# i need the exat percentage of nitrogen in magnesium nitride

6,975 results, page 62-
## math

Land growing continuous grain corn as a cash crop loses soil at a rate of 14.0 metric tonnes ha-1 yr-1. This is a fertile soil, which has an organic matter content of 3.8% and nitrogen content of 0.35% (both by mass). a) we did this question before, lost

*asked by Ramya HELP! on November 13, 2009* -
## AP Chem

A chemist added an excess of sodium sulfate to a solution of a soluble barium compound to precipitate all of the barium ion as barium sulfate, BaSO4. How many grams of barium ion are in a 458-mg sample of the barium compound if a solution of the sample

*asked by Anna on November 4, 2008* -
## chemistry

Asprin, C9H8O4, is prepared by reacting salicylic acid, C7H6O3, with acetic anhydride, C4H6O3. The other product is acetic acid C2H4O2, C9h8o4 + C4H6O3 -> C9H8O4 + C2H4O2 when 2.00 g of salicylic acid is heated with 4.00 g of acetic anhydride. If the

*asked by red on August 18, 2017* -
## science

below are about 21 questions from my final study guide. I was given a 563 question study guide for my final and obviously I did not understand every question. So basically I did not understand 4% of the questions which is pretty good. Just any help with

*asked by JAKE on February 29, 2008* -
## Business

Envision that you run a highly successful tattoo and piercing parlor in a small West Coast city. You are fairly certain that between you and your key competitor, you have saturated your target audience of people in their teens and 20s. To grow your

*asked by Tracey on September 6, 2012* -
## Staatistics

2 Packets of crisps from a production line have a weight distribution that is normal with a mean of 50.0 grams and a standard deviation of 2.0 grams. Samples are taken of size 36. 1. What is the probability that a sample mean is less than 49.0 grams? (Give

*asked by Natacha on December 14, 2014* -
## maths

Sixty people were asked how many films they had seen in the past year. The results are shown in table 1. Table 1: number of films seen by a group of people during the past year No of film seen(x)0 1 2 3 4 5 6 7 8 N0 of people(f) 23 12 9 6 3 4 2 0 1 What

*asked by roger on May 12, 2007* -
## math

Ricky had come limes. he gave 25% of the limes to roberta and sold Tonia 2/9 of the remainder. He remained with 280 limes. Calculate a) how many limes Ricky had at first b) Tonia gave .375 of her limes to her mother. How many limes did Tonia keep for

*asked by indira on July 21, 2017* -
## Physics help please!

1. Given t1/2 to be 0.0137 seconds, how long should it take to reach 87.5% of maximum charge? 2. Let's say you measure t1/2 to be 0.0137 seconds and the resistance in the circuit is 99 Ohms. Then what is the capacitance in micro Farads? 3.q = qmax(1 - e -t

*asked by B on March 11, 2015* -
## calculus

the surface area of a cube is increased from 24 square centimeters to 26.016 square centimeters . use differentials to determine: (1) by approximately how many centimeters does the side length of the cube increase? (2) by approximately how many cubic

*asked by denial on October 11, 2014* -
## Math

A mixture is 20% red paint, 35% yellow paint, and 45% water. If 5 quarts of red paint are added to 20 quarts of the mixture, what is the percentage of red paint in the new mixture?

*asked by Erika on February 11, 2015* -
## Probability

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find

*asked by vv on October 19, 2013* -
## Statistics

Serena Williams won the 2010 Wimbledon Ladies Singles Championship. For the seven matches she played in the tournament, her total number of first serves was 379, total number of good first serves was 256, and total number of double faults was 15. a. Find

*asked by vv on October 18, 2013* -
## organic chemistry

How to find the volume of hot water required to dissolve the mass of acid, if we have 20g of benzoic acid contaminated with 0.4g of salicylic acid? What is the mass of benzoic acid which participates when the solution is cooled to 20°C? Deduce. What is

*asked by Anonymous on October 21, 2015* -
## math

1.The land on Earth’s surface is represented by the seven continents. Europe has 77% of the dry land while Africa has 20%. North America has 4/25 and Antarctica has 1/10 of the dry land. What fractional amount of the dry land is contained within the

