1. Chemistry

    A 0.5370 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.2523 g. What is the mass

    asked by Orla on October 25, 2012
  2. physics

    A meter stick, suspended at one end by a 0.348m long light string, is set into oscillation. The acceleration of gravity is 9.8 m/s^2. A)Determine the period of oscillation. Answer in units of s. B)By what percentage does this differ from a 0.848m long

    asked by Anonymous on April 19, 2010
  3. Biology

    if the incidence of cystic fibrosis is 1 in 2500, what is the expected frequency of carriers for the CF allels? assume that this population is in Hardy-Weinberg equilibrium. I appreciate a hint to start this answering this problem. p^2 + 2pq + q^2 = 1 p +

    asked by Tammy on December 7, 2006
  4. chemistry

    Potash is composed mainly of potassium carbonate, K2CO3. If 1.000g of potash reacts with sulfuric acid to produce 145 mL of carbon dioxide gas at STP, what is the percentage of potassium carbonate in the marble sample? K2CO3 + H2SO4 ==> K2SO4 + H2O + CO2

    asked by Monique on November 29, 2011
  5. physics

    A shop prepares fresh takeout where 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. The shop sells the dinners at an 80% markup based on cost. They decide to offer a $1-off coupon in a newspaper ad so,

    asked by stacy on October 20, 2014
  6. Maths *have answer, want method* Urgent!

    Suppose that the blood pressure of the human inhabitants of a certain Pacific island is distributed with mean, \mu = 108 mmHg and standard deviation , \sigma = 6 mmHg. According to Chebyshev's Theorem, at least what percentage of the islanders have blood

    asked by Orla on April 13, 2013
  7. math

    Based on the data collected by the National Centre for health Statistics and made available to the public in the Sample Adult database, it was found that the percentage of adults who have at some point in their life been told that they have hypertension

    asked by lucia on August 11, 2016
  8. chemistry

    A 0.5917 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.5683 g. What is the mass

    asked by smith on March 3, 2014
  9. history

    1. What was described as the ' hardest work " slaves did ? ( 1point ) A. work in the rice fields B . Work in the tobacco fields C. Work in the lumber business D. Work loading and unloading ships in port 2. which of the follow best describes the social

    asked by crazygood on February 18, 2014
  10. Socialstudies

    1. What was described as the ' hardest work " slaves did ? ( 1point ) A. work in the rice fields B . Work in the tobacco fields***** C. Work in the lumber business D. Work loading and unloading ships in port 2. which of the follow best describes the social

    asked by Please help by checking my answers(I'm reposting) on February 4, 2016
  11. history

    1. What was described as the ' hardest work " slaves did ? ( 1point ) A. work in the rice fields B . Work in the tobacco fields C. Work in the lumber business D. Work loading and unloading ships in port 2. which of the follow best describes the social

    asked by lovey on February 24, 2014
  12. chemistry

    10 ml of 0.9% physiological solution sold in the pharmaceutical trade, was treated with an excess of precipitating solution of AgNO3 to 2m, leading to the formation of a white precipitate of silver chloride (AgCl), which weighed after the realization of

    asked by shania on August 18, 2018
  13. algebra 2 :(

    The distribution of jamal's high school grades by percentage of course credits is A=70%; b=20%; c=10%. What is jamal's grade point average if each a is worth 4 points; each b is worth 3 points; and each c is worth 2 points?

    asked by destiny on October 6, 2009
  14. math

    The interest rate on an equity line of credit was 7 and 5/8 % last month. This month the interest rate is 9 and 3/8 %. How many percentage points has the interest rate increased? Can someone help me please? 9.375% - 7.625% = 1.750 % = 1 3/4 %

    asked by Glenda on July 27, 2007
  15. chemistry

    Ethyl acetoacetate is a liquid. The value of the tautomeric constant for neat ethyl acetoacetate is Kt = .079. What is the percentage of the enol form in neat ethyl acetoacetate? please show all the work thanks!

