Questions Asked on
November 10, 2012

  1. Math

    A cone is constructed by cutting a sector from a circular sheet of metal with radius 20cm. The cut sheet is then folded up and welded. Find the radius and height of the cone with the maximum volume that can be formed in this way.

    asked by Lee Meyer
  2. Corporate Finance

    Taxes and WACC. Rainbow in the Dark Manufacturing has a target debt-equity ratio of .65. Its cost of equity is 13%, and its cost of debt is 8%. If the tax rate is 35%, what is the company's WACC?

    asked by Susanne
  3. algebra

    The graph of g(x) is f(x) translated to the left 8 units and up 2 units. What is the function rule for g(x) given f(x) = x²?

    asked by Shadrick
  4. Binomial Probability

    Before 1918, wolves were shown as 55% male, 45% female. From 1918 to present they were shown as 70% male and 30% female. In a random sample of 12 wolves, what was the probability that 6 were male? What was the probibility that 6 or more were female? What

    asked by Bill
  5. chemistry

    How many moles of magnesium is 1.25 x 1023 atoms of magnesium? A. 0.208 × 101 mol Mg B. 2.08 × 101 mol Mg C. 2.08 × 10 -1 mol Mg D. 20.8 mol Mg I think it would be D

    asked by Drew
  6. math

    the pet shop owner told Jean to fill her new fish tank 3/4 full with water. Jean filled it 9/12 full. What fraction of the tank does Jean still need to fill??

    asked by Marie
  7. science

    About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the

    asked by madison
  8. Physics

    A camel sets out to cross the desert, which is 42.7 km wide in the north-south direction. The camel walks at the uniform speed 3.81 km/hr along a straight line in the direction 51.9◦ north of East (only the camel knows why he chose that particular

    asked by Jake Penn
  9. physics

    Starting from rest, a crate of mass m is pushed up a frictionless slope of angle (theta) by a horizontal force of magnitude F. Use work and energy to find an expression for the crate's speed v when it is at height h above the bottom of the slope. Express

    asked by Ohimai
  10. probability

    the model of the car you are thinking of buying is available in five different colors and four different styles. In how many ways can the car be ordered?

    asked by Karina
  11. chemistry

    Use the kinetic molecular theory of gases to explain each of the following: a. a container of nonstick cooking spray explodes when thrown into a fire. b. the air in a hot-air balloon is heated to make the balloon rise.

    asked by Boo Boo
  12. science

    3. The relationship in which one species benefits and the other is unharmed is known as _____. (1 point) a niche commensalism mutualism parasitism 4. Population size is limited by all of the following except _____. (1 point) biotic factors abiotic factors

    asked by aliyah
  13. Corporate Finance

    Calculating Cost of Debt. Peyton's Colt Farm issued a 30-year, 7% semiannual bond 7 years ago. The bond currently sells for 94% of its face value. The company's tax rate is 35%. What is the pretax cost of debt? What is the aftertax cost of debt?

    asked by Susanne
  14. chemistry

    Is diphosphorus pentoxide an ionic or a molecular compound? A. Ionic B. Molecular I say B

    asked by shana
  15. PHYSICS!

    0.115 kg of water at 81.0o C is poured into an insulated cup containing 0.220 kg of ice initally at 0o. Calculate the mass of liquid when the system reaches thermal equilibrium.

    asked by Emma
  16. Chemistry

    Balance this chemical equation. K4Fe(CN)6 + KMnO4 + H2SO4 ---> KHSO4 + Fe2(SO4)3 + MnSO4 + HNO3 + CO2 + H2O

    asked by Peter
  17. Accounting

    The beginning inventory of Merchandise at Waldo Co. and data on purchases and sales for a three-month period are as follows: Date Transaction Number of Units Per Unit Total March 3 Inventory 60 $1500 $90,000 8 Purchase 120 1800 216,000 11 Sale 80 5000

    asked by tabitha Bennett
  18. mechanics (calculating plane speed and climb angle

