1. Math

    A man sold an item for three thousand, six hundred naira if he had sold the item for two thousand naira what would have been his percentage loss.

    asked by Aderonke on January 15, 2017
  2. Math

    The ratio of the number of red and blue candies in a jar is 7:8. If the percentage increase in the number of red and blue be 20% and 10% respectively , what will be the new ratio?

    asked by Noor on August 26, 2014
  3. statistics

    Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

    asked by ali on November 26, 2015
  4. statistics(business)

    Large group of students took a test in English and the final grades have a mean of 75 and a standard deviation of 8. If we can approximate the distribution of these grades by a normal distribution. What percentage of the students (ii) Should pass the test

    asked by ali on November 26, 2015
  5. Statistics

    Suppose the weights of Farmer Carl's potatoes are normally distributed with a mean of 7.9 ounces and a standard deviation of 1.1 ounces. Suppose Carl bags his potatoes in randomly selected groups of 6. What percentage of these bags should have a mean

    asked by Kyle on November 3, 2017
  6. science

    Consider the following reaction: CaCO3(s) --> CaO(s) + CO2(g) A mixture of calcium oxide (CaO) and calcium carbonate (CaCO3) had a mass of 15.08 g and was heated to above 840 oC. After heating, 9.83 g of solid was left. What is the mass percentage of

    asked by CHAN on December 30, 2014
  7. Chemistry

    Ammonium ion (NH4^+) reacts with nitrite ion (NO2^-) to yield nitrogen gas and liquid water. The following initial rates of reaction have been measured for the given reactant concentrations. Expt. # [NH4^+] [NO2^-] Initial rate (M/hr) 1 0.010 0.020 0.020 2

    asked by Anonymous on February 7, 2013
  8. economics help!!!

    5.1998 Price Quantity cauliflower $200 100 broccoli $ 75 50 carrots $ 50 500 Total $325 Weight of each good weight for cauliflower 200/325= 0.61532 weight for broccoli 75/325= 0.2307692 weight for carrots 50/325=0.1538461 Prices in the base year

    asked by shelby on September 27, 2006
  9. chemistry Please who helps me stpe by step

    2gm of mixture hydrated sodium carbonate na2c03 /OH20 and sodium bicarbonate was dissolved in water and made up to 250cc. 25cc of this solution was titrated, using methyl orange as indicator and 22.5cc of 0.087N hcl were required for neutralization.

    asked by ken on June 21, 2014
  10. Physics- hard problem

    A 14000 N automobile travels at a speed of 40 km/h northward along a street, and a 7000 N sports car travels at a speed of 62 km/h eastward along an intersecting street.(a) If neither driver brakes and the cars collide at the intersection and lock bumpers,

    asked by Bryan on December 20, 2013
  11. math lit

    The price of a apple increase from R2,40 to R3,72. What is the percentage increase in the price of the apple?? If an exam is 2 and a half hours long and its out of a total of 100 marks A)how many mintutes do you have in whic to complete the paper?? B) at

    asked by Khabo on March 13, 2012
  12. Chemestry

    A 5.000g sample of a dry mixture of potassium hydroxide, potassium carboate and potassium chloride is reacted with 0.100 L of 2.00-molar HCl solution. A 249.0 mL sample of dry carbon dioxide gas, measured at 22.0 degree Celsius and 740.0 torr, is obtained

    asked by Catherine on May 13, 2016
  13. Statistics

    Suppose that the weight of male babies less than 2 months old is normally distributed with mean 11.5 pounds and standard deviation 2.7 pounds. A sample of 36 babies is selected. What is the probability that the average weight of the sample is less than

    asked by Obi on October 14, 2015
  14. Chemistry

    A 0.200 g sample containing Cu is dissolved, and a diethyldithiocarbamate coloured complex is formed. The solution is then diluted to 50.0 mL and the absorbance measured as 0.260. A 0.500 g sample containing 0.240% Cu is treated in the same manner, and the