    asked by howie on August 5, 2007
  16. Physical Chemistry

    A mole of air (80% Nitrogen, and 20% Oxygen by volume) at 298.15K is brought into contact with liquid water which has a vapor pressure of 3168Pa at this temperature. a) what is the volume of the dry air if the pressure is 1 bar? b) what is the final volume

    asked by Nate on February 7, 2012
  17. CHemistry

    a capsule of vitamin C.. a weak acid, is analyzed by titrating it with 0.425 M sodium hydroxide. it is found that 6.20 Ml of base is required to react with capsule weighing 0.628 g. what is the percentage of vitamin C (C6H8O6) in the capsule?( one mole of

    asked by Komal on October 23, 2008
  18. SCIENCE (correct I hope)

    Freshwater Resource Challenge: aquifer depletion overdrawing surface water saltwater intrusion Ocean Water Resource Challenge: Flooding (flood)is an overflow of an expanse of water that submerges land, a deluge. water pollution is the contamination of

    asked by scooby91320002 on September 13, 2008
  19. statistics

    To observe the effect of increasing sensitivity, assume a blood sugar screening level of 130 mg percent, with a sensitivity of 44.3% and a specificity of 99.0%. Set up a two by two table with the appropriate numbers in each cell. Calculate the following

    asked by jessy on November 21, 2016
  20. physics

    Азота массой м=14 г сжимают изотермически при температуре T=300 К от давления p₁=100 кПа до давления p₂=500 кПа. Определить: 1) изменение внутреиней

    asked by lisa on May 29, 2011
  21. Science

    1. Which of the following types of waste should not be recycled at home? a. expired medicines b. glass bottles c. papers d. plastic bags 2. Which of the following is NOT a method of disposing hazardous wastes? a. burying them in deep rock layers b.

    asked by Calvin on May 19, 2014
  22. chemistry college

    Many chemical salts come as hydrated crystals. That is, there is a specific ratio of water molecules associated with the salt crystals e.g. MgSO4.7H2O (called Magnesium sulphate heptahydrate FW = 246.5) has 7 water molecules to every Mg2+ and SO42- ion

    asked by Rebecca Byrne on September 27, 2018
  23. physics-kinetic theory

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 25, 2012
  24. chemistry

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 24, 2012
  25. physics

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 27, 2012
  26. chemistry/physics

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 25, 2012
  27. physics

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 24, 2012
  28. physics

    A glass bulb with radius 15 cm is filled with water vapor at a temperature of 500 K. On the exterior of the bulb a spot with area 2.0 mm^2 is placed in contact with liquid nitrogen. This causes the temperature of the spot to drop well below 0◦C. When the

    asked by sand on May 22, 2012
  29. statistics

    An air gap exists between fluids in a bottle and the cap of the bottle. At a firm producing olive oil, the gap is critical to the shelf life of their product. If the recent information reveals that the average gap is 9.46 mm with a standard deviation of

    asked by Deeptimaan on November 30, 2014
  30. Statistics

    At a certain university, 50% of all entering freshmen planned to major in a STEM (science, technology, engineering, mathematics) discipline. A sample of 36 freshmen is selected. What is the probability that the proportion of freshmen in the sample is

    asked by Obi on October 19, 2015
  31. chemistry

    1.How many atoms are in a sample of copper with a mass of 18.46 grams? 2.How many formula units are in a sample of salt with a mass of 67.69 grams? 3.How many molecules are in a sample of water with a mass of 44.99 grams? 4.What is the mass in grams of

    asked by grace on February 7, 2011
  32. chemistry

    1.How many atoms are in a sample of copper with a mass of 18.46 grams? 2.How many formula units are in a sample of salt with a mass of 67.69 grams? 3.How many molecules are in a sample of water with a mass of 44.99 grams? 4.What is the mass in grams of

    asked by grace on February 7, 2011
  33. Chemistry

    Which of the following explains why there are so many differences in the properties of peptides and proteins? A) several amino acid sequences are possible for proteins and peptides B) some proteins are enzymes while others are not C) proteins and peptides

    asked by Jake on May 29, 2014
  34. Chemistry

    1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high

    asked by Tiffany on October 22, 2014
  35. Chemistry

    1. The temperature of two substances with the same mass increases by 20 degrees Celsius. Which absorbs the most energy, the substance with the higher or lower specific heat? Explain 2. The human body is approximately 60% water. Explain how this high

