# i need the exat percentage of nitrogen in magnesium nitride

6,975 results, page 57-
## biochemistry

please explain how to get these answers (answers provided): 1. If this cell were a muscle cell (myocyte), how many molecules of actin could it hold? (Assume the cell is spherical and no other cellular components are present; actin molecules are spherical,

*asked by stew on January 17, 2008* -
## Chemistry

A student cleaned a crucible with HCl. After pouring the HCl into the waste container, the crucible was neither rinsed with water or dried before the student added the NaHCO3 and KCl mixture. The crucible contained some residual HCl. How would this

*asked by Sandy on February 2, 2014* -
## math115

Steve was charged $75.00 interest for 1 month on a $3,000 credit card balance. What was the monthly interest rate? Give you answer as a percentage, round to the nearest tenth of a percent. 2.5% 2.If $5,600 is deposited into an account paying 5.325%

*asked by callie on October 3, 2009* -
## Math3( Please Help Assignment Due)

80 U2 songs (in seconds) were selected at random. Assume that the data is normally distributed and that the bands entire collection of songs has a mean and standard deviation equal to those calculated(mean=289.7 or 290, standard deviation= 76.8 or 77).

*asked by Jenny on June 28, 2016* -
## Chem.

2 KClO3 ----> 2 KCl + 3 O2 Suppose the "inert" material in the mixture was not really inert, but that is reacted with oxygen from the atmosphere when heat was applied. Would the apparent mass of oxygen liberated be larger or smaller than it should be?

*asked by Anonymous on October 2, 2012* -
## chemistry

A 3.75-G SAMPLE OF IRON ORE IS TRANSFORMED TO A SOLUTION OF IRON(II)SULFATE, FeSO4,AND THIS SOLUTION IS TITRATED WITH 0.150 M K2Cr2O7. IF IT REQUIRES 43.7 mL OF POTASSIUM DICHROMATE SOLUTION TO TITRATE THE IRON(II)SULFATE SOLUTION, WHAT IS THE PERCENTAGE

*asked by malissa on October 23, 2012* -
## Chemistry

Please help me verify: The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify which of these reactions are REDOX reactions. a. 2SO2(g) + O2(g) �� 2SO2(g) -2 -2 0 -2 -2 No change - not REDOX

*asked by Dexter on June 17, 2011* -
## Algebra

Alma can grade a batch of placement exams in 3hr and Kevin can grade a batch in 4hr. if they work together to grade a batch of exams, what percentage of the exams will have been graded by Alma?

*asked by Kgk on May 24, 2014* -
## Math

According to the National Center for Health Statistics, the mean height of an American male is 69.3 inches and the mean height of an American female is 63.8 inches. The standard deviation for both genders is 2.7 inches. According to Chebyshev’s Theorem

*asked by Smith on November 16, 2017* -
## math

a retailer buys an article at a discount of 15% on printed price from a wholesaler. He makes up the price by 10%. Due to competition in the market, he allows a discount of 5% to buyer. If the buyer pays rupees 451.44 for the article inclusive of sale tax

*asked by rushil on March 12, 2016* -
## Astronomy

One possible energy source for the mysterious object you've just discovered is the fusion of hydrogen to form carbon-12 (the most common and stable isotope of Carbon). Hydrogen has an atomic mass of 1.00794 u, while carbon has an atomic mass of 12.010 u.

*asked by qwerty on April 28, 2014* -
## Math

You earned a $25 gift card by working in Apangea and have purchased four items. Please list these items in the table below along with their cost. Then calculate the cost of each item as a fraction a decimal and as a percentage. 1.Pack of pencils Amount

*asked by Jerald on April 8, 2013* -
## Chemistry

A mixture of KCr(SO4)2 and its hydrate KCr(SO4)2•12H2O has a mass of 1.6336 g. After heating to drive off all the water, the mass is only 1.4659 g. What is the weight percentage of KCr(SO4)2•12H2O in the original mixture? Report your answer to 4

*asked by Matthew on October 11, 2017* -
## chemistry

if 37.9 liters of NO at .993atm and 146 degrees celcius are decomposed by the reaction 2NO-->N2+O2 how many grams of nitrogen will be formed... could you show mw step bu step how to do this ? thanks....i have finals tommorrow.... i need

