Friday

July 25, 2014

July 25, 2014

Number of results: 210

**Chemistry**

The atomic mass of chlorine is listed as 35.454 amu on the periodic table. It has two naturally occurring isotopes, Cl-35 and Cl-37. What are the approximate percentages of each? I have no idea how to figure out the percentages for this. I know how to determine the atomic mass...
*June 14, 2009 by Anonymous*

**Math**

The data shows how a family budgets it's weekly income. It uses percentages and weekly bills in dollars. Which graphs could you choose to display your data? I think the circle graph because your using percentages, and maybe a line graph
*March 11, 2014 by Anonymous*

**math214**

Use the following data to justify the amount of time that you expect to assign for weekly homework to classes in grades K–4 and grades 5–8. National Survey of Teachers Concerning the Amount of Homework Assigned per Week k-4 (percentages) 5–8 (percentages) 0–30 min 48 8 31–60 ...
*September 25, 2011 by darcel78*

**percentages**

what is 1% of £117.
*April 23, 2008 by lol*

**Percentages**

20 is what percentage of 372
*June 30, 2010 by John*

**chemistry**

Calculate the percentages of C,H,and O in C24H44O22.
*February 13, 2011 by twynna*

**chemistry**

Calculate the percentages of C,H,and O in C22H44O22.
*February 20, 2011 by twynna*

**Chemistry**

1. Consider a 1.00g unknown sample that contains 62.0% sodium carbonate and 38.0% sodium bicarbonate, NaHCO3, by mass. When this sample is dissolved in water, how many mL of 0.200M HCl will be required to convert all of the carbonate to bicarbonate? How many mL will be ...
*February 26, 2014 by Mia*

**CONSUMER MATH PERCENTAGES**

WHAT IS THE PERCENTAGE OF $7.30 IF IT USED TO BE $6.50???
*March 10, 2009 by EDGAR*

**psychology**

What is the relationship between z-scores and percentages?
*April 5, 2012 by Betty*

**FACS Project Help!**

I have this project for facs (family and comsumer science) and I really need help. UNIT: Personal Development Topic: The One & Only You! Lesson: The UNIQUE you! Review Question Due Date: 2/15/12 1. Identify - What are four (4) influences that give you a unique indentity? 2. ...
*February 12, 2012 by Laruen *

**English**

is there such a thing the "language" of percentages/surveys?
*October 29, 2011 by Nicole*

**math**

how do architects use fractions, decimals, and percentages???????????
*December 19, 2011 by serina*

**math**

If I have 10 pens and sold 8 which leave me with 8. What is the percentages
*June 29, 2014 by crissy*

**Fundamentals of finance**

"Estimate the weights (wi) for assets in the three portfolios given the following information about the portfolio holdings: " Price Number of securities Market value Portfolio weights Percentages to one decimal place a. Stock A $25 200 500 0.22522523 22.50% Stock B $53 100 ...
*January 12, 2014 by Lori*

**Social Studies**

What are the desirtification percentages in Africa, America, and the world?
*May 21, 2008 by Logan*

**Math**

Express the following as percentages: 15min out of 1hr
*January 16, 2010 by vanessa marie*

**Math**

Express the following as percentages: 15min out of 1hr
*January 16, 2010 by vanessa marie*

**math**

how do you use percentages, fractions, and decimals in zoology and wnba
*December 16, 2011 by serina*

**math**

how do you use fractions, decimals, and percentages in marinebiology and archeology ????? i need help!!!!!!
*December 19, 2011 by serina*

**chemistry**

calculate the percentages by mass of the component element in sodium trioxonitrate(v)
*January 28, 2014 by sam*

**Fundamentals of Finance**

Price Number of securities Market value Portfolio weights Percentages to one decimal place Stock A $25 200 500 0.22522523 22.50% Stock B $53 100 5300 0.23873874 23.90% Stock C $119 100 11900 0.53603604 53.60% Total Value 22200 Price Number of securities Market value Portfolio...
*January 12, 2014 by Chantell*

**math**

mary learned 21 out of the 84 song in her piano book. what percentages of songs did she learn?
*December 25, 2013 by Shohanur*