    asked by Stephanie on October 22, 2014
  36. statistics

    if i have k = 36.86 +/- 4.78 and v = 113 +/- 9.92 both using 95% confidence limits and no true values of k or v given am i right in saying that accuracy cannot be determined and that v is a more precise measurement my question was to comment on what can be

    asked by jemmy on January 18, 2010
  37. statistics

    if i have k = 36.86 +/- 4.78 and v = 113 +/- 9.92 both using 95% confidence limits and no true values of k or v given am i right in saying that accuracy cannot be determined and that v is a more precise measurement my question was to comment on what can be

    asked by jemmy on January 18, 2010
  38. Biology

    4. The difference between an atom and and element is a. an element is made of atoms b. atoms are made of elements c. atoms are held together by covalent bonds d. none of the above C? 6. Which of the following is NOT an organic compound? a. ATP molecule b.

    asked by mysterychicken on January 20, 2010
  39. Biology

    4. The difference between an atom and and element is a. an element is made of atoms b. atoms are made of elements c. atoms are held together by covalent bonds d. none of the above C? 6. Which of the following is NOT an organic compound? a. ATP molecule b.

    asked by mysterychicken on January 21, 2010
  40. chemistry

    Magnesium reacts with HCl(aq) to form MgCl2 and H2(g) ____ Mg(s) + ____ HCl(aq) -----> ____ MgCl2(aq) + ____ H2(g) The following data was collected for the above reaction: Mg (g) 5% (m/v) HCl (ml) H2 gas produced (ml) 0.50 10 167 0.50 20 333 0.50 30 500

    asked by richard on January 30, 2010
  41. accounting

    Question 5: (50 points) E 5-11 Income (loss) recognition; percentage-of-completion and completed contract methods compared LO4 Brady Construction Company contracted to build an apartment complex for a price of $5,000,000. Construction began in 2006 and was

    asked by Abeam on October 8, 2008
  42. Math

    The usual price of a plasma television set was $8999. After a year, the selling price of the same type of plasma television set was $4200. Find the percentage decrease in price. Round off your answer to the nearest whole number.

    asked by Alys on October 4, 2016
  43. Science

    In a praticular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? A. 25% B. 50% C. 75% D.

    asked by Anonymous on October 15, 2014
  44. Science

    In a praticular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? A. 25% B. 50% C. 75% D.

    asked by Anonymous on October 15, 2014
  45. Science

    In a praticular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? A. 25% B. 50% C. 75% D.

    asked by Anonymous on October 15, 2014
  46. Economics

    P=MR+$750 TC =2,500,000+500q+0.005Q^2 (squared) Mc =500+0.01Q Calculate profit maximizing level Calculate the company's optimal profit and optimal profit as a percentage of sales revenue Can anyone help here I am lost

    asked by Jeff on April 6, 2007
  47. math

    A company's sales revenue decreased by 15% from one operating period to the next. Assuming no change in the prices of its inputs and outputs, by what percentage did: Fixed costs change? Unit variable costs change? Total variable costs change?

    asked by Di on May 4, 2014
  48. math

    At a boutique,an evening gown is marked at a profit of 40% on the cost price. It is sold in a sale at 20% discount. (a)Find the actual profit as a percentage of the coast price. (b)If a customer bought it for $448, find the actual profit

    asked by Anonymous on April 12, 2014
  49. chemistry

    The mass percentage of chloride ion in a 29.00 sample of seawater was determined by titrating the sample with silver nitrate, precipitating silver chloride. It took 42.42 of 0.2998 silver nitrate solution to reach the equivalence point in the titration.

    asked by Cecelia on October 4, 2011
  50. math

    the gross domestic product (GDP) of a certain country is growing at a constant rate. In 2009 the GDP was 125 billion dollars , and in 2011 it was 155 billion dollars. At what percentage rate will the GDP grow in 2014?

