equation 1 y= -5/3x+c Equation 2

    asked by Sylvie
  216. Chemistry

    What is the dilution formula? I have not learned this,

    asked by Anonymous
  217. math

    the first landscaper charges $16 per hour to landscape my house, plus $225 for the products needed. the second landscaper charges $61 per hour (products included). for how many hours will the cost of either landscaper be the same?

    asked by tristin
  218. Gr 9 Science - physics (part 2)

    If the current at one corner of the 12V series circuit is 1.0 A, what is the current at corner number three (all three resistors are the same).

    asked by iza
  219. Math

    A local men's suit manufacturer had 2,742 square meters of fabric to make identical suits, all of the same size. If each suit used 7.4 of fabric, how many suits could be made?

    asked by Stephanie
  220. Calculus 3

    Let u=j+k and v=i+jsqrt2. a) Calculate the length of the projection of v in the u direction. b) Calculate the cosine of the angle between u and v. Your help is very much appreciated!

    asked by Heather
  221. math

    Use an x to represent each unknown number. Twice the sum of a number and three.

    asked by vic
  222. physics

    define 1watt of power . a lamp consumes 1000J of electrical energy in 10s calculate its power.

    asked by prudhvi
  223. Math (Help please)

    Find the points on y=(-x^2+4x-3)^3 that has a horizontal tangent line.

    asked by Aa
  224. Chemistry

    I'm supposed to compare the percent composition of gases in the atmosphere at sea level to the percent composition at high altitude.. Would the percents decrease? I don't really understand

    asked by Sara
  225. math

    16/4(4)=?

    asked by bibha
  226. Grammar

    Do I use to or too in the following sentence? Rita and I are picky who we give compliments to or too?

    asked by Gigi Seitlin
  227. Pre Algebra STill needs help

    What is the radius of a circle with the area of 4pi/9?

    asked by West M
  228. math

    3p equals 39 what is the value of p

    asked by victpria
  229. Math

    Which of the following is equivalent to x^5 y^2/xy^2 when =/ 0 and y =/ 0 ? (1 point) A.) X^6 Y^5 B.) X^5 Y C.) X^4 Y D.) X^4 I don't even have a good guess. Thank you.

    asked by Deborah
  230. science

    what is the iupac name of ch tripple bond c single bond ch2 single bond cl

    asked by Ankit
  231. Algebra

    Find the constant of variation for the quadratic variation. 6y = 4x2 A. 4/9 B. 2/3 C. -2 D. 3/2

    asked by Becka
  232. 3rd grade math

    rogelio has 3 one-dollar bills, 5 quarters, 4 dimes, 2 nickles and 9 pennies. what fraction of the coins are quarters. A 1/2 B 1/5 c 1/4 D 4/10

    asked by mythreyee
  233. English

    What type of analogy is garbage:smelly and antenna:radio?

    asked by Teresa
  234. science

    how does the sulfur and iron reaction work?

    asked by laksan
  235. Grammar

    Is this correct? My parents and we.

    asked by Anonymous
  236. math

    What is the pressure exerted on the floor by a 2,000N crate with an area of 4m²?

    asked by thomas sanxez
  237. math

    50 red cars and 30 white and 20 blue what is the probability of 2 cars from the same colors ?

    asked by omar
  238. math

    jackie wrote 5,406,029 in expanded form this way: [5 x 1,000,000] + [4 x 100,000] + [6 x 10,000] + [2 x 10] what two errors did jackie make?

    asked by skylar
  239. 3rd grade math

    Draw a model to show 84/12=7

    asked by johnathan
  240. MATH

    in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related

    asked by skylar
  241. us history

    what term decribes the division of government into 3 branches is it separation of powers

    asked by a
  242. CHEMISTRY

    1. How would you take 1L of an existing solution with a concentration of 1M and use it to make a new solution of 0.1 M? Be specific. 2. Would it be possible to easily create a 2 M solution from 100 mL of 1 M solution? Explain why or why not?

    asked by Anonymous
  243. english

    I have to write a two page assignment onorganization. can you show me an apa format. joann

    asked by joann
  244. Mechanics & hydromechanics

    A uniform 98 N pipe is used as a lever. Where the fulcrum must be placed if a 504 N weight at one end is to balance a 192 N weight at the other end?