    Two radar stations A and B, are separated by the distance a = 500 m, track the plane C by recording the angles α and β at 1-second intervals. If three successive readings are t (s) 9 10 11 α 54.80◦ 54.06◦ 53.34◦ β 65.59◦ 64.59◦ 63.62◦

    asked by royston
  19. physics

    Assume that if the shear stress in steel exceeds about 4.00 108 N/m2, the steel ruptures. (a) Determine the shearing force necessary to shear a steel bolt 1.40 cm in diameter. (b) Determine the shearing force necessary to punch a 1.75-cm-diameter hole in a

    asked by Kat
  20. chemistry

    _H3PO4+_KOH->_K3PO4+_H2O if 49.0 g of H3PO4 is reacted with excess KOH, determind the percent yield of K3PO4 if you produce 49.0 g of K3PO4.

    asked by kelly
  21. Physics Help!

    An air bubble has a volume of 1.51 cm3 when it is released by a submarine 102 m below the surface of a lake. What is the volume of the bubble when it reaches the surface? Assume that the temperature of the air in the bubble remains constant during ascent.

    asked by Emma
  22. physics

    Initially, a particle is moving at 5.30 m/s at an angle of 35.0° above the horizontal (+x axis). Two seconds later, its velocity is 5.97 m/s at an angle of 50.0° below the horizontal. What was the particle's average acceleration during this time

    asked by Ed
  23. Physics

    The pilot of a plane measures an air velocity of 186 km/h south. An observer on the ground sees the plane pass overhead at a velocity of 102 km/h toward the north. A.) What is the velocity of the wind that is affecting the plane? Let north be positive.

    asked by Jake Penn
  24. math

    State a trigonometric ratio that is equivalent to each of the following trigonometric ratios Sin 3pie/10 Cos 6pie/7

    asked by Melissa
  25. Biology! pleaseee helppp

    About 70% of the human population can taste the bitter chemical phenylthiocarbamide (PTC), which is found in foods like broccoli. The allele, T, for tasting PTC is dominant over the allele, t, for not tasting it. Calculate the allele frequencies using the

    asked by Madi
  26. chemistry

    How many atoms are in 3.14 mol of methane (CH4)? A. 7.56 x 1023 atoms B. 7.56 x 102 atoms C. 7.56 x 104 atoms D. 7.56 x 1024 atoms D

    asked by Drew
  27. FInance

    Assignment 2: Lease vs. Buy Your employer, Barnaby Well Company, is considering the acquisition of a new drill truck and your boss has asked you to evaluate the decision that she has made to buy the truck. The truck has a purchase price of $60,000 and a

    asked by Deanna
  28. Think-A-Gram

    How do you solve this think-a-gram: picture a square with letters PLAPOWERCES in the top part of the square. I thought the answer would be places^2 since the word POWER is in the middle of place and the letters are in a "square", which is at the top, but

    asked by Chocalate Frost
  29. Chemistry

    Describe nuclear fission and write a nuclear equation to describe the fission of U-235? Uranium-235 undergoes neutron-Induced fission to produce Xe-144 and Sr-90. Write a nuclear equation for the reaction. How many neutrons are produced?

    asked by Nomi
  30. earth

    A winding natural stream with weeds has an average depth of 0.86m and is 7.25m across. The stream channel drops 0.34 m/km. What is the stream’s average velocity?

    asked by Gwen
  31. Algebra

    An apple orchard charges a fixed amount for the first four bushels of apples purchased and an extra amount for each additional bushel purchased. If the cost of 11 bushels of apples is $33 and the cost of 19 bushels is $55, what is the fixed charge for the

    asked by Kevin
  32. Advance fuctions

    write and that is equivalent to each of the following expression,using the related acute angle a) sin 13pi/6 b) cos 11pi/8 c) tan 7pi/4

    asked by nadia
  33. chemistry

    How many atoms are in 1.14 mol of propane (C3H8)? A. 7.55 x 1023 atoms B. 7.77 x 1024 atoms C. 7.55 x 1024 atoms D. 7.55 x 1030 atoms C

    asked by Drew
  34. physics

    A 10.8 kg block of metal is suspended from a scale and immersed in water, as in the figure below. The dimensions of the block are 12.0 cm 10.4 cm 10.4 cm. The 12.0 cm dimension is vertical, and the top of the block is 5.00 cm below the surface of the

    asked by Kat
  35. chemistry

    how many liters of hydrogen gas can be formed at 722 mmHg at 15 degress C when 5.5 grams of zinc metal with 150 mL of 1.25 molarity HCl solution?

