# i need the exat percentage of nitrogen in magnesium nitride

6,975 results, page 40
1. ## math

If you deposit money in a savings account with an interest rate (APR) of 5% and the account compounds quarterly, which is your annual percentage yield (APY)? Convert your answer to a percent and round it to two decimal places.

asked by laurin on November 3, 2012
2. ## chemistry

A 1.252g sample containing iron is dissolved and converted to FE 2+ followed by addition of 25ml of 0.01M k2 cr2 07. The excess K2cr207 required 6.85 ml of 0.015M. Find the percentage FE304 FW 231g/mol in the sample. The right 7.96% Who helps me

asked by Fai on December 16, 2012
3. ## Chemistry

Use the following information to identify element A and come pound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a

asked by Julia on March 30, 2007
4. ## graphs

Which of the following questions will most likely be answered by displaying data on a line graph? A) which plant showed the fastest growth during the experiment? B) which type of pet do the most students have? C) what percentage of the class likes

asked by STAR WARS LEGOS ARE AWESOME on November 7, 2017
5. ## graphs

Which of the following questions will most likely be answered by displaying data on a line graph? A) which plant showed the fastest growth during the experiment? B) which type of pet do the most students have? C) what percentage of the class likes

asked by STAR WARS LEGOS ARE AWESOME on November 7, 2017
6. ## math

in 2010 i had 36 plums and in 2013 i now have 25 plums, what is the percentage of plums i have cut back on

asked by sue on May 14, 2013
7. ## Math

Each digit of a four-digit PIN can be any number from 0 to 9. What is the percentage of PINs with no digit repeated more than twice?

asked by Judy on June 7, 2014
8. ## Chemistry

If the percentage yield of a reaction was 78.51% and the theoretical yield was 288.0 g, what was the actual yield?

asked by christine on August 18, 2010
9. ## university of johannesburg

if sample(aluminium ammonium sulphate contains 6%aluminium) what is the approximate percentage of aluminium?

asked by prudence on September 7, 2010
10. ## Chemistry

Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms. b) two nitrogen atoms for every four oxygen atoms. c) one silicon atom for every two oxygen atoms. d) one zinc atom for every

asked by Melissa on July 1, 2010
11. ## Chemistry

Write the chemical formulas for the compounds containing each of the following: a) one calcium atom for every two iodide atoms. b) two nitrogen atoms for every four oxygen atoms. c) one silicon atom for every two oxygen atoms. d) one zinc atom for every

asked by Melissa on July 1, 2010
12. ## Science

You are a Chemical engineer, trying to synthesize N2H4(l). Your boss suggests that you try to synthesis it from the elements, nitrogen and hydrogen, at 25 celsius and 1.0 atm (since this would be a cheap way of doing it). Write a short note to sent to your

asked by Sue on July 26, 2012
13. ## chemistry

Using the activity series, write a balanced chemical equation for the following reactions: 1. iron metal is added to a solution of copper (II) nitrate 2. zinc metal is added to a solution of magnesium sulfate 3. hydrobromic acid is added to tin metal 4.

asked by Jessica on March 27, 2011
14. ## chemistry

Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0230 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective

asked by john on November 5, 2012
15. ## General Chemistry

Sodium sulfate is slowly added to a solution containing 0.0500 M Ca2 (aq) and 0.0290 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate?What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective

asked by yab0yMark94 on March 19, 2014
16. ## chemistry

Monosodium glutamate (aka MSG) NaC5H8NO4 is used as a food additive for flavor or as a preservative. a. what is the mass of MSG (g) that contains 545 mg sodium? b. calculate the percentage of each element present in MSG.

asked by Jillian on April 12, 2013
17. ## CHEMISTRY

In the analysis of food, the nitrogen from the protein is sometimes converted into ammonia which is titrated against a strong acid. Given that the final NH3 concentration (approximate) is 0.2M and that pKa for NH4+ is 9.2, choose the best indicator for

asked by Lucinda on May 29, 2010
18. ## college chemistry

In the analysis of food, the nitrogen from the protein is sometimes converted into ammonia which is titrated against a strong acid. Given that the final NH3 concentration (approximate) is 0.2M and that pKa for NH4+ is 9.2, choose the best indicator for

asked by Lucinda on May 27, 2010
19. ## Chemistry

a compound of nitrogen and oxygen is 30.46% by mass N and 69.54% by mass O. the molar mass if the compound was determined to be 92g/mol. What is the empirical formula of the compound? What is the molecular formula of the compound?