    asked by joe
  245. math

    what is annuity?

    asked by jiskha
  246. chemistry

    Elemental zinc will react with acid to evolve hydrogen gas. This is a redox reaction. Write a balanced molecular equation for the reaction of zinc and hydrochloric acid, showing the coefficents and the phases of all reactants and products. Below is an

    asked by simon
  247. Math

    A music CD has a diameter of 4 inches. What is the radius? Explain your thinking.

    asked by Ryan
  248. MATH

    in 2005,Eastside elementary school was built at a cost of $18,000,000.the school it replaced was built in 1935 at the cost of $180,000.explain how the values of the 8 in each number are related

    asked by skylar
  249. Math

    Tom has 1/5 more single dollar bills than Monica. Tom has 1/5 fewer single dollar bills than Elaine. If Monica has $10 in singles, then Elaine has How many dollars in singles?

    asked by CeCe
  250. 7th grade science

    1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)

    asked by Delilah
  251. Math

    X

    asked by Denise
  252. physics

    A wave travels 750 meters in 5 minutes. Its wavelength is 16.1 meters. What is its period?

    asked by Max
  253. science

    How can I find the physics behind why a wheel moves faster or slower than other wheels? Is this friction?

    asked by Jackson
  254. math

    Suppose that function f:[0,2]->R is continuous at [0,2], differentiable at (0,2) and such that f(0)=0, f(1)=1 and f(2)=1. a) Show that there is a x1 that belongs to (0,1) such that f'(x1)=1. b) Show that there is a x2 that belongs to (1,2) such that

    asked by Zisis
  255. Geometry

    Sarah wrote the following 3 numbers as an example of a Pythagorean triple.Is she correct?why or why not? 21,25,35

    asked by Dayna Washington
  256. Cosmology

    Which of these is NOT a good estimate of the age of the universe? * Decay times of 238U and 232Th in metal-poor stars. * Isochrone fits for globular clusters. * Ages of the faintest white dwarfs. * Ages of the hottest main-sequence stars in distant

    asked by qwerty
  257. science

    what is the scorpio constellation?

    asked by kein
  258. Cosmology

    The single largest uncertainty in the measurement of the Hubble constant using gravitational lenses comes from uncertainty of... * the distance to the lensing cluster or galaxy. * the mass distribution of the lensed quasar. * the distance to the lensed

    asked by qwerty
  259. Cosmology

    In the Tully-Fisher relation, the scatter is minimized at which wavelength? * Red * Blue * Infrared * UV

    asked by qwerty
  260. Chemistry

    Please help, do you have any pointers on how to use linear regression in determining the reaction order

    asked by Xavier
  261. Cosmology

    As compared to Cepheids, RR Lyrae stars are... * fainter and slower pulsating. * brighter and faster pulsating. * fainter and faster pulsating. * brighter and slower pulsating.

    asked by qwerty
  262. math

    write 1 2/3 as a fraction?plezzzzzzzzz hellllllllllllllllllllllllllp!!!!!!!!!!!!!!!!!!!

    asked by remy
  263. Cosmology

    In order from earlier to later times, the dominant components of our universe have been: * dark energy, matter, then radiation * dark energy, radiation, then matter * matter, radiation, then dark energy * radiation, matter, then dark energy

    asked by qwerty
  264. math ??

    what is the 43rd term of -124-122-120

    asked by tori
  265. Math

    Position Term 1 10 2 14 4 22 8 38 n a) Create an expression that represents the term’s value in terms of the position.

    asked by Lizzy
  266. marh 150 help

    simplify 2x^7-9x^7 and 80 dollar shirt 30% off = ? (how do i put this together)

    asked by eddie
  267. 7th grade science bobpursley

    5. Change in the hereditary features of a type of organism over time is ______. (1 point) growth biogenesis spontaneous generation evolution 10. Gregor Mendel discovered some alleles can cover up the presence of others; these alleles are called __________.

    asked by Delilah
  268. arithmetic

    change 12/23 into a decimal to the nearest hundreth's

    asked by mark
  269. math

    largest prime # under 100

    asked by Tyson
  270. biology

    Which of the following amino acids has the most hydrophilic side chain? A. F B. Q C. V D. M E. A

    asked by Dan