    asked by Missy
  36. Chemistry

    the specific heat of water is 4.184 j/g °c. How many grams of water at 85 C would have to be added to raise 1.00 kg of water from 25.0 C to 50.0 C? Please help I am not sure of where to start!

    asked by Anonymous
  37. Physics

    A hydraulic lift is used to jack a 780 kg car 15 cm off the floor. The diameter of the output piston is 15 cm, and the input force is 160 N. a)What is the area of the input piston (in m^2)? b)What is the work done in lifting the car 15 cm? c)If the input

    asked by Melissa
  38. Physics deflection ammeter

    8. A galvanometer has a coil resistance of 100 ohms and gives a full scale deflection when the potential difference across it is 0.0002 V. What size resistor (with a value measured in ohms) is required to make a 1.0 A. full scale deflection ammeter?

    asked by andrew
  39. chemistry

    Which of the following is generally defined as a substance composed of molecules in which two or more nonmetallic elements are joined? A. Binary compound B. Ionic compound C. Molecular compound D. Ternary compound I think A

    asked by Keri
  40. precalc/Trig

    Assume we know the following: cos(22.5 degrees)= sqrt(2+sqrt2)/2 sin(22.5 degrees)=sqrt(2-sqrt2)/2 cos(18 degrees)=sqrt((sqrt5+5)/8) sin(18 degrees)=(sqrt5-1)/4 What is: Sin(82.5 degrees) cos(82.5 degrees) sin(12 degrees) cos(12 degrees)

    asked by Anonymous
  41. Science

    Is this correct? In pea plants, the allele for green pods is G. The allele for yellow pods is g. In the offspring 27 (75 percent) had green pods and 9 (25 percent) had yellow pods. What are the parents genotypes? How do you know? The parents genotypes are

    asked by Alexander
  42. math

    in a class of 38 children,19 play tennis, 21 play squash and 10 play neither sport. (1)how many children play both sports?(2)how many children play only tennis

    asked by wan
  43. chemistry

    _A2(SO3)3+_NaOH->_Na2SO3+_Al(OH)3 if you start with 389.4 g of Al2(SO3)3 and you produce 212.4 g of Na2SO3, what is your percent yield for this reaction?

    asked by kelly
  44. Advance fuctions

    write and that is equivalent to each of the following expression,using the related acute angle a) sin 13pi/6 b) cos 11pi/8 c) tan 7pi/4

    asked by nadia
  45. statistics

    An independent-measures study with n = 6 in each sample, produces a sample mean difference of 4 points and a pooled variance of 12. What is the value for the t statistic? a. 1 b. 2 c. 4/√2 d. 4/√8

    asked by Robbie
  46. Physics PLEASE HELP

    After 6.00 kg of water at 77.3 oC is mixed in a perfect thermos with 3.00 kg of ice at 0.0 oC, the mixture is allowed to reach equilibrium. When heat is added to or removed from a solid or liquid of mass m and specific heat capacity c, the change in

    asked by Anonymous
  47. Inorganic Chemistry

    Name this compound: [Co(NH3)5Cl]Cl2

    asked by Ken
  48. math

    Two race cars are speeding around the racetrack at different speeds. One goes around the track in 2 minutes; the other goes around the track in 11/2 minutes. How often does the faster car pass the slower car?

    asked by Anonymous
  49. Physics

    Calculate the true mass (in vacuum) of a piece of aluminum whose apparent mass is 1.6000kg when weighed in air.

    asked by Melissa
  50. Corporate Finance

    Calculating Cost of Equity. Bohannon Corporation's common stock has a beta of 1.10. If the risk-free rate is 4.5% and the expected return on the market is 12%, what is the company's cost of equity capital?

    asked by Susanne
  51. math

    Find the volume of the solid formed by rotating the region enclosed by y=e^2x+5 y=0 x=0 x=0.4 about the x-axis.