*asked by SammySam on January 30, 2014* -
## Chemistry

Magnesium sulfate is often used it first aid hot-packs giving off heat when dissolved in water. When 2.00 g of MgSO4 dissolves in 15.0 mL of water (d= 1.00g/mL) at 25.0ºC, 1.51 kJ of heat is evolved. A) Write the balanced equation for this reaction. I

*asked by Chris on January 29, 2007* -
## physics

A circular round disc that has a radius of 5cm and a mass of 32g is rotating with an angular velocity of w. A second disc with the same radius but with half of the mass is dropped onto the rotating disc . The two discs slide against eachother till they

*asked by Adam on July 25, 2017* -
## STATISTICS

A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is .05. b.) What is the probability the salesperson will make exactly two sales in a day? this is what I

*asked by Anna on October 10, 2015* -
## Physics

On a string instrument of the violin family, the effective length of a string is the distance between the bridge and the nut. For a violin, this distance is 29.3 cm, while for a cello it is 37.8 cm. The string of a violin is placed in a cello with the

*asked by Tension on January 28, 2010* -
## physics

On a string instrument of the violin family, the effective length of a string is the distance between the bridge and the nut. For a violin, this distance is 31.1 cm, while for a cello it is 38.8 cm. The string of a violin is placed in a cello with the

*asked by plzzzz plzzzz someonee on February 1, 2011* -
## Math

If 50% of the students in your class are men and 20% of the students have blond hair, which of the following describes the percentage of students in your class who are men with blond hair?

*asked by Marche on February 15, 2012* -
## Statistics

Age at onset of dementia was determined for a sample pf adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b.

*asked by daniel on February 10, 2014* -
## Statistics

Age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. For 15 subjects, the results were SumX=1008, and Sum(X-M)^2=140.4. Use this information to answer the following: a. What is the mean and SD for this data? b.

*asked by daniel on February 10, 2014* -
## Stat

1. For the following scores, X Y 1 6 4 1 1 4 1 3 3 1 Sketch a scatter plot and estimate the value of the Pearson correlation. b. Compute the Pearson correlation 2. For the following set of scores, X Y 6 4 3 1 5 0 6 7 4 2 6 4 a. Compute the Pearson

*asked by Cole Brown on March 4, 2013* -
## Chemistry

Are these correct also? Ammonium Chloride : NH4Cl Nitrogen Dioxide : NO2 Hydroiodice Acid : HI Stannous Iodide : SnI2 Perchloric Acid : HClO4 Sulfur Trioxide : SO3 Chromium (III) Oxide : Cr2O3 Nitric Acid : HNO3 Diphosphorous Pentoxide: P205 Mercurous

*asked by Anonymous on January 12, 2011* -
## Physics uncertainties

A flat head drill bit is used to drill holes of small depth. The drill bit can drill holes with a diameter size of (40 ± 0.5)mm. The depth of the hole has an uncertainty of ±1mm. If the total percentage uncertainty of the volume made by the hole is less

*asked by Izzy on December 16, 2016* -
## Math

The percentage of people not covered by health care insurance in 2003 was 15.6% (Statistical Abstract of the United States, 2006). A congressional committee has been charged with conducting a sample survey to obtain more current information. a. What sample

*asked by Maria on November 10, 2014* -
## statistics

A construction zone on Kings Road has a posted speed of 45 kilometers per hour. The speeds of vehicle passing through this construction zone are normally distributed with a mean of 46 kilometers per hour and a standard deviation of 4 kilometers per hour.

*asked by Nesa on May 11, 2012* -
## Chemistry pls clearly step step for me

2gm of mixture hydrated sodium carbonate 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 naturalization. calculate the

*asked by ken on June 22, 2014* -
## joint heirs college, Fola agoro, shomolu Lagos.

CHEMISTRY (1) What is the equation for reaction when calcium oxide and coke are heated in electric furnace (2) what solid remains when the following is heated-(a) lithium trioxonitrate (v), (b) potassium trioxonitrate (v), (c) calcium trioxonitrate (v).