*asked by TIFFANY on January 11, 2007* -
## Bio

1. An isotope is an atom of an element that varies in mass number due to variation in the number of: A. atoms. B. protons. C. neutrons. D. electrons. is it C 2, A covalent bond is: A. the attraction that one atom has for another atom. B. the attraction

*asked by Amy on July 10, 2013* -
## Algebra 2

Dawn is writing a computer program to find the salaries of her employees after their annual raise. The percentage of increase is represented by p in the program. Marty's salary is $23,450 now. Write a polynomial to represent Marty's salary in one year and

*asked by Tom on January 12, 2012* -
## Statistics

The probability that a student uses Smarthinking online tutoring on a regular basis is 0.41. In a group of 21 students, what is the probability that exactly 5 of them use Smarthinking Online Tutoring on a regular basis? Write only a number as your answer.

*asked by Obi on October 2, 2015* -
## Physics

You pull a sled across a horizontal frictionless patch of snow. If your pulling force is in the same direction as the sled's displacement and increases the kinetic energy of the sled by 34%, by what percentage would the sled's kinetic energy increase if

*asked by Marcus on March 22, 2014* -
## my success

Which of the following best describes an overdraft fee? removing money from an account, typically for payment percentage charged for the use of borrowed money the amount of money a consumer is allowed to spend on their credit card a fee charged when an

*asked by PLEASE help on September 14, 2017* -
## math

Empirical rule the authors generac generator produces voltage amounts with a mean of 125.0 volts and a standard deviation of 0.3 volt,and the voltage have a bell-shape distribution.using the empirical rule,what is the approximate percentage of voltage

*asked by bibi on September 18, 2011* -
## Statistics - Is it from Normal Distribution

I think I know how to answer the following question IF I assume that the distribution is normal - however, since the question doesn't say that it comes from a normal distribution - should I proceed differently? Question reads: The mean IQ among members of

*asked by CJ on April 28, 2010* -
## statistics

2. The manager of a sandwich shop gathers data on what people spend on lunch on a particular day of the week. The results are $4.20, $4.22, $2.35, $4.32, $5.25, $6.48, $6.78, $8.59, $6.95, $5.52, $6.83, $7.35, $4.36, $9.39, $6.42. To the degree that this

*asked by Anonymous on June 26, 2013* -
## Chem

Some very effective rocket fuels are composed of lightweight liquids. The fuel composed of dimethylhydrazine (CH3)2N2H2 mixed with dinitrogen tetroxide was used to power the Lunar Lander in its missions to the moon. The two components react according to

*asked by Samantha on February 24, 2009* -
## Chemistry

the mass of the crucible is 19.73 g fill the crucible with CuSO4 which was 26.44 g Heat the crucible until the water is released it weighed 23.40 g So now, how many moles of water is removed? The number of moles of CuSO4 that after dissolution rest?

*asked by Caroline on June 6, 2012* -
## Biostatitics

Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who indicated to have at some point of their life been tested for HIV is 32 percent

*asked by ayo on February 1, 2016* -
## statistics

Experts consider high serum cholesterol levels to be associated with an increased incidence of coronary heart disease .suppose that the logarithm of cholesterol levels for males in a given age bracket are normally distributed with mean of 2.35 and a

*asked by koky on November 14, 2010* -
## chemistry

problem 3. A compound Y containing carbon,hydrogen and oxygen was burned in a stream of oxygen,the carbondioxide and water were cooled in a pre way absorption tube and carefully reweighed.Readings obtained were initial mass of Y is 20.63mg mass of

*asked by yankoua on October 28, 2009* -
## Chemistry

A sample of g 0.2050 oxalic acid (4.2 H2C2O H2O) required 25.52 mL of KOH solution to complete the neutralization according to rea tion: HOOCCOOH + 2 KOH + KOOCCOOK ↔ H2O Which the concentration in mol L-1 of this KOH solution? A sample of an unknown

*asked by Michaela on April 13, 2016* -
## Climate Change

In a Business 'As usual senario,' global CO2 emissions reach 64 GtCO2 y -1 by 2050. Convert this figure to GtC y-1, and calculate the percentage increase from the level of global CO2 emissions in 2004, estimated as 8.8 GtC y-1. Lets see... carbon is what

*asked by Tania on June 13, 2007* -
## statistics

a companys ceo wanted to estimate the percentage of defective product per shipment. in a sample contianing 600 products he found 45 defective product. a. find 99% confidence interval for the true porporton of defective product show calcultions and explain