    asked by Anonymous
  52. Math

    Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) f(x)=x^(4/5)(x − 6)^2

    asked by AH
  53. chemistry

    The chemical explosive nitroglycerine has the formula C3H5(NO3)3. How many oxygen atoms are in the formula unit for this compound? A. 3 B. 6 C. 9 D. 12 C. 9

    asked by Drew
  54. algebra

    Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. The table ges right side dwnards, 7,8,9,10 the left side dwn ges 11, 13, 15, 17 Now I understand it I just don't knw how t write it. Help please

    asked by Shadrick
  55. chemistry

    1K2PtCl4+2(NH3)->1Pt(NH3)2Cl2+2KCl what is the percent yield, when 34.5 grams of NH3 react with excess K2PtCl4 if 76.4 g of Pt(NH3)2Cl2 are actually produced?

    asked by kelly
  56. math

    After pulling into a parking spot, Ms. Feliz backed her car up 2 feet. Write an expression with absolute value to show the distance Ms. Feliz TRAVELD ARTER PULLING INTO THE PARKINSPOT

    asked by elie
  57. chemistry

    Which phase of ionic compounds are good electrical conductors because the ions are free to carry electrical current? A. Solid B. Liquid C. Gas D. Crystalline I say B

    asked by shana
  58. Math

    Simplify the following expression as far as possible. 1. 9x - 2x .2. -3y - 30y . .3. 2a - 9a

    asked by Sunday
  59. chemistry

    2. Sulfuric acid comes from the oxidation of sulfur. The stages of the reactions are given below: S + O2 --> SO2 ∆H= -296.8 kj SO2 + 1/2 O2 --> SO3 ∆H= -98.9 kj SO3 + H2O --> H2SO4 ∆H= -130.0 kj The typical plant produces 750 tons of H2SO4 per day.

    asked by Christina
  60. Chemistry

    For a given sample of CH3OH, the enthalpy change on reaction is 17.0 kj. How many grams of hydrogen gas are produced?

    asked by Sherri
  61. Business Research

    A data processing analyst for a research supplier finds that a preliminary computer run of survey results show that consumers love a client’s new product. The employee buys a large block of the client’s stock. Discuss the ethical ramifications of this

    asked by Nikki
  62. Physics

    A file cabinet weighing 1500 N is at rest on the floor. The coefficient of static friction between the floor and the cabinet is 0.5. What is the minimum force required to make the file cabinet move horizontally

    asked by John
  63. Physics

    A stone is thrown from the ground with initial velocity v0 directed at angle alpha with respect to the horizon. Find equations of its motion both in x and y directions.

    asked by David
  64. math

    I am a fraction with a deminator of 4. I am greater than1/2 but less than 1. What fraction am i?

    asked by Ally
  65. chemistry

    How many moles are in 1.50 x 1023 molecules NH3? A. 2.49 x 10 -1 mol NH3 B. 2.49 x 101 mol NH3 C. 2.65 x 10 -1 mol NH3 D. 2.78 x 10 1 mol NH3 maybe B

    asked by Marian
  66. Physics Q

    If a water heater has a capacity of 54.4 gallons and a 4910 W heating element, how much time is required to raise the temperature of the water from 19.8oC to 60.0oC? Assume that the heater is well insulated and no water is withdrawn from the tank during

    asked by Emma
  67. Physics

    For safety in climbing, a mountaineer uses a nylon rope that is 55 m long and 0.9 cm in diameter. When supporting a 82-kg climber, the rope elongates 2.0 m. Find its Young's modulus. I got 34737.433 but that is not the right answer please help!

    asked by Kat
  68. Dimension Personal Education

    Select the sentence that does not have a pronoun-antecedent error. 1. If anybody wants to go to that new restaurant, she or he has to make reservations a month in advance. 2. If anybody wants to go to that new restaurant, they have to make reservations a

    asked by Jackie
  69. physical science

    A birthday candle 4 cm high is 10 cm from a converging lens whose focal length is 15 cm. Use a ray diagram on a suitable scale to find the location of the image, its height, and whether it is erect or inverted, real or virtual.