    asked by Kurt on January 19, 2015
  15. Chemistry

    The given actual molarity of sulfuric acid was .08M. How do I calculate the absolute error and percentage error? Your question isn't complete? Did you experimentally measure the molarity? Or was it somthing else? If you measure the value experimentally,

    asked by Katelyn on May 7, 2007
  16. ECONOMIC

    The income elasticity for most staple foods, such as wheat, is known to be between zero and one. As incomes rise over time, what will happen to the demand for wheat? What will happen to the quantity of wheat purchased by consumers? What will happen to the

    asked by JIM on June 5, 2015
  17. Chemistry

    When people have indigestion or "heartburn" they often take an antacid to reduce the amount of stomach acid (hydrochloric acid). Two antacids are Mylanta (magnesium hydroxide) and Titralac (calcium carbonate). Jimmy prefres to take Mylanta because Titralac

    asked by Nicole on November 18, 2012
  18. Science

    Could you please help me with this question; Scientists in the future hope to land a mannea spacecraft on Mars in order to survive on this planet problems associated with lack of air, water, food and shelter must be faced. Select 2 of these problems and

    asked by Sarah on June 21, 2007
  19. ECONOMICS

    Author are typically paid a royality which is a fixed percentage of revenue; a common figure 10% of sales revenue. Show that the price desired by an author is always less than the price desired by a profit maximising publisher. What is the elasticity of

    asked by ZIO on May 5, 2008
  20. Economics

    Author are typically paid a royality which is a fixed percentage of revenue; a common figure 10% of sales revenue. Show that the price desired by an author is always less than the price desired by a profit maximising publisher. What is the elasticity of

    asked by Zio on May 4, 2008
  21. STATISTICS

    t has been claimed that 65% of homeowners would prefer to heat with electricity instead of gas. A study finds that 60% of 2000 homeowners prefer electric heating to gas. Can we conclude that the percentage who prefer electric heating differs from 65%? Use

    asked by Mary on December 4, 2015
  22. math

    A businessman makes a profit of 20% when he sells a carpet for Ksh 36 000. In a trade fair he sold one such carpet for Ksh 33 600. Calculate the percentage profit made on the sale of the carpet during the trade fair.

    asked by kd on October 31, 2018
  23. chemistry

    how do u calculate the percentage of water of cystallisation in FeSO4.7H2O percent water= 7*molmassH20/molmassFeSO4.7H2O * 100 now to get the mole mass of FeSO4.7H2O * 100, it is the sum of the atomic mass of one Fe, one S, four O, 14H, and 7 O.

    asked by janet on March 22, 2007
  24. prealgebra/ check answer please

    John who is an amateur golfer spends 3 hours every day practicing golf. What percentage of his waking hours does John spend practicing golf if he sleeps 9 hours a day? 24-9=15 3/15= 0.2% Answer I am unsure if the steps are right

    asked by toni on June 23, 2012
  25. statistcs

    The authors generac generator produces voltage amounts with a mean of 125.6 volts and a standard deviation of 0.3 volt. using the Chebyshev's theorem, what do we know about the percentage of voltage amounts that are within 3 standard deviations of the

    asked by marie on September 19, 2011
  26. maths for business Help!!!

    Jacson purchased a house for Birr 50,000. He made an amount of down payment and pay monthly Birr 600 to retire the mortage for 20 years at annual interest rate of 24% compounded monthly. Find mortage down payment interest charged percentage of down payment

    asked by james on June 10, 2017
  27. question

    Mini Makers, a small manufacturer of action figures, is formulating a budget for next year's promotional activities. The company decides to budget $50,000 for promotional expenses (an amount equal to its nearest competitor's allotment.) Mini Makers is

    asked by matt on November 11, 2014
  28. stats

    A set of data is normally distributed with a mean of 200 and standard deviation of 50. • What would be the standard score for a score of 250? • What percentage of scores is between 200 and 250? • What would be the percentile rank for a score of 250?