asked by Gina on October 23, 2014
20. ## chemistry

Nitrogen dioxide (NO2) cannot be obtained in a pure form in the gas phase because it exists as a mixture of NO2 and N2O4. At 23°C and 0.94 atm, the density of this gas mixture is 2.6 g/L. What is the partial pressure of each gas? NO2 N2O4

asked by Kailee on November 18, 2012
21. ## Chemistry

Sorry for postiong twice. But I really need to know if the answers I am getting are correct; Nitrogen and oxygen react to produce nitric oxide according to the following equation: N2 (g) + O2 (g) → 2 NO (g) The equilibrium constant for this reaction is

asked by John on March 10, 2018
22. ## Chem

Please help are these right? A 2.3 mole sample of nitrogen (N2), has a volume of 50.0 L and a pressure of 630 mmHg. What is the temperature of the gas? 41.5 C which I converted to Kelvin and got 231.5K Calculate the molarity (M) of the following solutions:

asked by Jada on November 29, 2010
23. ## chemistry

I am given the following reaction: 2NH3(g) -----> N2(g) + 3H2(g) 6.4 mols of ammonia gas has been put into a 1.7 L flask and has been permitted to reach equilibrium in accordance to the reaction listed above. If the equilibrium mixture has 4.2 mols of

asked by Eric on May 26, 2008
24. ## Math

A team has won 50% of the 60 games it played, find the number of games the team must win in succession to increase its winning percentage to 60%?

asked by Brooke on May 15, 2013
25. ## Statistics

Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

asked by Erik on May 4, 2011
26. ## Biology

My teacher asked me this question and I do not know the answer would you be able to tell me and why thank you large bodies loose a smaller percentage of heat to their surroundings than smaller bodies. Why?

asked by Ellie on October 26, 2011
27. ## College Chem

When a0.269g sample of a barium compound was treated with excess H2SO4, 0.0891g of BaSO4 formed. What is the percentage of Barium in the compound?

asked by London on March 17, 2010
28. ## math

The decay of uranium is modelled by D = D_0 * 2^(-kt). If it takes 6 years for the mass of uranium to halve, find the percentage remaining after: a. 2 years

asked by fun times on November 24, 2017
29. ## Statistics

Suppose that heights of newborns are bell shaped with a mean of 6.8 pounds and a standard deviation of 1.3 pounds. What percentage of weights are: a) Below 6.8 lbs.? b) Above 8.3 lbs.?

asked by Erik on May 7, 2011
30. ## statistics

IQ scores are normally distributed and assume that the average IQ for all Economics majors is 108 with a standard deviation of 11. What percentage of Economics majors would have an IQ of more than 118?

asked by Emily on October 24, 2011
31. ## chemistry

What volume of 10 percentage (mass/volume) solution of Na2CO3 will be required to neutralise 100mL of HCl sution containing 3.65g of HCl.

asked by Raveena on March 22, 2018
32. ## computers

write a c program to find the percentage marks where obtain marks and total marks is given by user also show the fail message if marks is less than 17%

asked by puja on November 28, 2014
33. ## Chemistry

At 25 degrees Celsius, the base ionization constant for NH3 is 1.8 x ^-5. Determine the percentage ionization of a M solution of ammonia at 25 degree Celsius.

asked by Caitlin on March 19, 2012
34. ## Math

The perfentage of residents in a city in Shreveport who recycle increased from 28.3% in 2000 to 31.1% in 2007. Predict the percentage of residents who will recycle in 2017.

asked by Brandi on May 11, 2011
35. ## Maths

adnan bought 96 eggs at the rate of Rs.40 per dozen and sold at the rate of Rs.4 per egg.find the percentage of profit,if 3 eggs were rotten.

asked by Rahim shah on October 13, 2016
36. ## physics

the speed of a wave on a string is 150m/s when the tention is 120n the percentage increase in the tension in order to rise the wave speed by 20% is

asked by Anonymous on June 12, 2013
37. ## physics

the speed of a wave on a string is 150m/s when the tention is 120n the percentage increase in the tension in order to rise the wave speed by 20% is

asked by Anonymous on June 12, 2013
38. ## statistics

In a psychology class of 100 students, test scores are normally distributed with a mean of 80 and a standard deviation of 5. Approximately what percentage of students have scores between 70 and 90? A. 68% B. 80% C. 95% D. 99%

asked by StudentD on August 15, 2012
39. ## psychology

If the mean score on a one mile running test was 14 minutes and the standard deviation was 1 minute what percentage of subjects ran the mile in 15 minutes or less

asked by sharon on August 29, 2012
40. ## math

could you show us the work on getting the answer 33.6% from the question if 125 people got parking tickets this month and 83 got tickets the next month. What is the percentage reduction?