*asked by crystal on August 23, 2011* -
## statistics

You have hired a polling organization to take a simple random sample from a box of 200,000 tickets and estimate the percentage of 1s in the box. Unknown to them, the box contains 50% 0s and 50% 1s. How far off should you expect them to be if they draw

*asked by Anonymous on August 8, 2011* -
## math steve for your help

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 fes047h20 in the sample

*asked by Fai on December 29, 2013* -
## math

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided

*asked by Kathy on May 31, 2014* -
## math

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided

*asked by Chris on March 2, 2014* -
## Math

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells the dinners at an 80% markup based on cost. They decided

*asked by Christina on September 1, 2014* -
## Business Math

The Mills Lunch Shop prepares fresh take-out entrees each day. On Tuesday, 40 baked chicken dinners were prepared at a cost of $3.20 each. A 20% spoilage rate is anticipated. Mills Lunch Shop sells dinners at an 80% markup based on cost. They decided to

*asked by Joan on September 6, 2014* -
## statistics

suppose the replacement times for washing machines are normally distributed with mean 8.6 years and standard devistion of 1.6years. a. what percentage of washing machines have replacement times less than 7 years? b. find the probability that a washing

*asked by tara on May 13, 2012* -
## Physics

A projectile (mass = 0.17 kg) is fired at and embeds itself in a target (mass = 2.84 kg). The target (with the projectile in it) flies off after being struck. What percentage of the projectile's incident kinetic energy does the target (with the projectile

*asked by Help on January 23, 2013* -
## math

2 hours after a given drug has been administered there is only 75% of it left in the body. a. What percentage of it leaves the body every hour (find the hourly decay rate)? b. What is the continuous decay rate? c. How long until 50% has left the body? d.

*asked by Lindsey on November 21, 2011* -
## chemisrty

Q1) A solution of ascorbic acid (C6H8O6, Formula mass = 176 g/mol) is made up by dissolving 80.5 g of ascorbic acid in 210 g of water, and has a density of 1.22 g/mL at 55 oC. Calculate the following: a) the mass percentage of ascorbic acid b) the mole

*asked by lyan on January 16, 2012* -
## Chemistry

Need Help! 1. Ammonia is produced by the reaction of hydrogen and nitrogen. N2(g)+3H2(g)→2NH3(g)ammonia How many moles of N2 reacted if 0.65mole NH3 is produced? How many moles of NH3 are produced when 1.2moles H2 reacts? 2.In the acetylene torch,

*asked by Jennie on February 28, 2015* -
## Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 580.0 kHz. When the search coil (inductor B) is brought

*asked by Anonymous on April 11, 2013* -
## Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 510.0 kHz. When the search coil (inductor B) is brought

*asked by Elizabeth on March 21, 2013* -
## Finance

Suppose that 1 year later, NTT's common stock is selling for $75 per share. During the 1-year period, NTT paid $4 commons stock dividend. Determine the realized (ex-post) percentage holding period return on NTT common stock. What if it was sold for $58 1

*asked by Greatdanelola on September 21, 2008* -
## Chemistry

7) A 3.33 g sample of iron ore is transformed into a solution of iron (II) sulfate. And this solution is titrated with 0.0150 M potassium dichromate. If it requires 41.40 mL potassium dichromate solution to titrate the FeSO4, find the percentage of iron in

*asked by CHIPNDALE on November 22, 2015* -
## french

Here is my last post for a little bit I have two questions one Mme when ever you reply all the accents on my screen turn weird is there a problem with that? and here are 3 more with english and french Saint-Louis-Du-Ha!-Ha! English If you are going to book

*asked by Daniel on November 14, 2008* -
## math,eng,phy,chem,bio,geography,economics

if 8.99g of scandium and 8.99g of oxygen react to give scandium oxide and a leftover of oxygen 3.65g. what percentage of scandium oxide is the oxygen

*asked by joyce on January 17, 2016* -
## College Algerbra

the value of a particular investment follows a pattern of exponential growth. In the year 2000, you invested money in a money market account. The value of your investment t years after 2000 is given by the exponential growth model A = 1600e^(0.052t). By

*asked by Hilary on March 19, 2017* -
## Math

type of cookies|adults|children chocolate chip | 5 | 10 peanut butter | 8 | 6 oatmeal | 7 | 4 16. Based on the two way frequency table how many people chose chocolate chip cookies A. 20 B. 15 C. 14 D. 11 17. What percentage of the adults chose peanut