*asked by Agunlejika Precious on October 15, 2015* -
## physics

On a string instrument of the violin family, the effective length of a string is the distance between the bridge and the nut. For a violin, this distance is 30 cm, while for a cello it is 36.6 cm. The string of a violin is placed in a cello with the

*asked by PLEASE HELP!! on February 4, 2011* -
## statistik

the average starting salary of this yaer's graduates of a large university (LU)is $25000 with a standard deviation of $5000.futhermore,it is known that the starting salaries are normally distributed. a)what is the probability that a randomly selected LU

*asked by mira on November 28, 2012* -
## history

By how much is the hispanic population in Texas' public schools expected to increase by 2040? A 24% B 93% C 104% D 213% About what percentage of the population increase in Texas is due to people moving in from other states? A 12% B 22% C 32% D 42% Why have

*asked by lindacampoalegre2 on May 23, 2017* -
## math help

A salesman has to choose between two schemes of remuneration.The first scheme has a fixed salary of rs 3700 and a commission of 2% on sales above rs 50000. The second scheme has no salary but offer commission only. The commission starting from 3% of sales

*asked by Dharmesh on August 5, 2016* -
## math

DeWitt Company sells a kitchen set for $320. To promote July 4, DeWitt ran the following advertisement: Beginning each hour up to 4 hours we will mark down the kitchen set 8%. At the end of each hour, we will mark up the set 3%. Assume Ingrid Swenson buys

*asked by monica on June 20, 2016* -
## Please help (Bio)

Measurements of oxygen binding by whole human blood, at 37oC, at pH 7.4, and in the presence of 40mm of CO2 and normal physiological levels of BPG (5 mmol/L of cells), give the following: PO2 (mm Hg) = 10.6, 19.5, 27.4, 37.5, 50.4, 77.3, 92.3 % saturation

*asked by Gulzaman on September 28, 2007* -
## Managerial Economics

Textbook authors typically receive a simple percentage of total revenue generated from book sales. The publisher bears all the production costs and chooses the output level. Suppose the retail price of a book is fixed at $50. The author receives $10 per

*asked by Jan on September 13, 2009* -
## math

can someone hep me please Population of Europe by Age Groups Population (in thousands) 1----------1950 --1970 --1995 Age 0-14--------143,175 166,367 139,464 Age15-64------- 359,162 421,432 487,110 Age 65+ 44,981- 68,642- 101,338 Age 75+ 14,553- 22,762-

*asked by Kara on January 12, 2008* -
## immigrants U.S.A

Immigrants U.S.A What do you want to know about immigrants to the U.S.A.? Since most of us are descended from immigrants -- who began arriving about four hundred years ago -- that's a lot of time and people. Please clarify your question and we'll try to

*asked by Piggy on April 22, 2007* -
## Statistics

Accrotime is a manufacturer of quartz crystal watches. Accrotime researchers have shown that the watches have an average life of 32 months before certain electronic components deteriorate, causing the watch to become unreliable. The standard deviation of

*asked by Amy on November 17, 2016* -
## calculus

(1 pt) The acceleration due to gravity, g, is given by g = (G*M)/(r^2) where M is the mass of the Earth, r is the distance from the center of the Earth, and G is the uniform gravitational constant. (a) Suppose that we change from our distance from the

*asked by Student42 on November 9, 2010* -
## Chemistry

1. Imagine that you work at a company that prepares chemical solutions. You are asked to label a solution to sell to different customers. One customer is a hospital, another is a chemistry lab at a university, and a third is a physics lab at a university.