    asked by TOM on March 31, 2018
  51. statistics

    The heights of American women aged 18 to 24 are normally distributed with a mean of 66 inches and a standard deviation of 2.5 inches. In order to serve in the U.S. Army, women must be between 57 inches and 79 inches tall. What percentage of women are

    asked by Anonymous on August 21, 2011
  52. statistics

    The heights of American women aged 18 to 24 are normally distributed with a mean of 66 inches and a standard deviation of 2.5 inches. In order to serve in the U.S. Army, women must be between 57 inches and 79 inches tall. What percentage of women are

    asked by Ann on August 19, 2011
  53. math

    a spherical ball requires approximately 900cm2 of material in order to make it. Find the volume of the ball : The volume is 2579.325cm3 NOW The ball is sold in a rectangular prism shaped box. What percentage of the volume of the box is taken up by the

    asked by cynthia on September 4, 2008
  54. managerial accounting

    32) Sarker manufacturing company produces and sells 40,000 units of a single product. Variable costs total $80,000 and fixed costs total $120,000. If each unit is sold for $8, what markup percentage is the company using?

    asked by Anonymous on November 26, 2011
  55. statistics

    the authors's generac generator produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volts, and the voltages have a bell-shaped distribution. using the empiral rule, what is the percentage of voltage amounts between 124.4 and

    asked by marie on September 19, 2011
  56. Law

    According to Robert Nozick, the state is justified to tax a citizen (even against his or her will) if: a) the revenues support things like healthcare and education, which improve the life-prospects of all citizens. b) all citizens are required to pay the

    asked by Anonym on April 11, 2013
  57. Chemistry

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked by Isabella on September 9, 2015
  58. CHEMISTRY

    Hello there! I was wondering if you could check my answers for me? I was having trouble and I finally understand. 1. Indicate the oxidation number of carbon and sulfur in the following compounds. A) CO= +2 C) Na2CO3= +4 E) CH4= -4 G) SO2= +4 I) Na2SO4= +6

    asked by Isabella on September 10, 2015
  59. Math

    Carol has a collection of 100 stamps. The graph below shows the percentage of stamps she has from each country. France=24% Italy=25% England=22% Norway=29% How many of Carol's sta,ps are from Noraw than from France? A. 5 stamps B. 24 stamps C. 29 stamps D.

    asked by Anonymous on April 6, 2015
  60. chemistry

    a chemist reacts 8.85g or iron with an excess oh hydrogen chloride to form hydrogen gas and iron(II)chloride.calculate the theoretical yield and the percentage yield of hydrogen if 0.27g H2 are collected

    asked by sammy on March 7, 2010
  61. chemistry

    a sample of indium chloride is known to be contaminated with sodium chloride. The contaminated sample weighs 2.87 g. When the contaminated sample is treated with excess AgNO3(aq), 5.79 grams of AgCl(s) are obtained. What is the percentage by mass of InCl3

    asked by Anonymous on November 22, 2010
  62. 8th grade Algebra

    Carol has a collection of 100 stamps the graph below shows the percentage of stamps she has from each country how many more of Carols stamps are from italy than from france? France: 24%, England:22%, Norway:29%, Italy:25%. A)22 stamps B)25 stamps C)47

    asked by Please help/check on March 23, 2016
  63. Chemistry

    Ba(NO3)2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaNO3(aq) An experiment was begun with 75.00 g of Ba(NO3)2 and an excess of Na2SO4. After collecting and drying the product, 64.45 g of BaSO4 was obtained. Calculate the theoretical yield and percentage yield of

    asked by Pickles on April 14, 2018
  64. Maths

    The length and width of a rectangular projector screen in a small theatre is 200% more than the length and width of a television screen in the same room. How much bigger is the area of the screen than that of the television? Give your answer as a

    asked by Fred on February 26, 2018
  65. Chemistry

    8.4 g of a mixture of potassium hydroxide and potassium chloride were made up of 1 litre of aqueous solution. 20 cm of this solution required 24.2 cm of 0.1 m nitric acid for neutralisation. calculate the percentage by mass of potassium chloride in the

    asked by Doris on September 23, 2016
  66. Science

    In a particular breed of cattle, a black coat is dominant over a red coat. If a cow with a red coat is crossed with a black bull that is heterozygous for coat color, what percentage of their offspring would you expect to be black? 25 50 75 100

    asked by Steve on October 22, 2013
  67. Physics

    A scuba diver must decompress after a deep dive to allow excess nitrogen to exit safely from his bloodstream. The length of time required for decompression depends on the total change in pressure that the diver experienced. Find this total change in

    asked by Marie on July 3, 2012
  68. Biology

    37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the growing chain according to