    asked by Dawn on October 9, 2012
  29. Money

    Sarah and Billy are waiters at Jill's Grill. During the night shift, Sarah makes $86.00 in tips, while Billy makes $102.00. What percentage of Billy tips did Sarah make? (a) 82% (b) 84% (c) 86% (d) 88%

    asked by Pat on March 15, 2014
  30. statistics

    If a milk cow in California produced a mean of 1,875 pounds of milk per month, what percentage of production would that cow be in compared to the overall production per milk cow in California from 1990 through 2005?

    asked by Bobby on August 19, 2014
  31. math

    JAB Consulting has a $42,500 line of credit which charges an annual percentage rate of prime rate plus 5.5%. Their starting balance on May 1 was $7,800. On May 5 they borrowed $4,700. On May 13 the business made a payment of $2,000, and on May 19 they

    asked by Opio on May 16, 2018
  32. Managerial Economics

    I need assistance with the following question: A researcher estimated that the price elasticity of demand for automobiles in the United States is -1.2, while the income elasticity of demand is 3.0. Next year, U.S. auto makers intend to increase the average

    asked by Talia on November 8, 2006
  33. Damon check step by step

    25g of a sample of ferrous sulphate was dissolved in water containing dilute h2s04 and the volume made up to one litre. 25ml of this solution required 20ml of N/10 kmn04 solution for complete oxidation. Calculate the percentage of f2s047h20 in the sample

    asked by Fai on January 3, 2014
  34. math

    Nick has a revolving department store credit card account with an annual percentage rate of 15%. Last month’s balance on the account was $423.78. During the current month, he made pur- chases totaling $123.42 and made a payment of $100. The store uses

    asked by lauren on November 18, 2013
  35. Chemistry

    A student places 0.025 moles of solid sulfur and 0.100 moles of nitrogen monoxide gas in a closed 1.00L container and 0°c for several days. Calculate the number of molecules of NO in the 1.00L container after equilibrium is reached, given the following

    asked by nns40760 on December 1, 2014
  36. Chemistry

    A 19.3L expandible container is filled in a room where the pressure is 761mmHg. It is filled with 600.4mmHg nitrogen, 108mmHg oxygen, 32.1 mmHg water vapor. The rest of the pressure is made up by carbon dioxide. The temperature is 20.3°C a. What is the

    asked by Anonymous on September 27, 2016
  37. Chemistry

    A 19.3L expandible container is filled in a room where the pressure is 761mmHg. It is filled with 600.4mmHg nitrogen, 108mmHg oxygen, 32.1 mmHg water vapor. The rest of the pressure is made up by carbon dioxide. The temperature is 20.3°C a. What is the

    asked by Anonymous on September 28, 2016
  38. AP Physics

    In a period of 2s, 4.8E23 nitrogen molecules strike a wall area of 8.6 cm^2. If the molecules move at 308 m/s and strike the wall head-on in a perfectly elastic collision, find the pressure exerted on the wall. The mass of one N2 molecule is 4.68E-26kg.

    asked by JL on November 15, 2009
  39. maths --plse help me..

    20% of boys in an exmaination were not appeared,70% of appeared boys passed the examination.What percentage of total registered boys for the exmaination were failed.If absent boys are considered as failed

    asked by Anonymous on December 20, 2012
  40. percentage

    Karen took 1h 45m to drive from town a to town b.she took another 25m to drive town b to town c.after that,she drove back to town a.the journey from town a to town c and then back to town a took 3h 35m. find the percentage of the time she spent driving

    asked by Da S on February 13, 2012
  41. Maths

    Karen took 1hour 45mins to drive from Town A to Town B. She took another 25 mins drive from Town B to Town C. After that, she drove back to Town A. The journey from Town A to Town C and then back to Town A took 3h and 3mins. Find the percentage of time she