*asked by SMS on September 10, 2014* -
## Physics

The intensity of sunlight reaching the earth is 1360 W/m^2 Part A: Assuming all the sunlight is absorbed, what is the radiation-pressure force on the earth? Give your answer in newtons. Part B: Give your answer as a percentage of the sun's gravitational

*asked by Jill on April 25, 2008* -
## Chemistry

A sample of a new plant food, "super gro", was analyzed. Determine the amount of grams of P and P2O5 as well as the percentage of P2O5 in a sample of "super gro". Mass of plant food sample: 12.50 grams Mass of MgNH4PO46H2O recovered: 8.93 grams

*asked by Justin on April 6, 2018* -
## Statistics

1. The mean monthly mortgage paid by all home owners in a town is $2365 with a standard deviation of $340. a) Using Chebyshev’s theorem, find at least what percentage of all home owners in this town pay a monthly mortgage of (i) $1685 to $3045 & (ii)

*asked by David on June 11, 2013* -
## Statistics

8. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and specific

*asked by Tab on January 26, 2011* -
## Statistics

10. It is thought that prehistoric Indians did not take their best tools, pottery, and household items when they visited higher elevations for their summer camps. It is hypothesized that archaeological sites tend to lose their cultural identity and

*asked by Tab on January 26, 2011* -
## Health--check my answers

1. A percentile rank represents the percentage of people who scored at or below the test score. True False 2. People who have high resting heart rates usually have high levels of cardiovascular fitness. True False 3. Resting heart rate is usually measured

*asked by Anonymous on October 2, 2014* -
## Heath help Plz--5 questions

1. A percentile rank represents the percentage of people who scored at or below the test score. True** False 2. People who have high resting heart rates usually have high levels of cardiovascular fitness. True ** False 3. Resting heart rate is usually

*asked by Anonymous on September 29, 2014* -
## Health Help?

1. A percentile rank represents the percentage of people who scored at or below the test score. True False 2. People who have high resting heart rates usually have high levels of cardiovascular fitness. True False 3. Resting heart rate is usually measured

*asked by Anonymous on September 28, 2014* -
## Bio (why no one is helpting?)

Measurements of oxygen binding by whole human blood, at 37oC, at pH 7.4, and in the presence of 40mm of CO2 and normal physiological levels of BPG (5 mmol/L of cells), give the following: PO2 (mm Hg) = 10.6, 19.5, 27.4, 37.5, 50.4, 77.3, 92.3 % saturation

*asked by Gulzaman on September 29, 2007* -
## Math-Needing Help Quick!

When Beth finishes college, she has a balance or $2876.37 on a credit card with an annual percentage rate (APR) or 17.3%. She decides to not make any additional purchases with her card until she has paid off the balance. Assuming the minimum payment is 2%

*asked by Logan on February 27, 2007* -
## Chemistry

Hi I just wanted to verify a few answers to chem questions I'm working on. Was wondering if anyone could help? 1. Calculate the molar concentration of 2.34g of lithium hydroxide, LiOH disolved in water to make 750ml of solution. My answer was CLiOH = 0.133

*asked by Andre on October 17, 2010* -
## Calculus

The volume of a cube is increased from 729 cubic centimetres to 849.285 cubic centimetres Use differentials to determine : (a) by approximately how many centimetres does the side length of the cube increase? (b)by approximately how many centimetres does

*asked by julia on October 11, 2014* -
## Physics

The hydrogen atom contains 1 proton and 1 electron. The radius of the proton is approximately 1.0fm femtometers, and the radius of the hydrogen atom is approximately 53 pm (picometers). - Calculate the volume of the nucleus and the volume of the atom for

*asked by Anonymous on October 15, 2014* -
## chem

i have several problems i am caught on for my homework. I appreciate any help 1. As milk spoils, rancid components begin to coagulate. This could be interpreted as a: a.a colloid forming a suspension. b.solution forming a colloid. c.solution forming a

*asked by anthony on November 17, 2015* -
## STATISTICS PLEASE HELP!!!!!

are you a chocolate "purist", or do you like other ingredients in your chocolate? american demographics reports that almost 75% of consumers like traditional ingredients such as nuts or caramel in their chocolate. they are less enthusiastic about the taste

*asked by Brittany on November 4, 2010* -
## maths

A fruit drink is made by mixing juice and lemonade in the ratio : 1 : 4 (juice : lemonade) Juice costs £6.00 per litre. Lemonade costs 50p per litre. a) show that 1 litre of the fruit drink costs £1.60 to make. b) The fruit drink is sold for £2 a litre.