    asked by mysterychicken on February 23, 2010
  69. Biology

    37. Hyphae a. increase the surface area-to-volume ratio of the fungus b. have slender filaments c. allow for efficient uptake of nutrients d. all of the above D? 38. In which process do tRNA molecules attach amino acids to the growing chain according to

    asked by mysterychicken on February 23, 2010
  70. phy

    (Q1)the temperature at which the tungsten filament of a 12v and 36w lamp operates is 1730c.If the temperature coefficient of resistance of tungsten is 0.006/k, find the resistance of the lamp at room temperature of 20c

    asked by kate on July 3, 2013
  71. AP Physics

    Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this

    asked by Danny on December 3, 2009
  72. chem, grade 12

    I'm having a hard time with this... ...I need help. I want to learn... Question 1) The electrolyte from a car battery has H2S04 (aq) concentration of 4.5 per mol and a density of 1.18g per mol. What is the percentage by mass of H2S04 in the electrolyte?

    asked by atriletz on January 27, 2007
  73. Statistics

    In a certain city, there are 10,000 persons age 18 to 24. A simple random sample of 500 such persons is drawn, of whom 200 turn out to be currently enrolled in college. Find a 90% con¯dence interval for the percentage of persons age 18 to 24 in the city

    asked by Teddy on May 16, 2011
  74. Physics

    A train on a mountain railway is carrying 200 people of average mass 70kg up a slope at an angle of 30° to the horizontal and at a speed of 6.0 m s–1. The train itself has a mass of 80 000 kg. The percentage of the power from the engine which is used to

    asked by Me on June 8, 2014
  75. Physics

    Hi im new so maybe one of you can help me understand this question, can't find it anywhere in the book. A person weighs 723N in air and has a body-fat percentage of 29.3% . What is the overall density of this person's body? What is the volume of this

    asked by Danny on December 4, 2009
  76. math

    can you please check my answers? 12, 20, and 35 LCM =420 1/3+5/12+4+5=60 LCD 13/15-11/20=19/60 What is the combined price for a 1/2-in. sheet and a 5/8-in. sheet? 1/2PRICE $17.88 5/8 PRICE$19.13 =37.01 1 1/15+3 3/10-2 4/5=1 17/30 5 1/3+2 1/4+3 1/2=11 1/12

    asked by p on September 11, 2009
  77. Math

    What percentage of the total students chose skateboarding? Chart Walking Boys= 3 Girls=6 Biking Boys=5 Girls=3 Skateboarding Boys=2 Girls=1 A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you

    asked by Nikita on April 1, 2015
  78. math

    The physical plant at the main campus of a large state university receives daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 58 and a standard deviation of 11. Using the

    asked by Anonymous on December 1, 2015
  79. Chemistry

    What are the independent and dependent variables when determining the percentage water in hydrated copper sulfate salts, while designing the experiment? The question states 'Select sensible amounts to make the independent variable the limiting reagent and

    asked by Veronica on March 8, 2010
  80. Chemistry

    A 0.41 g sample of limestone was dissolved in HCl and all the calcium in the limestone was converted to Ca2+(aq). The solution was treated with excess ammonium oxalate, (NH4)2C2O4(aq), and it was found that 3.0 g of calcium oxalate, CaC2O4(s) was

    asked by Bob on September 20, 2012
  81. maths

    if i have k = 36.86 +/- 4.78 and v = 113 +/- 9.92 both using 95% confidence limits and no true values of k or v given am i right in saying that accuracy cannot be determined and that v is a more precise measurement my question was to comment on what can be

    asked by lucy on January 19, 2010
  82. Algebra

    In a sports poll, 53% of those surveyed believe their high school football team will win the state championship. The poll shows a margin of error of +-5 percentage points. Write and solve an absolute value inequality to find the least and the greatest

    asked by Jack on September 25, 2014
  83. Social Studies

    What percentage of the world's earthquakes and active volcanoes occur on the "Ring of Fire"? 1) *10% 2) *20% 3) *50% 4) *80% My Answer. Is It Correct? Please Be Honest. #4: 80% The name of Earth's single, huge continent from over 250 million years ago is

    asked by !!!!Please Answer Ms.Sue The Real One!!!! on December 4, 2012
  84. chemistry