    asked by billygoatman on February 23, 2012
  42. Macroeconomics

    Suppose the economy has been experiencing zero inflation and five percent unemployment for several years. The government decides to lower the unemployment percentage by generating some inflation. You need to do the following: 1)create a graph showing what

    asked by Joe on May 24, 2010
  43. statistics

    the birth of healthy, full term infants in the United States is nearly normally distributed. The mean weight is 3,500 grams, and the standard deeviation is 500 grams. (a) what percentage of the healthy newborns will weigh more than 3,250 grams? (b) what

    asked by ryee on April 24, 2011
  44. Statistics

    5. Scores on a recent national statistics exam were normally distributed with a mean of 80 and a standard deviation of 6. a. What is the probability that a randomly selected exam will have a score of at least 71? b. What percentage of exams will have

    asked by Zac on March 5, 2012
  45. please help

    In cell D21, type the formula to calculate the % change from January to February. That formula is: =(J18-E18)/ABS(E18). Format the result in the Percentage style and decrease the decimal places if necessary to round the result to the nearest whole percent

    asked by kayla on May 26, 2011
  46. Chemistry - Correction

    I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following

    asked by Robert on July 3, 2012
  47. Chemistry

    I just wanted to be sure if my answers make any sense. Thank you; For the reaction of ammonia: N2(g) + 3H2(g) --> 2NH3(g) suppose equilibrium has been established. Explain how and why the position of equilibrium will shift in response to the following

    asked by Robert on July 2, 2012
  48. Chem (edited)

    The electrolyte from a car battery has H2S04 (aq) concentration of 4.5 per mol per litre and a density of 1.18g per ml What is the percentage by mass of H2S04 in the electrolyte? do you mean 4.5 mol per liter? This has absolutely no meaning: concentration

    asked by atriletz on January 27, 2007
  49. math

    There are 6 cyclists with red mountain bikes and 4 with green mountain bike at the race, what was the ratio of red to green mountain bikes? Write your answer as common fraction, a decimal fraction and a percentage

    asked by luthando on February 17, 2016
  50. Math

    one Percentage increase / decrease formula in excel that full all the conditions that are mentioned below 2012 2011 1 0 0 2 0 500 3 500 0 4 500 1000 5 1000 500 6 500 (1000) 7 (1000) 500 8 (500) (1000) 9 (1000) (500) Dear its urgent

    asked by Muhammad Ashfaq on October 31, 2012
  51. Math

    one Percentage increase / decrease formula in excel that full all the conditions that are mentioned below 2012 2011 1 0 0 2 0 500 3 500 0 4 500 1000 5 1000 500 6 500 (1000) 7 (1000) 500 8 (500) (1000) 9 (1000) (500) Dear its urgent

    asked by Muhammad Ashfaq on October 31, 2012
  52. math

    Total hours: 42 (including 4 hrs sick leave, 6 hrs travel) Week 2 — Total hours: 46 (including 5 hrs travel)What percentage of the recorded time did the worker spend traveling?

    asked by nita on July 18, 2012
  53. Civics

    which would you most likely find a smaller a smaller amount of in a governments budget than in a personal household budget? a. the percent of total income that goes towards national defense and health care b. the percentage of people affected by the budget

    asked by HELP(civics)!!!!!!!!! on June 8, 2016
  54. English

    State the meaning of the word expedite as it is used in the following sentence. Then, identify the context clue that you used to understand the meaning: definition clue, synonym, example clue, contrast clue, or inference clue. The majority of the elected

    asked by Gwen on December 10, 2013
  55. chemistry

    a sample of ethanol was prepared by reacting 9.2cubic centimetres of ethanol(density 0.8grams/cubic centimetre)with an acidified solution containing 11grams of sodium dichromate(Na2 Cr2 O7) the reaction is represented by the following equation: C2 H5 OH+K2

    asked by Mnashe on August 22, 2018
  56. Chemistry

    Bromine has two isotopes, Br- 79 and Br- 81. The relative atomic mass of bromine is 79.9. CALCULATE THE PERCENTAGE of Br-79 atoms in a sample of bromine. PLease help i'm really stuck Someone said: The total for 79 and 81 is 100% and the total for fraction

    asked by 0oooooooo0 on September 30, 2017
  57. Statistics

    A planner wants to determine the percentage of students who will attend summer classes. She surveys 32 students and finds that 12 will return for summer classes. Construct a 90% confidence interval estimate for the proportion of students who will return

    asked by Judy on December 12, 2011
  58. Math ---HELP!!!!!