asked by Luann on February 3, 2012
41. ## math

I sold a book on the Internet for \$6.00. I could have sold it at my garage sale for \$1.00. I made \$5 more on the Internet. What is the profit as a percentage? What is the formula for figuring that per centage?

asked by Beni on December 6, 2007
42. ## math

There are two distinct natural numbers. Each is first increased by 10 then by same percentage as each was increased for the first time. Each number finally results in 72 Find the difference between the numbers.

asked by hiren on August 14, 2016
43. ## math

Shania has a box of coloured beads.2/5 of them are red.1/3 of the remainder is yellow and the rest is blue. What fraction of the beads is blue in percentage

asked by patrice on May 19, 2015
44. ## math

income 1000 2000 3000 taxes 200 350 450 what percentage of income is paid in taxes at each level?

asked by karen on January 22, 2013
45. ## maths

twenty-seven out of thirty students have a mobile work out the percentage of students who do not have a mobile phone! show each stage of working out? THANKYOU

asked by rose on February 15, 2011
46. ## Math

Adnan bought 96 eggs at the rate of RS.40 per dozen and sold at the rate of RS.4 per egg.find the percentage of profit if 3 eggs were rotten

asked by Anonymous on May 5, 2018
47. ## Chemistry

I havent been at school for 8 days due to somthing wrong with my heart, but the teachers gave me work. I have no clue how to do them. I really need help please, There all due tomarrow. Ammonia is formed by reacting nitrogen and hydrogen gases. How many

asked by Help please on April 6, 2010
48. ## Chemistry

1. Suppose o2, n2 and Ar were placed at 1.00 atm and 273 K in closed containers. A tiny hole is opened in each container, allowing each gas to diffuse into another container filled with neon gas. What is the ratio of the rate of diffusion of nitrogen to

asked by casey on May 22, 2015
49. ## chemistry

THe thiocyanate ion acts as a Lewis base, donating a pair of electrons to the Fe ^ 3+ ion. Both sulfur and nitrogen atoms have lone pair electrons that can potentially be donated. Therefore, ther are two different structures (linkage isomers) that can be

asked by Judy on June 29, 2010
50. ## math

Benadryl is on sell this week for 20% off of the normal selling price at \$10.00 per unit. If the pharmacy purchased Benadryl at \$8.00 per unit, what is the gross profit percentage?

asked by cham on July 29, 2014
51. ## Maths

Mr Gosh purchased wrist watches worth Rs 60000. He sold one-third of them at a profit of 20% and remaining at a loss of 5%. Calculate his overall profit or loss percentage.

asked by Anuja on November 25, 2015
52. ## math

The ratio of marks obtained by Ashpreet and Bhupinder on an exam is 6 : 5. If the combined average of their percentage scores is 68.75%, and the sum of their marks is 275, what was the exam out of?

asked by xyz on March 4, 2017
53. ## math

A (yearly) cash flow stream is x=(-40,10,10,10,10,10,10). The spot rates are (yearly in percentage) s=(5.0,5.3,5.6,5.8,6.0,6.1). Use the discount factors to determine the (net) present value of the stream.

asked by Anonymous on August 20, 2014
54. ## Algebra

I need the equation for this problem: I sold some books for \$10 total on the Internet. If I had sold them at my garage sale I only would have received \$6 or \$4 less. What percentage did I gain by selling on the Internet?

asked by Gandma Beni on December 4, 2007
55. ## maths help

There are two distinct natural numbers. Each is first increased by 10 then by same percentage as each was increased for the first time. Each number finally results in 72 Find the difference between the numbers. How to do in simplified way please help

asked by Dharmesh on August 14, 2016
56. ## investment and real estate analysis

A 9-year bond has a yield of 6.0% and a duration of 7.982 years. If the market yield changes by 35 basis points, what is the percentage change in the bond’s price?

asked by amanda on March 6, 2011
57. ## newsome

1. lactate has a molecular weight of 90.08. How much lactate is needed to make 3 liters of .15 molar lactate. 2.What is the percentage of lactate (it's a solid) in the solution made in question 1.

asked by chemistry on November 13, 2014
58. ## economics today

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:

asked by Anonymous on March 1, 2011
59. ## physics

What percentage of a floating iceberg’s volume is above water? The specific gravity of ice is 0.917 and the specific gravity of the surrounding seawater is 1.025.