    asked by jayla
  70. chemistry

    When compared to compound B, compound A has lower melting and boiling points and vaporizes more readily. Is compound A an ionic compound or a molecular compound? A. Ionic B. Molecular I say B

    asked by shana
  71. Math

    At the regional swim meet the swimmer with the fastest time finished in 2 5/6 minutes. The last place finisher has a time of 4 2/3 minutes. What was the difference in minutes between the first and last place? A.2 1/6 B.1 5/6 C.2 1/5 D.1 1/6 B? Farmer Brown

    asked by Jerald
  72. Finance

    Assignment 1: LASA 2—Cash Management and Budgeting The new owner of Bob’s Boats, Bob, just purchased the business and discovered that the prior owner did not have a plan for managing the current assets of the company. Bob has decided that the place to

    asked by Deanna
  73. math

    Received an order for 3 Liters of 0.9% NsCl to be infused by an infusion set rate at 60gtt/ml set at 60gtt/min. How long will it take to infuse the 3 liters of fluid?

    asked by Denyse
  74. Chemistry

    the molar heat of combustion of propane is -2.2*10^3 kJ. how many grams of propane would have to combusted to raise 1.0kg of water from 22.0 C to 100.0 C?

    asked by Anonymous
  75. chemistry

    The water molecule (H2O) is composed of 2 atoms of hydrogen and one atom of oxygen. What is the mass of one mole of water? A. 3 g B. 18 g C. 6 g D. 6.02 x 1023 g B. 18 g

    asked by Drew
  76. biology

    Calculate the density of a solid cube that measures 5.18 cm on each side and has a mass of 197 g. Answer in units of g/cm3

    asked by dynesha
  77. Chemistry

    Each of 2 front tires in the car is filled with a different gas. One tire contains 116 g of helium, another tire has 160 g of unknown gas. How many times heavier is a molecule of the unknown gas than an atom of helium?

    asked by Christina
  78. Physics

    A submarine dives 133.0 m at an angle of 16.0◦ below the horizontal. A.)What is the horizontal component of the submarine’s displacement? Answer in units of m B.)What is the vertical component of the submarine’s displacement? Answer in units of m

    asked by Jake Penn
  79. Physics

    A hummingbird flies 1.6 m along a straight path at a height of 5.4 m above the ground. Upon spotting a flower below, the hummingbird drops directly downward 2.4 m to hover in front of the flower. A.) What is the magnitude of the hummingbird’s total

    asked by Jake Penn
  80. chemistry

    How many atoms of nitrogen are in the chemical formula N2O? A. 1 B. 2 C. 3 D. 4 I say A

    asked by Keri
  81. Dimension Personal Education

    Help.............. Select the sentence that does not have a pronoun-antecedent error. 1. The local museum is extendign its hours for the summer 2. The local museum is extending their hours for the summer.

    asked by Jackie
  82. chemistry

    The chemical formula CCl4 tells us that there are a total of how many atoms in each molecule of the compound? A. 2 B. 3 C. 4 D. 5 I say D

    asked by Keri
  83. Dimension Personal Education

    Select the sentence that has correct pronoun usage.... 1. Julie plans to travel this summer with Oscar and me. 2. Julie plans to travel this summer with Oscar and I

    asked by Jackie
  84. Physics

    A 6.44 E+06 ohm resistor and a 1.00 microfarad capacitor are connected in a single loop circuit with a seat of emf of E = 2.00 V. At 6.00 s. after the connection is made, what is the rate at which energy (in joules/second) is being delivered by the seat of

    asked by andrew
  85. statistics

    . A new diet is claimed to increase the speed of weight loss. A study with a large number of volunteers showed a mean weight loss of 3.5 pounds in a week. A random sample of 8 volunteers followed the diet and recorded their weight loss at the end of the

    asked by Anonymous
  86. Social studies

    A 10 percent three-year wage increase is provided as a 2 percent increase in the first year, 3 percent in the second year, and 5 percent in the third year. This is an example of a ________ contract.

    asked by Anonymous
  87. Dimension Personal Education

    Select the sentence that has correct pronoun. 1. Natalia is a better cook than me. 2. Natalia is a better cook than I. My answer is 1. Natalia is a better cook than me.