**finances**

Where can I find the percentages of uncollectabes for PepsiCo? I have looked at the annual report atleast 20 times. Please Help. Thanks
*December 18, 2009 by carol*

**chemistry **

2 Na2 + @H20 -> 4NaOH + 02 Whtes 200. g of Na202 were reacted, 32.0g of 02 were collected The yield of 02 colleced how many percentages?
*December 5, 2010 by dody*

**percentages/word problem**

A wholesaler buys plastic lamps for $18 each and sells them for $30.60. What is the percent markup based on cost?
*April 3, 2014 by Anthony*

**Algebra**

The following table gives the winning percentages of the top five coaches in NFL history. What fraction of his games has each coach won?
*March 19, 2008 by Linda Wortham*

**statstic**

• Suppose you were preparing two way tables of percent ages for the following pairs of variables .how would you run the percentages?
*August 17, 2012 by Anonymous*

**math**

which of the following involves a process of "trial and error"? a. simplying fractions b. changing percentages to decimals c. metric conversions d. reading musical notes
*October 7, 2008 by zaira*

**math**

which of the following involves a process of "trial and error"? a. simplying fractions b. changing percentages to decimals c. metric conversions d. reading musical notes
*October 7, 2008 by zaira*

**college percentages **

One number exceeds another by 24. The sum of the numbers are 58. What are the numbers? please help!
*October 22, 2012 by Gene*

**Math**

I am trying to find the percentages of different numbers. How do i find them? for example 83%of 6
*February 27, 2009 by Mark*

**ashworth**

Commercial banks are required by law to hold reserves. These reserves are specified as percentages of a bank's
*August 24, 2011 by Anonymous*

**Percentages**

To find out your grade on a calculator? you just divide your score out of the number of questions, right?
*March 30, 2011 by Allyson*

**percentages/word problem**

Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down?
*April 3, 2014 by Anthony*

**Chemistry**

An unknown element Q has two known isotopes: 61Q and 62Q. If the average atomic mass is 61.4 amu, what are the relative percentages of the isotopes?
*January 27, 2011 by Sam*

**Chemistry**

An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?
*February 13, 2011 by Ashley*

**Chemistry**

An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?
*February 13, 2011 by Ashley*

**Stats**

Could someone please explain to me how I would read a z table. I have a z score of 2.2 and I need to know what the percentages is. Then if I'm given 8% how do I find the z score?
*March 5, 2013 by Bonnie*

**MATH HELP**

14000 ACRES OF LAND 12% IS PATIO 25% LIVING SPACE AND REST IS LAWN SQUARE FOOTAGE FOR EACH PORTION OF LAND USING PERCENTAGES
*January 13, 2008 by Anonymous*

**MATH PERCENTAGES**

HOW TO FIND THE PERCENT SAVED DIFFERENCE OF 310,951.00 ALLOWED 214,546.60 USED ----------- 96404.40 TOTAL SAVED
*June 30, 2010 by ELTINYO VT*

**Math**

The following table gives the winning percentages of the top five coaches in NFL history. What fraction of his games has each coach won? Don Shula 0.676 George Halas 0.672
*January 14, 2009 by Jan*

**economics**

where can I find current gross domestic product percentages to consumption, investment, defense and foreign trade for Germany & Switzerland for the past five years so I may analyze the info
*February 21, 2011 by Eileen *

**Math **

Barone’s Italian Restaurant advertises that its customers are much happier than the customers of its main competitors. The claim is based on the results of a customer satisfaction survey Which statement best describes why the graph is misleading? Barone’s rating looks better ...
*October 11, 2012 by Lily*

**statistics**

What percentages of students studied 30 hours or less? These hours ranged between 10-50 hours with a mean of 35 and a standard deviation of 5.
*October 14, 2010 by kim*

**statistics**

What percentages of students studied 30 hours or less? These hours ranged between 10-50 hours with a mean of 35 and a standard deviation of 5.
*October 14, 2010 by kim*

**Math :)**

I have to work with percentages and I don't know how to figure this word problem out. John saved 23.97$ by purchasing boots at "30% off sale". Find the origianl price of the boots.
*November 9, 2008 by anjelika*