asked by James on December 13, 2009
60. ## math

1. Anna mixes the letters s-e-l-e-c-t-e and d thoroughly. Without looking, mary draws one letter. expressed as a fraction, decimal, and percentage. what is the probability that e will not be the letter mary selects

asked by Pug lover on May 23, 2018
61. ## Accounts

The estimated allowance for bad debts for the month of May using a percentage .5% on the net sales of 97,500. what is the bad debt expense for the month of may. I will like to see the calculation please.

asked by Peaches on June 29, 2009
62. ## Physics

A golf ball, dropped from 2 meters above a floor, rebounds to a height of 1.6 meters. What percentage of its energy of motion is lost in the collision with the floor?

asked by Sandy on September 6, 2012
63. ## science

As redioactive material decays and the percentage of new material in the original sample increases, does the age of the sample substance increase, decrease, or remain the same?

asked by kerri on February 13, 2009
64. ## science

can you save money on your electric bill from a regular electric company by choosing to use a percentage of wind power through them? Or does it make your bill higher?

asked by Anonymous on April 10, 2012
65. ## College algerba

The​ half-life of a certain radioactive element is about 1500 years. After 2800 ​years, what percentage P of a sample of this element​ remains?

asked by Samantha on November 14, 2016
66. ## chemistry

4g of a mixture of CaCO3 and sand is treated with an excess of HCl and 0.88g of CO2 is produced. What is the percentage of CaCO3 in the mixture

asked by Ana on February 17, 2015
67. ## science

using the punnet square one trait is Dd and the other id dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

asked by Anonymous on April 12, 2013
68. ## 7th grade math

Suppose 36 videos are added to a video collection that has 24 videos. What is the percentage of change. I got 50 percent....my mom says it's 150 percent. thanks!

asked by Peggy on January 6, 2016
69. ## geometry

if the length of each edge in a cube is increased by the same percent and the result was a cube that had 25% more volume than it originally had, by what percentage were the edges increased

asked by emily on September 20, 2012
70. ## science need help

using the punnet square one trait is Dd and the other is dd. 1) does the mother or father in a have dimples b) what percentage of children are likely to have dimples i think for a: it is the father because of the D so that it dominant and b:50 because two

asked by Anonymous on April 12, 2013
71. ## physics

a compound consist of carbon,hydrogen and oxygen only.the percentage by mass are carbon 40.0% and 6,7% hydrogen.calculate the empirical formulae

asked by ellen on September 25, 2014
72. ## class

Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z-scores: Above .10? Below .10? Above .20? Below .20? Above 1.10? Below 1.10? Above -.10? Below

asked by eddie wade on May 3, 2015
73. ## chemistry

Reacting 959 mol of SiO2 with excess carbon yields 28.8 kg of SiC. What is the percentage yield? SiO2 + 3C--> SiC + 2 CO

asked by Kelly on March 3, 2010
74. ## math

What is 6.5%of 40? Showing work 0.065 x   40 -------------   2.600 that is 2.6 just reverse what you would to to get a percentage. 40 times .065 = 2.6

asked by jordan and brooke on January 18, 2007
75. ## psychology

Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z-scores: Above .10 = Below .10 = Above .20 = Below .20 = Above 1.10 = Below 1.10 = Above -.10 =

asked by eddie wade on May 3, 2015
76. ## math

please help forgot how to do it What was the percentage increase in the age 75+ population of Europe from 1970 to 1995? 1970,22,762,1995,38,139

asked by Anonymous on January 13, 2008
77. ## Math

Shanti bought lemons at 7 foe Rs.6 and sold them at 6 for Rs.7. (1).find her profit percentage (2).how many lemons would she have to sell to earn a profit of Rs.65?

asked by Vishnu on January 10, 2017
78. ## Percent Math Fasted Way to Solve

The BMR for a man in his 20s is about 1,700 calories per day. If 204 of those calories should come from protein, about what percentage of his diet should come from protein?

asked by Anonymous on February 6, 2014
79. ## financial management

On a Statement of Revenue and expense I have one year plus the percentage of change and I need to find the projected budget for next year Where can I find how to to do this problems

asked by Mary on June 26, 2013
80. ## math

If the store purchases an item at a wholesale cost of \$3.50 per item, and it is sold at a retail value of \$5.00 per item. What is the gross profit percentage of the item?