    asked by Jackie
  88. algebra

    Determine whether y varies directly with x. If so find the constant of variation k and write the equation. x y 7 11 8 13 9 15 10 17 Help please!

    asked by Shadrick
  89. physics

    Consider the 620 N weight held by two cables shown below. The left-handed cable had tension 550 N and makes an angle of è with the wall. The right-hand cable had tension 670 N and makes an angle of è1 with the ceiling. a.) What is the angle è1

    asked by Jeff
  90. math

    -7(4x+2)+5x=170

    asked by stan
  91. chemistry

    Which of the following is true of a substance with a pH of 11.0? A. The substance is an acid. B. The substance is a base. C. The substance is neutral. D. The substance is a transition metal. I think A

    asked by Keri
  92. To Annabelle

    I have removed your extraneous answers from the last four or five posts. Please do not respond if you don't know the answer. If you persist in responding with rubbish you will be banned from this site.

    asked by DrBob222
  93. chemistry

    What is a special group of compounds that produce H+ ions when dissolved in water? A. Acids B. Ionic compounds C. Molecular compounds D. Polyatomic compounds I think A

    asked by Keri
  94. chemistry

    Just wanted to say thank you very much for the help I got from everybody :)

    asked by Keri
  95. math

    boat is traveling at 17 knotical miles an hour how far will you have gone in 12 minutes

    asked by arnold
  96. Intermediate Algebra

    x+8 X+5 __________ _ ___________ X^2-10x+21 x^2-3x-28 Subtract, then reduce if possible

    asked by Wanda
  97. college algebra

    Given the following rational function, find: A. horizontal asymptotes B. vertical asymptote(s), if any C. oblique asymptote(s), if any f(x)=x^2-x-2/2x^2-x-21

    asked by ladybug
  98. History

    Write a thank you veteran card

    asked by Zachary
  99. HEALTH

    i have a project about gossiping.what are tips to stop gossiping?

    asked by HEALTH
  100. chemistry

    Which of the following consists of positive and negative ions bound together and held in place in a crystalline solid? A. Covalent bonds B. Ionic compounds C. Molecular compounds D. Molecules I say B

    asked by shana
  101. chemistry

    Ionic compounds at room temperature usually exist as solids with distinct crystalline lattice structures. True False I think true

    asked by Keri
  102. chemistry

    Molecular compounds are generally composed of non-metal elements. True False I think true

    asked by Keri
  103. Calculus

    Find dx/dy for the function y=x^cos(x)

    asked by Anonymous
  104. Precalc/Trig

    evaluate the expression assuming that cos(x)=1/7, sin(y)=1/3, sin(u)=2/5 and cos(v)=1/3. what is cos(u+v)? sin(x-y)? and tan(u-v)?

    asked by Liz
  105. Calculus

    f(x) = 9^x*log_{4}x f'(x)=?

    asked by Anonymous
  106. Human Anatomy

    What is the function of the pancreas?

    asked by rawr... im a dinosaur.... rawr
  107. physics

    A=2i+3j-k, b=4i=2j-2k, find the vector x parallel to A but has magnitude of B

    asked by mariam
  108. Calculus

    integral 3e^(3x)sin(e^3x)dx

    asked by Anonymous
  109. math

    Find an equation for the ellipse that satisfies the given conditions. Length of major axis 6, length of minor axis 4, foci on y-axis

    asked by monic
  110. math

    a school is 800 m from the base of a cellphone tower.if the angle of elevation of the tower is 45 degree 45 inches from the school,how high is the tower?

    asked by daisylane
  111. math

    What is the data set for mode 3, median 4, and range 10?

    asked by alecia
  112. the faclity

    which of folling is a technique for limiting number childrenina intrest area

    asked by tina
  113. MIS

    assume you have a computer that contains 2 GB memory . It contains four memory slots . Each slot can contain 128 MB,256 Mb,512 MB,1 GB or 2 GB memory modules. currently ,each slot contains a 512 MB memory module . Determine which of these combinations is

    asked by hanaa
  114. biology

    What is the role of channel proteins in facilitated diffusion?