*asked by jade on December 5, 2017* -
## science

How many times did Earth orbit the sun between 140 CE and 1543 , how do you figure this up???? If you know how many years that is, the earth orbits the sun once a year. I hope this helps. Thanks for asking. How many years is 140 Ce to 1543 ?? We need to

*asked by Charlotte on September 6, 2006* -
## Redox Titration questions!

Oh goodness, I'm such a pain! I need some help with these! How do I calculate the percentage? How do I start it? 2. Imagine that you ran a similar titration using a different iron sample with 0.02 M KMnO4 as the titrant. Calculate the percent of iron in

*asked by Angel on June 12, 2008* -
## chemistry

In a reaction between methane, CH4+ and chlorine, Cl2+ four products can form: CH3Cl, CH2Cl2 + CHCl3+ and CCl4. In a particular instance, 20.8 g of CH4 were allowed to react with excess Cl2 and gave 5.0 g CH3Cl, 25.5 g CH2Cl2+ and 59.0 g CHCl3+ all the CH4

*asked by Dolly on November 1, 2012* -
## Chemistry

In a reaction between methane, CH4 and chlorine, Cl2 four products can form: CH3Cl, CH2Cl2 + CHCl3 and CCl4. In a particular instance, 20.8 g of CH4 were allowed to react with excess Cl2 and gave 5.0 g CH3Cl, 25.5 g CH2Cl2+ and 59.0 g CHCl3+ all the CH4

*asked by Sunny on November 1, 2012* -
## Calculus

Suppose a cylindrical can is manufactured with radius r. The manufacturing process makes the length r imprecise; r can be off by ±0.03 cm. The manufacturing process makes the height of the can precisely equal to three times the radius r (including any

*asked by Steven on December 4, 2009* -
## Stats

G. Johnson recently inherited a large sum o money; he wants to use a portion of this money to set up a trust fund for his two children. The trust fund has two investment options: 1) a bond fund and 2) a stock fund. The projected returns over the life of

*asked by Judy on July 10, 2008* -
## Math

if there are 145 test questions, and the mean of the test scores for a class is 100 with a standard devation of 15, what percentage of the people taking the test would have the following scores: scored b/w 100 &115, scored b/w 100 & 115,scored b/w 0 & 100,

*asked by Anonymous on June 19, 2012* -
## Chemistry

Write a balanced equation using the correct formulas and include conditions (s,l,g or aq) for each of the following reactions. 1)Carbon monoxide gas reacts oxygen gas to produce carbon dioxide gas. Express your answer as a chemical equation. Identify all

*asked by TMV on November 14, 2010* -
## chemistry help!

I have a chemistry test tomorrow and I'm trying to study but none of these questions in the book make sense to me:( Help! 1. Commericially available concentrated sulfuric acid is 95% H2SO4 by mass and has a density of 1.84g/mL. How many milliliters of this

*asked by Maycee on October 18, 2009* -
## Chemistry

Aspirin is prepared by heating salicylic acid, C7H6O3, with acetic anhydride, C4H603. The other product produced is acetic acid, C2H402. C7H6O3+C4H6)3->C9H8O4+C2H4O2 What is the theoretical yield in grams of aspirin, C9H8O4, when 2.00 grams of salicylic

*asked by Lauren on November 7, 2012* -
## algebra

Scientists can determine the age of ancient objects by a method called radio carbon dating. The bombardment of the upper atmosphere by cosmic rays converts nitrogen to a radioactive isotope 14C of carbon with a half-life of about 5710 years. Vegetation

*asked by Emily on March 8, 2013* -
## chemistry

Calculation of )Hf0 for Mg2+(aq.) 1. Assume the heat capacity of the final solution is 3.92 J K-1 g-1. Using the mass of the HCl solution, calculate qcontents from equation (4.6). Calculate qsystem from equation (4.5). 2. Calculate the moles of Mg2+

*asked by Narash on March 25, 2011* -
## biology

A true breeding brown mouse is mated with a true-breeding white mouse and all their offspring are brown. If two of these brown offspring are mated, what percentage of the F1 and F2 generations will be brown?