asked by alan on April 20, 2016
81. ## math (check answer plz)

type of cookies/Adults/children/total chocolate /5 /10 / ----------------------------------------------------------------------------------- Peanut /8 /6 / ------------------------------------------------------------------------------------ oatmeal /7 /4 /

asked by xpersonx on April 22, 2014
82. ## statistics

Test scores on the ACT exam are normally distributed with a mean of 211 and deviation of 4.8. Using the 68-95-99.7 rule, find the percentage of ACT scores within 9.6 of the mean of 21.1, and 14.4 of the mean of 21.1

asked by Kasi on August 2, 2010
83. ## Statistics

Suppose that the scores of architects on a particular creativity test are normally distributed. Using a normal curve table, what percentage of architects have Z scores (a) above .10, (b) below .10, (c) above .20, (d) below .20, (e) above 1.10, (f) below

asked by Michael on April 9, 2012
84. ## math

Traditions Clothing Store is having a sale. Shirts that were regularly priced at \$20 are on sale for \$17. What is the percentage of decrease in the price of the shirts?

asked by bkue on March 14, 2012
85. ## math

The united states emitted 19.5 million of nitrogen oxides (NO) into the atmosphere in 1987. ONe metric ton (1) equals 1,000 kg. How many kilograms of no were emitted to the atmosphere in the united states during 1987?

asked by Lulu on September 3, 2008
86. ## math

The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

asked by deedee on October 1, 2008
87. ## Math 115

The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

asked by Debbie on November 30, 2008
88. ## Math

The United States emitted 19.5 million t of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1 t) equals 1,000 kg. How many kilograms of NO were emitted to the atmosphere in the United States during 1987?

asked by Regina on August 12, 2009
89. ## math

the united states emitted 19.5 million of nitrogen oxides (NO) into the atmosphere in 1987. One metric ton (1t) equals 1,000kg. How many kilograms of NO were emitted to the atmosphere in the united states during 1987?

asked by Anonymous on June 18, 2009
90. ## Chemistry

PLEASE HELP!! On a clear day at sea level, with a temperature of 25 °C, the partial pressure of N2 in air is 79 kPa and the concentration of nitrogen in water is 5.3 x 10-4 M. When the partial pressure of N2 is ________ kPa, the concentration in water is

asked by Henry on May 25, 2012
91. ## chemistry again :)

A compound containing only sulfur and nitrogen is 69.6% S by mass; the molar mass is 184 g/mol. What are the empirical and molecular formulas of the compound? i solved for empirical and got a 1:1 ratio so it would be SN. for the molecular do i take

asked by lyne on January 3, 2009
92. ## fanince

) A thirty-year U.S Treasury bond has a 4.0 percent interest rate. In Contrast, a ten-year Treasury bond has an interest rate of 2.5 percent. A maturity risk premium is estimated to be 0.2 percentage points for the Longer maturity bond. Investors expect

asked by jasom on May 8, 2013
93. ## Chemistry

2 moles of helium (He) are pumped from a gas canister into a weather balloon. The balloon at this point has a volume V1. 1 mole of nitrogen gas (N2) is added at the same temperature and pressure. The volume of the balloon changes to V2. How will the new

asked by Colin on April 18, 2013
94. ## Finance

Homework Help: Finance Posted by Sally on Monday, November 23, 2015 at 8:02pm. The answer given by Finance - Anonymous , Monday, November 23, 2015 at 8:12pm Add the tax to the "before tax" to get the answer was not helpful. I am hoping someone can give me

asked by Sally on November 24, 2015
95. ## Chemistry

A 50.0 L reaction vessel contains 1.00 moles of nitrogen gas, 3.00 moles of hydrogen gas and 0.500 moles of ammonia gas. Explain how this reaction will proceed if Kc=0.500 at 400 degrees C. N2(g) + 3H2(g) ⇌ 2NH3(g)

asked by Ceamus Angelina on July 9, 2018
96. ## Chemistry

Gold is alloyed with other metals to increase its hardness in making jewelry. Consider a piece of gold jewelry that weighs 9.85 g and has a colume of 0.675 cm cubed. The jewelry contains only gold and silver, which have densities of 19.3 g/cm cubed and

asked by william on July 25, 2005
97. ## Maths

A jug contained 780 ml of mil. Mrs Li poured 221 ml of the milk into a glass and 130 ml into a cup. What percentage of milk was left in the jug?

asked by Zayn on October 4, 2012
98. ## chemistry

2gm of a mixture of na2co3 and nahco3 on heating to a constant weight gave 224ml of co2 stp. Calculate the percentage of na2co3 in the mixture?

asked by Raj Aryan on December 20, 2017
99. ## Maths

The selling price of a pencil box was \$4. Chee Keong bought the pencil box and paid \$4.28 including GST. What percentage of milk was left?

asked by Zayn on October 4, 2012
100. ## math

Mr. hernandez had to interview a total of 63 households in his assignment. H has already finished 28. what percentage of the households in his assignments has he finished? (round your answer to the nearest tenth of a percent.)

asked by Anita on November 7, 2009