*asked by bunny64 on April 6, 2016* -
## statistics

Based on data collected by the National Center for Health Statistics and made available to the public in the Sample Adult database, an estimate of the percentage of adults who have at some point in their life been told they have hypertension is 23.53

*asked by Tom on September 13, 2011* -
## chemistry Damon check my calculation

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 this solution required 20ml of n/10 kmn04 solution for complete oxidation. Calculate the

*asked by Fai on January 5, 2014* -
## Statistics

A sociologist is testing the null hypothesis that the percentage of school superintendents who earn an annual salary of more than $150,000 is greater than or equal to 50%. The sociologist conducts a poll of 1100 randomly selected superintendents and finds

*asked by Rina on February 21, 2011* -
## Chemistry

The question is asking the molarity of vinegar, and I am not sure if i did it right. NaOH + HCH3COO = CH3COONa + H2O NaOH C= 0.70mol/L V= 14.6mL --> 0.0146L n, NaOH = CxV = 0.70 (0.0146) = 0.01022mol 1 mol NaOH = 0.01022mol NaOH -----------------

*asked by hailey on May 20, 2018* -
## Microeconomics-Algebra Calculation

Consider public policy aimed at smoking. Studies indicate that the price elasticity of demand for cigarettes in about 0.4. If a pack of cirarettes currently costs $2 and the government wants to reduce smoking by 20 percent, by how much should the govenment

*asked by GG on December 5, 2007* -
## World history; Check:P

Write a opinion paper on the most significant consequences of the Agricultural Revolution. This is about 10,000 yearsago. One of the greatest consequence was that the population increased. The increase of population lead to the need of more clothing.

*asked by Unknown on February 19, 2013* -
## Probablity

The life time of a certain kind of batteries has a mean life of 400 hours and standard deviation as 45 hours. Assuming the distribution of life to be normal, find i) the percentage of batteries with a life time of atleast 470 hours. Ii) Out of 10000

*asked by Kruti on October 1, 2015* -
## Chem HW!! Difficult! HELP!

Urea (H2NCONH2) is used extensively as a nitrogen source in fertilizers. It is produced commercially from the reaction of ammonia and carbon dioxide. 2 NH3(g) + CO2(g) ---Heat pressure---> H2NCONH2(s) + H2O(g) Ammonia gas at 223°C and 90. atm flows into a

*asked by Jane on April 5, 2013* -
## Chemistry

In a car engine, gasoline (represented by C8H18) does not burn completely, and some CO forms along with CO2 and H2O. If 5 percent of the gasoline forms CO, A)What is the ratio of CO2 to CO molecules in the exhaust? B)What is the mass ratio of CO2 to CO?

*asked by Daniel on October 11, 2010* -
## Math

Find the monthly payment. Mortgage amount Annual percentage rate 2. $146,800 5.25% 30 years 4. $113,400 5% 15 years 6. Find the interest paid the mortgage in exercise 2. 8. Find the total interest paid for the mortgage in exercise 4.

*asked by Chol on July 8, 2014* -
## Science

To determine the mass percentage of an iron sample, the dissolved sample [iron exists at the start as iron(II)] was titrated with potassium permanganate (permanganate forms manganese(IV) oxide.)If 22.25 cubic cm of 0.0123 potassium permanganate, what is

*asked by Anna on May 2, 2011* -
## 7th grade science ASAP please!

1. Which of the following form the main components of our body cells? (1 point) carbohydrates and proteins fat and phosphorous proteins and iron nucleic acids and calcium 2. Organic compounds always contain______. (1 point) water oxygen nitrogen carbon 3.

*asked by Delilah on November 5, 2012* -
## Physics

A uniform disk of mass 2kg and radius 10.0cm is spinning on a fixed frictionless bearing at 3 revolutions/second. A think cylindrical shell of mass 2kg and radius 10cm is carefully dropped onto the spinning disk so that they end up spinning together, with

*asked by Will on May 16, 2011* -
## Chemistry grade 11

Okay I've got a HUGE chem test tomorrow and I desperately need help! Please help!!!! 73. Hematite (Fe2O3) and magnetite (Fe3O4) are two ores used as sources of iron. Which ore provides the greatest percentage of iron per kilogram? 78. A hydrate contains

*asked by Lizzy B on April 27, 2017* -
## Chemistry

Washing soda is added to hard water to allow soap to lather. A certain brand of washing soda contains partially hydrated sodium carbonate solid. A 0.300 g sample completely reacts with 20.0 mL of 0.250 M hydrochloric acid. a What mass of sodium carbonate

*asked by Lauren on February 19, 2008* -
## math

1,022,000 species of animals. vertebrates make up 42,000 & invertebrates make up 980,000 species. what is the percentage of animals that are invertebrates? how did you come to this answer?