    asked by Amna
  115. anatiomy/help please

    Identify the blood types arising from each of the progenitor cell types: a)myeloid progenitor cells b)lymphoid progenitor cells

    asked by jack
  116. social studies

    1.The new structure of the government will lead to tyranny. (5 points) Federalists Anti-Federalists

    asked by aliyah
  117. physics RC

    The potential difference between the plates of a leaky capacitor, C = 3.00 microfarads., drops from 6.80 V. to 3.40 V. in 1.00 s. What is the equivalent resistance (in ohms) between the capacitor plates?

    asked by james
  118. nuclear chemistry

    A typical nuclear reactor produces 1mw of power per day. What is the minimum rate of mass loss required to produce this energy. Don't know where to start

    asked by Nancy
  119. chemistry

    What is the gram fomula mass of calcium carbonate (CaSO4)? A. 6 g B. 136.2 g C. 230.0 g D. 235.4 g think B

    asked by Drew
  120. math

    5Y = X + 6 = 2X - 3 What is value of Y

    asked by wan
  121. math

    as well as addition,subtraction,division and multiplication.Sally invents the operation Q. when you see Q between two numbers,you double the sum of their squares. The value of 5Q12 would be ?

    asked by wan
  122. chemistry

    What is the gram molecular mass of C2H6? A. 8.0 g B. 30.0 g C. 40.0 g D. 50.0 g think B

    asked by Drew
  123. math

    emma has 364 cookes . chis has 8956432090 cookes .aaron has 14235 times as many cookes as chis and emma

    asked by emily
  124. math

    average of 6 numbers is 19.A seventh number is added and the new average is 20.What is the seventh number?

    asked by wan
  125. Physics

    A small but measurable current of 3.20 E-10 A. exists in a copper wire whose diameter is 0.03 cm. Calculate the electron drift speed (in meters/second).

    asked by andrew
  126. math

    the diagram shows two balances.if the weight of the square object is 10 g,what is the weight of each og the other objects

    asked by wan
  127. science

    What does chlorophyll do for plants?

    asked by ellen
  128. math

    to buy a gift $1.80 was collected from each person but they were $28 sort.When $3 was collected from each person,they had $20 extra.How much were they planning to collect

    asked by wan
  129. Algebra 106

    $625.00 investested in retirement fund for 10 years @ 3.84% compounded

    asked by Sonya
  130. math

    the surface area of a cube is 150cm2,what is its volume?

    asked by wan
  131. biology

    Identify the blood types arising from each of the progenitor cell types: a)Myeloid progenitor cells b)Lymphoid progenitor cells No one has answered this question yet.

    asked by jack
  132. spanish III

    These are my directions: Change the present tense verb in the sentence to the preterite tense. Can you help me understand how to do this? These are the Questions(1-5): 1. Voy a estudiar. 2. Vas a dar comida al perro 3. Es un estudiante. 4. Somos aquí. 5.

    asked by Andrea
  133. Math

    To solve a math problem for homework Carrie needed to find the total of 2 3/4 6.00 and 3 4/5 What should Carrie have gotten as an answer? 7.55?

    asked by Jerald
  134. chemistry

    How many moles are in 4.81 x 1024 atoms Na? A. 0.799 mol Na B. 7.99 mol Na C. 481 mol Na D. 7.99 x 10-1 mol Na B

    asked by Drew
  135. chemistry

    In order to determine the number of atoms in a compound, you must know the number of atoms in a representative particle of the compound. True False i think false

    asked by Drew
  136. chemistry

    What is a problem-solving technique that uses equivalent measurements in ratio form to solve problems? A. Avogadro's number B. Conversion C. Dimensional analysis D. The mole concept A

    asked by Drew
  137. Accounting

    ABC company purchased machine for $300,000 that had a useful life of 5 years, with a salvage value of $50,000 at the end its life. Depreciation was calculated over 2 years on straight-line basis. In 20X2, it determined that the total life should be 10

    asked by Frank
  138. Math

    What nominal annual rate of interest compounded yearly is required to double an investment in 13 years?