    A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean

    asked by angela on May 5, 2016
  59. statistics

    A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean

    asked by phia on April 16, 2015
  60. Math

    A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours. Assume that a random sample of 40 mechanics is selected and the mean

    asked by angela on May 5, 2016
  61. Statistics

    The ratio of brown M&M’s in a bag is stated by the candy company to be 56%. If a random sample of 500 bags is selected, determine the probability that the sample proportion of random bags of M&M’s selected has a percentage of brown between 51% and 59%

    asked by Kim on November 23, 2015
  62. stats

    how to work this math problemAn archaeologist has 250 animal bone fragments from prehistoric site -of these 195 are white-tail deer bones. Construct the 90% confidence interval for the percentage of bone fragments from this site that are from white-tail

    asked by Donna on April 17, 2011
  63. Statistics

    A 2014 Gallup Poll of 1028 adults found that 216 thought abortion should be illegal in all circumstances, a decrease of 2 percentage points from the record high in 2009. We are 95% confident that between ___% and ___% of all adults thought abortion should

    asked by Anonymous on February 1, 2018
  64. Statistics

    A 2014 Gallup Poll of 1028 adults found that 216 thought abortion should be illegal in all circumstances, a decrease of 2 percentage points from the record high in 2009. We are 95% confident that between ___% and ___% of all adults thought abortion should

    asked by Anonymous on February 1, 2018
  65. Physical science

    In a recipe for lemonade it gives the ingredients as 1 cup of water,1.5 tablespoons lemon juice, plus sugar and salt.Not taking into account the sugar and salt, what is the concentration of lemon juice in the mixture as a percentage by volume? 16

    asked by Papaya on September 20, 2017
  66. maths

    a wholesellor allows a discount of 20% on the list price to a retailor . the retailor sells at 5% discount on the list price . if a customer paid ruppes38 for an article , what profit is made by the retailor ? find also the retailor's percentage profit for

    asked by tina !!! help me please on June 29, 2013
  67. reading help

    Vocbulary Words: Assist Assume Bluntly Commission Competitors Disapprove Earnings Exasperated Extinguished Humiliating Patron Percentage Personnel Rectify Regardless Worthwhile Use each clue to write a vocabulary word. a. not disadvantageous but, b. not

    asked by John Dosley on March 14, 2015
  68. Public High School AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on July 2, 2010
  69. Physics

    A 15500 N automobile travels at a speed of 41 km/h northward along a street, and a 7000 N sports car travels at a speed of 65 km/h eastward along an intersecting street. a)If neither driver brakes and the cars collide at the intersection and lock bumpers,

    asked by Kelsey on December 11, 2010
  70. chemistry

    Iron can be produced by the reduction of iron(III) Oxide by carbon monoxide: Fe2O3 + 3CO -> 2FE +3CO2 a) what maximum mass of CO2 could be produced from the complete reduction of 14.7g of Fe2O3? b) if 8.73g of CO2 gas was actually collected, what

    asked by Emily on February 16, 2016
  71. AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on July 2, 2010
  72. Public High School AP Biology