    There are four main methods of making salts: Acid + Metal, Acid + insoluble base, Acid + alkali and solution of salt A + solution of salt B. a. a student wanted to make some sodium sulfate. i. which method would be best to use? ii. why? iii. which

    asked by Chloe on April 6, 2008
  85. statistics

    In a gallup poll of 1,038 adults, 540 said that second hand smoke is very harmful. What is the percentage of adults who said second hand smoke is very harmful? Is the answer 52%

    asked by Brooke on April 28, 2010
  86. Math

    After the first 41 games of the baseball season, the Red Sox have a winning percentage of 0.585 and the Yankees have 0.512. How many games behind the Red Sox are the Yankees?

    asked by Katie on March 29, 2011
  87. Statistics

    In a Gallup poll of 1,038 adults, 540 saud that second-hand smoke is very harmful. What is the percentage of adults who said second-hand smoke is very harmful?

    asked by Liz on February 13, 2010
  88. 8th grade math

    A company reported that it made a profit of 8% as a percentage of sales and that its sales revenue was $25,000. How much profit did the company make? my answer: $2,000

    asked by Elizabeth on November 8, 2010
  89. statistics

    a sample of men's heights was taken. The average height was 68.5 inches, the SD was 1.95 inches. Use the normal curve to estimate the percentage of men with heights between 69 inches and 70 inches.

    asked by brenda on February 8, 2014
  90. Science

    The total resistance of a series circuit is 500 ohm. What percentage of the total voltage appears across a 22 ohm resistor in the series circuit?

    asked by Treavonne on January 15, 2013
  91. stats

    In a gallup poll of 1,038 adults, 540 saif that second hand smoke is very harmful. What is the percentage of adults who said second hand smoke is very harmful?

    asked by cole on May 11, 2011
  92. Chemistry

    A student prepared a 0.03M solution of formic acid (HCHO2) and measured its PH at 25oc and it was found to be 4.67. Calculate Ka for formic acid at this temperature.what percentage of the acid is ionized in this 0.03M solution.

    asked by Sam on November 16, 2017
  93. Statistics

    You conduct a study on eye color and you questioned 550 people a hundred and ten of them have brown eyes and 44% of them have blue eyes what percentage of the people you question has blue or brown eyes

    asked by Telika on April 30, 2016
  94. math

    if 1790 maga watts of power,out of 3000 mega watts generated by a power utility, reach the destination, what percentage of the generated power reaches its destination. please show work

    asked by paully on November 4, 2010
  95. chemistry

    A 2.000g sample of silver alloy was dissolved in nitric acid and then precipitated as AgBr. After drying, the sample of silver bromide weighed 2.000g. Calculate the percentage of silver in the alloy.

    asked by Cindy on October 28, 2010
  96. math,help, algebra

    okay i have a table it reads. It has 4 colums Title population of Europe by age groups (population is in thousands) First colum it reads down like this age 0-14 age 15-64 age 65+ age 75+ total second colum it reads (In 1950) 143,175 359,162 44,981 14,553

    asked by Jasmine20 on January 27, 2007
  97. Organic Chesmitry

    The purpose of a gas trap in the Diels-Alder reaction set up is to A. Trap oxygen gas B. Trap the diels alder product C. Trap sulfur dioxide gas D. Trap carbon dioxide gas E. Trap nitrogen gas

    asked by nilee on March 6, 2009
  98. Economics

    I thinks i got the problem right this time P=MR=$750 TC =2,500,000+500q+0.005Q^2 (squared) Mc =500+0.01Q Calculate profit maximizing level Calculate the company's optimal profit and optimal profit as a percentage of sales revenue Can anyone help here I am

    asked by Jeff on April 6, 2007
  99. Finance

    Sarker manufacturing company produces and sells 40,000 units of a single product. Variable costs total $80,000 and fixed costs total $120,000. If each unit is sold for $8, what markup percentage is the company using? A. 60.0% B. 160% C. 75% D. 133%

    asked by Anonymous on November 26, 2011
  100. chemistry

    When a 6.79-g mixture of methane, CH4, and ethane, C2H6, is burned in oxygen at constant pressure, 369 kJ of heat is liberated. What is the percentage by mass of CH4 in the mixture? The standard enthalpies of combustion for CH4 and C2H6 are -890.3 kJ mol-1

    asked by abby on March 1, 2014