*asked by bio on September 18, 2014* -
## Chem-Stoich

A 1.605g sample of dry calcium carbonate and calcium chloride mixture was dissolved in 35.00mL of 1.000mol-dm-3 hydrochloric acid solution. The only portion of the mixture that reacts with the hydrochloric acid solution is the calcium carbonate. What was

*asked by :) on January 8, 2015* -
## University of Belize

5. A 0.500 g sample of a BaCl2•2H2O/Na2SO4 salt mixture, when mixed with water, filtered, and dried, produced 0.225 g of BaSO4. The Na2SO4 was determined to be the limiting reactant. a. Calculate the mass, in grams, of Na2SO4 in the mixture. b. Calculate

*asked by sarah on October 29, 2013* -
## math

The oil burner in a certain house is used to heat the house and to heat the hot water.During the seven cold months when the house is heated, an average of 200 gallons of oil a month is used.In the remaining five months, when the house is not heated, a

*asked by thomas on April 27, 2014* -
## Pre-Algebra

P.S - I really need help please help me with this, please i try and still i can not do this please!!!!!! :( :( :( :( :( The table below shows the percentage of households that own a microwave in different countries. Construct a stem-and-leaf plot of the

*asked by HI, I'M NEW HERE SO I NEED HELP CAN'T DO THIS ! :( on March 22, 2013* -
## statistics

A polling company reported that 53% of 2302 surveyed adults said that they play basketball.a. what is the exact value that is 53% of 2302? b. could the result from part (a) be the actual number of adults who said that they play basketball? why or why not?

*asked by slomo on February 10, 2015* -
## Math

In a square, one pair of opposite sides was made 50% longer and the other pair of opposite sides was made 50% shorter. What percent of the square’s area is the area of the new rectangle? What percentage of the square’s perimeter is the perimeter of the

*asked by Scarlet on February 27, 2017* -
## AP CHEMISTRY

The molar mass of an unknown organic liquid (M~100) is determined by placing 5 mL of the liquid in a weighed 125-mL conical flask fitted with a piece of Al foil with a pin hole in it. The flask is heated in a boiling water bath until the liquid evaporates

*asked by Someone on April 1, 2013* -
## English IV

How does the Hitchhiker's Guide to the Galaxy link to the British literature? Is Douglas Adams a British author? What do you do when a teacher hates you enough to fail you in that class? http://en.wikipedia.org/wiki/Douglas_Adams and

*asked by Coral on June 18, 2007* -
## Math

The table shows the number of students in a middle school at the beginning of the year and the percentage that can be expected to move out of the area by the end of the year. 8. How many 7th grade students are expected to move by the end of the year? If 12

*asked by Patrick on April 3, 2018* -
## Statistics

A company that produces rivets used by commercial aircraft manufactures knows that the shearing strength (force required to breaking) of its rivets is a major concern. The company believes the shearing strength of its rivets is normally distributed with a

*asked by Jenny on January 12, 2015* -
## water treatment

A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid concentration in

*asked by Anon on November 24, 2013* -
## chemistry

Determine the number of bromide ions in solution when 4.23 g of magnesium bromide and 1.21 g of potassium bromide are dissolved in 120mL of water. Please explain not sure how to even start this problem, thanks! chemistry - DrBob222, Wednesday, December 8,

*asked by Stacy on December 9, 2010* -
## MATH

A mean score on a standardized test is 50 with a standard deviation of 10. Answer the following a. What scores fall between –1 and +1 standard deviation? b. What percent of all scores fall between –1 and +1 standard deviation? c. What score falls at +2

*asked by Bridget on April 4, 2012* -
## AP CHEMISTRY

The molar mass of an unknows organic liquid (M~100) is determined by placing 5 mL of the liquid in a weighed 125-mL conical flask fitted with a piece of Al foil with a pin hole in it. The flask is heated in a boiling water bath until the liquid evaporates

*asked by Ash on March 29, 2013* -
## math. Quantitative methods

The First American bank is trying to determine whether it should install one or two drive-through windows. The following probability distributions for arrivals and service times have been developed from historical data Time between Automobile arrivals in