*asked by brandon on December 21, 2007* -
## Math

From 1980 to 1990 the population of London increased by 6%. From 1990 to 2000, the population of the city decrease by 3%. What was the overall percentage change in the population of London from 1980 to 2000?

*asked by Samiya on January 29, 2017* -
## physics

During an eclipse, the Sun, Earth, and Moon are arranged in a line as shown in the figure below. There are two types of eclipse: (a) a lunar eclipse, when Earth is between the Sun and the Moon, and (b) a solar eclipse, when the Moon is between the Sun and

*asked by sanjeev on November 2, 2011* -
## statistic

A final exam in Math 160 has a mean of 73 with standard deviation 7.73. Assume that a random sample of 24 students is selected and the test score of the sample is computed. Assuming the scores are normally distributed, what percentage of sample means

*asked by Anonymous on September 11, 2016* -
## Statistics

Among first year students at a certain university, scores on the Verbal SAT follow the normal curve; the average is around 550 and the SD is about 100. a) what percentage of these students have scores in the range 400 to 700? b) There were about 1000

*asked by Elise on February 17, 2012* -
## Chemistry

7. A student conducts an experiment on a different hydrate. The empty crucible is heated to a constant mass of 24.330. A sample of the unidentified hydrate is placed in the crucible, and the total mass is 31.571 g. The crucible and hydrate are heated to

*asked by Alan on September 28, 2016* -
## Statistics

The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

*asked by G.C. on September 6, 2013* -
## Statistics

The average life of Canadian women is 73.75 years and the standard deviation of the women's life expectancy in Canada is 6.5 years. Using the Chebyshev's theorem, determine the minimum percentage of women in Canada whose life expectancy is between 64 and

*asked by Cyndee on September 16, 2012* -
## math

HI, I am having trouble working this problem. This is the question: Two measurements are given. Find the absolute difference and then find the rlative difference as a percentage. Assume that the first quantity is the compared value and the second qualitity

*asked by Amy on March 31, 2010* -
## Math Helpppp

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can

*asked by Katy on February 24, 2013* -
## Math Helppp

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can

*asked by Taylor on February 25, 2013* -
## Math 156

1)Suppose you buy 1 ticket for $1 out of a lottery of 3000 tickets. If the prize for the one winning ticket is to be $500, what are your expected winnings? I'm assuming the answer for this one is $0.00 2)A basketball player with a free throw shooting

*asked by jessica on August 7, 2009* -
## 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 on November 12, 2009* -
## World history; Check:P

Human Origins Essay Write a opinion paper on the most significant consequences of the Agricultural Revolution. One of the greatest consequence was that the population increased. The increase of population lead to the need of more clothing. People who were

*asked by Unknown on February 15, 2013* -
## Engineering Statistics

"A study has shown that 20% of all college textbooks have a price of $90 or higher. It is known that the standard deviation of the prices of all college textbooks is $9.50. Suppose the prices of all college textbooks have a normal distribution. What is the

*asked by Christian on October 11, 2011* -
## statistik

can you show me the caculation :) Last year, 50% of MNM, Inc. employees were female. It is believed that there has been a reduction in the percentage of females in the company. This year, in a random sample of 400 employees, 180 were female. a.Give the

*asked by mira on December 2, 2012* -
## Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated

*asked by Deeno on April 8, 2013* -
## Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 _< t _< 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people relocated

*asked by Deeno on April 8, 2013* -
## statistics

2. The National polling organization conducted a phone survey of 850 American adults on what they considered to be the most serious problem facing nation’s public schools; 30% said violence. This sample percent is an estimate of the percent of all adults

*asked by Chris Liberty on October 4, 2013* -
## Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 ¡Ü t ¡Ü 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people