    I got a question that comes from the 1990 released test #61 that I'm completley lost on 61. In a population that is in Hardy-Weinberg equilibrium, the frequency of a recessive allele for a certain hereditary trait is 0.20. What percentage of the

    asked by Kate on June 23, 2010
  73. statistics

    In a recent survey in a Statistics class, it was determined that only 60% of the students attend class on Thursday. From past data it was noted that 98% of those who went to class on Thursday pass the course, while only 20% of those who did not go to class

    asked by bilal on November 21, 2011
  74. Business Stats

    In a recent survey in a Statistics class, it was determined that only 60% of the students attend class on Fridays. From past data it was noted that 98% of those who went to class on Fridays pass the course, while only 20% of those who did not go to class

    asked by Jada on March 14, 2013
  75. Chemistry

    someone help pls!! percentage of ethanol in the "blood" sample on a v/v basis is 0.0143% v/v. is the "blood" sample analysed over the limit for driving? (legal limit is 80mg alcohol per 100mL blood. assume the density of ethanol is 0.785g/mL and the

    asked by Becky on October 21, 2012
  76. Biology

    A student wishes to prepare 300 mL of 0.25 M sucrose. He puts 25.7 g of sucrose in a beaker and then adds 300 mL of dH2O. The total volume of the solution after the sucrose has been dissolved is 330 mL. a) What did he do wrong when preparing his solution?

    asked by Ki on September 14, 2014
  77. math

    There were 60 basketball players in the school team last year. This number of basketball players increases to 80. What is the percentage in the number of basketball players?

    asked by Saba on April 10, 2016
  78. Chemistry

    Asprin(acteyl salicylic acid) can be synthesized by reacting acetic anhydride with salicylic acid. Assume the reaction was run and 1.75 grams of a solid product was obtained. Recrystalization of the 1.75 g mixture yielded 1.50 g of asprin. a. What was the

    asked by teetee on March 8, 2012
  79. statistics

    5. A soft drink dispensing machine uses paper cups that hold a maximum of 12 ounces. The machine is set to dispense a mean of 10 ounces of the drink. The amount that is actually dispensed varies. It is normally distributed with a standard deviation of one

    asked by Sarah on September 16, 2014
  80. physics

    A sled is being pulled across a horizontal patch of snow. Friction is negligible. The pulling force points in the same direction as the sled's displacement, which is along the +x axis. As a result, the kinetic energy of the sled increases by 47.5 percent.

    asked by Anonymous on March 11, 2014
  81. Stats need help

    Use the empirical rule to solve the problem. The systolic blood pressure of 18 yr. old women is normally distributed with a mean of 120 mmHg (millimeters of Mercury) and a standard deviation of 14 mmHg. What is the percentage of 18 yr. old women that have

    asked by John on July 6, 2017
  82. Chemistry

    A calcium sample weighting 607.4 mg was precipitated as oxalate and calcined calcium carbonate giving 246.7 mg. What the percentage of calcium in the sample? Calcium molecular weight: 40.078 g/mol CaCO3 molecular weight: 100 g/mol

    asked by MONICA on November 2, 2016
  83. Math

    The systolic blood pressure of 18-year-old women is normally distributed with a mean of 120 mm Hg and a standard deviation of 12 mm Hg. What percentage of 18-year-old women have a systolic blood pressure that is within 3 standard deviations of the mean on

    asked by angela on May 4, 2016
  84. chemistry

    These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the

    asked by s on March 16, 2011
  85. chemistry

    These are short and simple. :) I've included my answers, tell me if I am wrong please. CH3 is attached to a carbon on a pentane ring. Is the hybridization of the carbon sp3? NH connects a benzene ring to two benzene rings. Is the hybridization of the

    asked by s on March 16, 2011
  86. macroeconomics

    Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your work. =) Use the circular flow diagram to

    asked by Writeacher on March 2, 2007
  87. civics

    which would you most likely find a smaller a smaller amount of in a governments budget than in a personal household budget? a. the percent of total income that goes towards national defense and health care b. the percentage of people affected by the budget

    asked by Nani on June 1, 2015
  88. Ap chem question 2 related to the first question