*asked by mervat on April 28, 2009* -
## Economics

I am having problems answering the question below can you please help? With probability p, you will catch a disease that reduces your income from y, its level when you are healthy, to y-k, where k > 0. A vaccine is available, at cost c, that reduces the

*asked by Emma on May 14, 2013* -
## Chem (ques 2)

The analysis of some household cloudy ammonia cleaner involved diluting a 50.0mL sample of the cleaner to a volume of 250.0mL then titrating this diluted solution. The diluted sample was found to have an NH3 (aq) concentration of 0.350 mole per L. What is

*asked by atriletz on January 27, 2007* -
## BIOLOGY

PLEASE HELP ME! THANK YOU! The table shows the percentage of the body composed of water for various vertebrates. ANIMAL % OF BODY COMPOSED OF WATER herring 67 Frog 78 Chicken 74 Kangaroo rat 65 A)Which animal would you expect to have the most concentrated

*asked by MARIA on September 16, 2009* -
## statistics and probability

A company has been studying the performance of their sales department. The measure of performance used is: average monthly sales amount in dollars. For the past 12 months, the average monthly sales amount has been $4,532 with a standard deviation of $386.

*asked by faye on February 15, 2017* -
## Chemistry

In an experiment a student allowed benzene C6H6, TO REACT WITH EXCESS BROMINE BR2, in an attempt to prepare bromobenzene C6H5Br. This reaction also produced as a by-product, dibromobenzene, C6H4Br2, On the basis of the equation. C6H6 + Br2 -> c6h5Br + H Br

*asked by Sunny on November 1, 2012* -
## chemistry

In an experiment a student allowed benzene C6H6+ TO REACT WITH EXCESS BROMINE BR2+ In an attempt to prepare bromobenzene C6H5Br. This reaction also produced as a by-product, dibromobenzene, C6H4Br2+ On the basis of the equation. C6H6 + Br2 -> c6h5Br + H Br

*asked by Dolly on November 1, 2012* -
## Math Help

Data released by the Department of Education regarding the rate (percentage) of ninth-grade students that don't graduate showed that out of 50 states, 16 states had an increase in the dropout rate during the past 2 years. 18 states had a dropout

*asked by Kal Jay on November 3, 2016* -
## waste water treatment

Description A wastewater treatment plant based on activated sludge with biological phosphate and nitrogen removal via pre-denitrification. The influent flow (dwf) is 30,000 m3/day and the influent BOD concentration is 300 mg BOD/l. The suspended solid

*asked by ham on November 20, 2013* -
## math

can someone hep me please Use the following tabe to answer the question. Population of Europe by Age Groups Population (in thousands) 1----------1950 1970 1995 Age 0-14 143,175 166,367 139,464 Age15-64 359,162 421,432 487,110 Age 65+ 44,981 68,642 101,338

*asked by Kara on January 12, 2008* -
## math

can someone hep me please Use the following tabe to answer the question. Population of Europe by Age Groups Population (in thousands) 1950 1970 1995 Age 0-14 143,175 166,367 139,464 Age15-64 359,162 421,432 487,110 Age 65+ 44,981 68,642 101,338 Age 75+

*asked by Kara on January 12, 2008* -
## Math

You are a share analyst for an investment firm and are investigating the return on shares in the Eastern Mining Corporation over the last four years. The return on Eastern Mining Corporation shares over the last four years is presented. Calculate the

*asked by Gina on September 28, 2010* -
## stats

You are a share analyst for an investment firm and are investigating the return on shares in the Eastern Mining Corporation over the last four years. The return on Eastern Mining Corporation shares over the last four years is presented. Calculate the

*asked by Answer Me on October 1, 2010* -
## phi 103

mrs orlof teaches 2 history classes one in the afternoon and one in the morining yesturday she gave the same test to both classses anyone who failed the test must retake since a greater percentage of students who took the morining test failed the test than

*asked by shane on February 1, 2011* -
## Economics (37)

According to the Sleep Foundation, the average night's sleep is 6.8 hours (Fortune, March 20, 2006). Assume the standard deviation is .7 hours and that the probability distribution is normal. a. What is the probability that a randomly selected person

*asked by Mia on May 10, 2014*