*asked by Wiz on April 9, 2013* -
## Calculus

1. In a certain country, the percentage of the population relocating to a new town is given by the following function: p(t) = 20.6e^-0,009t,where 0 ¡Ü t ¡Ü 52. Time is zero (t = 0) corresponds to the year 1960. 1. Find the rate at which people

*asked by Wiz on April 9, 2013* -
## 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 cost price. b. if a customer bought it for $448, find i. the marked price ii. the actual

*asked by Sayaka on January 31, 2015* -
## Physics

An 80 kg man is put into a tank of water. When completely submerged he displaces 75 L of water. If fatty body tissue has an average density of 0.9 kg/L and non-fatty body tissue has an average density of 1.1 kg/L, what percentage of the man is composed of

*asked by Teagan on May 28, 2014* -
## Math

The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in

*asked by Anonymous on January 31, 2017* -
## Math

The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in

*asked by Ivo on January 31, 2017* -
## Math

The maximum possible score in an exam was 80 and all questions carried equal weightage. For each correct answer 4 marks were awarded whereas for each wrong answer 1 mark was deducted. For no answer, the marks remained unchanged. A student got 57 marks in

*asked by Anonymous on January 31, 2017* -
## Math

The Mulraneys hired a contractor to build an addition to their home. The Contractor proposed a rectangular room with an area of 300 square feet. The Mulraneys asked the contractor to change the area to 363 feet by increasing both the length and the width

*asked by Makenzey on April 19, 2016* -
## Math

Two factory plants are making TV panels. Yesterday, Plant A produced 9000 panels. Ten percent of the panels from Plant A and 3% of the panels from Plant B were defective. How many panels did Plant B produce, if the overall percentage of defective panels

*asked by Sarah on October 7, 2017* -
## Algebra

Two factory plants are making TV panels. Yesterday, Plant A produced 20,000 panels. Ten percent of the panels from Plant A and 3% of the panels from Plant B were defective. How many panels did Plant B produce, if the overall percentage of defective panels

*asked by Mandy PLEASE HELP! on March 21, 2017* -
## Math

Compound Interest A Interest paid on the principal and the interest of a deposit or loan. B Percentage of discount on a purchase C The amount on income taxes paid by a business D Interest paid only on the principal of a deposit or loan Is it d?

*asked by gabby on May 2, 2016* -
## Chemistry

I need to determine the "percentage composition unknown" whatever that is. My current data: a) mass of test tube and foil cover: 7.5323 g b)temp of water bath: 375.65 K c) mass of test tube and foil and gas as sample: 7.5423 g d) barometric pressure:

*asked by Selina on November 4, 2010* -
## Math

While at the skating rink Kris Donna Ralph and Dory ordered a pizza. Kris ate 1/8, Donna ate 3/8, Ralph ate 25%, and Dory 5%. What percentage of the pizza was eaten by group. A.14% b.25% C.40% D.80% I don't know how to solve this one. Identify the group

*asked by Jerald on September 16, 2013* -
## College Algebra

I am having a difficult time with this question. Any help whatsoever will be really helpful as I have been pulling an all nighter for my test at 4pm. The question reads as follows: Suppose that y=[2-log(100-x)]/0.29 can be used to calculate the number of

*asked by Marlon on December 9, 2008* -
## physics

we did a lab and my observation chart is like this when my mass is 1.4 kgs (height is 0.12m,distance is 1.0m,time is 0.87s,velocity is 1.1 m/s ,Eg is 1.6 and the Ek is 0.85) when my mass is 2.14 kgs(height is 0.12m,distance is 1.0m,time is 0.88s,velocity

*asked by chris on November 24, 2014* -
## Chemisrty

H3C6H5O7(aq) + 3Na3HCO3(q)---Na3C6H5O7(aq) + 3H2O(l) + #CO2(g) NaHCO3 = 1.00g H3C6H5O5 = 0.76g CO2= 0.5g 1) show that equivalence amount of cirtic acide for 1.00g of sodium bicarbonate is 0.76g 2)Calculate the theoretical yield of carbon dioxide from 1.00g

*asked by Zaza on October 6, 2016* -
## AP Environmental Science-Ecosystems

1. What are the physical products of cellular respiration? a. Oxygen and carbon dioxide b. Nitrogen and carbon c. Glucose and oxygen d. Glucose and water e. Water and carbon dioxide 2. If the biomass of flowers that support the butterflies was known to

*asked by Emily on October 17, 2017*