    Calculate the volume of gas you would expect to be evolved in X mol of magnesium were reacted with an excess of HCl at standard conditions. I'm going to tell you what my father told me...LOOK IT UP thanks for the unnecessary comment! Mg + 2HCl ==> MgCl2 +

    asked by Justyna on October 23, 2006
  89. Chemistry Equation(again)

    What I wrote is the balanced ionic equation. The ++ are written as exponents and could be written as we usually do it as Cu^+2 + Zn ==> Zn^+2 + Cu. For the molecular equation, it is Cu(NO3)2 + Zn ==> Zn(NO3)2 + Cu So the ionic equation for adding

    asked by DrBob222 on January 8, 2007
  90. chemistry

    When iron(ii)hydroxide is mixed with phosphoric acid, iron(ii)phosphate precipitate results. b)if 3.2g of Fe(OH)² is treated with 2.50g of phosphoric acid, what is the limiting reagent and what is the reactant in access? c)How many grams of Fe³(PO⁴)²

    asked by Nokulunga on April 2, 2017
  91. chemistry

    Name a reagent that will react with a) copper(II)hydrooxide and aluminium hydroxide b)aluminium hydroxide but not copper(II)hydroxide 2)suggest how you could separate a mixture of silicon(IV) oxide and magnesium oxide 3)Name a reagent that could react with

    asked by sahar on September 17, 2011
  92. Ruminant Nutrition (college)

    I'm studying for a Ruminant Nutrition final exam and have a couple essay questions that I'm really struggling with... - How do ruminants fit into sustainable food production systems? - Assume that you can genetically modify a rumen microbe to perform any

    asked by Lacey on May 4, 2009
  93. accounting

    Uncollectible Accounts—Percentage of Sales Ryan's Express has total credit sales for the year of $178,000 and estimates that 3% of its credit sales will be uncollectible. Record the end-of-period adjusting entry on December 31, in general journal form,

    asked by amber on March 1, 2014
  94. accounting

    Uncollectible Accounts—Percentage of Sales Ryan's Express has total credit sales for the year of $178,000 and estimates that 3% of its credit sales will be uncollectible. Record the end-of-period adjusting entry on December 31, in general journal form,

    asked by kathy on March 1, 2014
  95. Pre AP Chemistry

    If I have a 1200 gram sample of a soft drink and it contains 180 grams of sugar, the percentage by mass of the sugar in the drink is 15%. If the sugar in the drink is sucrose (C12H22O11), how many grams of pure carbon can be obtained from decomposing all

    asked by Lynn on February 22, 2011
  96. CHEM

    Hydrogen peroxide (H2O2) is decomposed according to the following reaction: 2H2O2 (l) ¡÷ 2H2O (l) + O2 (g) If 6.00 g of aquesous solution containing hydrogen peroxide was decomposed after heating, the mass of oxygen gas collected is 2.40 g, what is the

    asked by CHAN on December 30, 2014
  97. statistics

    The body temp of normal healthy persons are normally distributed with a mean of 98.2 degrees F and a standard deviation od .62 degree F. If we define a fever to be a body temp above 100 degrees F, what percentage of normal and healthy person would be

    asked by Anonymous on May 19, 2013
  98. Statistics

    the heights of young women are approximately Normal with 65 inches and standard deviation 2.5 inches. The heights of men in the same age group have mean 70 inches standard deviation 2 inches. What percentage of women are taller than a man of average (mean)

    asked by Tay on October 22, 2015
  99. statistics

    The number of hours that college students sleep on a week night is approximated by a normal curve with a mean of 7 hours and a standard deviation of 1.7 hours. Answer the question below using a z table: On a week night, what percentage of students sleep

    asked by Anonymous on August 18, 2014
  100. math

    It has been estimated that 0.8% of a certain country's population are homeless. Now 0.8% is a small percentage, but there are approximately 313 million people in the country, and 313 million is a large number. Approximately how many people are homeless?

    asked by TAYLOR on May 4, 2014