    asked by Lexie
  139. Math

    The question is: Kelly wants to center the rug in her living room. The rug is 8 3/4 feet wide. The total width of her Living room is 12 1/2 feet. How far from each Wall of her living room should she place her rug? I did 12 1/2 divided by 8 3/4 So 12 2/4

    asked by Br
  140. Accounting

    The company’s fiscal year ends on December 31. Using the following information, compute depreciation for this machine for each of the 4 years using each of the following methods: Straight-line method Sum-of-years method Double-declining method

    asked by Frank
  141. chemistry

    How many atoms of H are in 6.0 moles of H2O? A. 7.22 x 1024 atoms B. 7.12 x 1027 atoms C. 7.32 x 1024 atoms D. 7.72 x 1024 atoms A

    asked by Marian
  142. Physics

    The weight of a rock on the moon is 0.85 N. If acceleration due to gravity on the moon is 1.7 m/s2, what will be its weight on the earth

    asked by Marc
  143. math-10th

    Simplify 7x^2+45x+18/(x^3+12x^2+36x) Please help. Thank you.

    asked by yengiang
  144. Computer

    on C++, I want to make an operation like " 2x + y - z ", I wrote something like that but I can' t get the result, where is my mistake? Ty. #include #include int main( void ) { char op; int x; int y; int z; int f; printf ("Enter the operation\n"); scanf

    asked by Kaan
  145. chemistry

    Which of the following does NOT belong with the others? A. HCl B. HNO3 C. H2O2 D. H3PO4 I say A

    asked by Keri
  146. chemistry

    What is the molar mass of hydrogen? A. 1.01 g/mol B. 11.01 g/mol C. 101.1 g/mol D. .0111 g/mol D

    asked by Drew
  147. physics

    A class of 11 students taking an exam has a power output per student of 122 W. Assume that the initial temperature of the room is 18.8oC and that its dimensions are 6.40 m by 14.5 m by 3.50 m. What is the temperature of the room at the end of 54.0 min if

    asked by Chad
  148. Math

    Evaluate the Integral pi / = (3cos^2x-1) (sinx) dx=0 0 I am really confused with this, please help! ** used / for integral, not sure if there is a way to type it!

    asked by Rianne
  149. physics

    Suppose that a guitar string has a length of 0.76 m, a mass of 0.16 kg, and a tension of 107 N. What is the velocity of a wave on this string? Can you just kind of explain it to me?

    asked by Kathia
  150. math

    suppose a lottery game allows you to select a 2-digit number. Each digit may be either 1,2,3,4,5. if you pick the winning number you win $10 otherwise you win nothing A)what is the probability that you will pick the winning number B) the notation

    asked by saleema
  151. Dimension Personal Education

    Select the sentence that has correct pronoun usage. 1. Her and my brother enjoy debating about politics. 2. She and my brother enjoy debating abaout politics.

    asked by Jackie
  152. math

    a rectangular table top measures 1/7 of a meter long by 3/8 of a meter wide. what is its area?

    asked by alma
  153. psychology

    what is ETHICAL RELATIVISM

    asked by ray ray
  154. math

    what is the reciprocal of 3 5/7

    asked by julia
  155. chemistry

    Which of the following does NOT belong with the others? A. HNO3 B. H2SO4 C. H2CO3 D. OH- I think D

    asked by Keri
  156. chemistry

    What is usually indicated by an -ite or -ate ending in a chemical formula? A. The compound carries a net ionic charge of zero. B. The compound contains a polyatomic ion. C. The compound is an acid. D. The compound is molecular. I think A

    asked by shana
  157. chemistry

    Which ion is absorbed by a base in water? A. H3O+ B. OH- C. Neutron D. Transition metal B

    asked by shana
  158. Chemistry

    I want to be a pharmacist what route do I take? Do I go to premed or....I am confused!

    asked by Anonymous
  159. French

    In this assignment, you are going to say what part of the body hurts you after reading the sentence that is there. Ce devoir vaut 20 points. Tu as vu la télévision pendant 5 heures. Tu as mangé beaucoup de chocolats. Tu as bu beaucoup d'eau après de

    asked by faith
  160. Engineering

    If you have a 300 ohm transmission line terminated with an antenna that presents a (400 ohm - j 600 ohm) load impedance: What is the normalized load admittance? (I come up with 1.5 - j 2 but am uncertain if correct) How far from the load should a short

    asked by Eddie