**percentages/word problem**

A refrigerator costs a company $1,600 to manufacture. If it sells for $3,456, what is the percent markup based on cost? (Round to the nearest whole percent.)
*April 3, 2014 by Anthony*

**percentages**

Hi I want to know what one amount is a percentage of another example what is 0.74 and a percentage of 4.91 thanks What is the percentage of .74 of 4.01? percent= .74/4.02 * 100 Thank You !!!!!!
*October 2, 2006 by ron*

**math**

What are the percentages of 80 000, 118 000,105 000and 138 000.
*June 24, 2008 by Bongani Creswel Pasile*

**chemistry**

Mechanism for the reaction between 3-methyl-2-pentene and HCl. is this right? %img836.imageshack.us/i/questionk%.jpg/% * delete the percentages for the link to work, its the only way i could post a link
*February 19, 2011 by ben*

**AP Chem**

Combustion of 6.38 mg of ethylene glycol gives 9.06 mg CO2 and 5.58 mg H20. The compound contains only C, H, and O. What are the mass percentages of the elements in ethylene glycol?
*October 5, 2008 by Anna*

**chemistry**

2 Na202 + 2H20 -> 4NaOH + 02 When 200.g of Na202 were reacted, 32.0 g of 02 were collected. The yield of 02 collected was (how many percentages)
*December 7, 2010 by andy*

** Present Value of **

The present value percentages are located on page 191 of Chapter 7, Table 7-2, in the 12% column.
*May 16, 2011 by Anonymous*

**percentages**

I am having a bit of trouble with a problem similar to this one can someone explain.... An employees salary is $27,197 after getting a 5% raise what was his salary before the raise?
*May 22, 2008 by Please Help*

**Chemistry**

a sample of natural gas is 85.2% methan, CH4, and 14.8% ethane, C2H6, by mass. What is the density of this mixture @ 18C and 748mmHg. so i know that i have to use this formula d=(PM)/(RT) but i dont know how to convert the percentages into g/mol (molecular weight) can someone ...
*August 4, 2011 by Henry*

**math**

In a problem on percentages there are three quantities that are involved. These are the base, the amount, and the rate percent. Express the relation between them in the form of an equation and explain with examples how to find each one of them given the other two quantities.
*June 22, 2012 by leila*

**math**

In a problem on percentages there are three quantities that are involved. These are the base, the amount, and the rate percent. Express the relation between them in the form of an equation and explain with examples how to find each one of them given the other two quantities
*October 19, 2012 by cecelia*

**math**

In a problem on percentages there are three quantities that are involved. These are the base, the amount, and the rate percent. Express the relation between them in the form of an equation and explain with examples how to find each one of them given the other two quantities
*October 19, 2012 by cecelia*

**statistics**

A fertilizer mixing machine is set to give 4 kg of nitrate for every quintal bag of fertilizers. Five 100 kg bags are examined. The percentages of nitrate are: 2, 6, 4, 3, 1. is there reason to believe that the machine is defective?
*November 17, 2013 by nidhi*

**ms.sue**

can you give me an easy way how to find percentages these ways: _____% of ___?_____ = ___?____ __?___ of ________=_________
*April 10, 2012 by Celest*

**Excel Help**

To display items in a chart based on percentages, use a __________ chart. box pie cluster column Is the answer a box chart?
*July 12, 2009 by Bryan*

**Math/Nutrition**

I need to figure out percentages of total calories that come from carbohydrates. I do not know the formula for this. There are 29 grams of carbohydrates and 116 calories from carbohydrates.
*September 3, 2011 by Anonymous*

**Math**

The following table gives the winning percentages of the top five coaches in NFL history,what fraction of his games has each coach won? Don Shula 0.676 George Halas 0.672 Tom Landry 0.606 Curly Lambeau 0.624 Paul Brown 0.667
*December 16, 2008 by Shirley*

**Understanding percentages **

Check my answer,, A store advertises a shirt at 25% off the original price of $44. What is the sale price? MY ANSWER: $33.00 What is the percentage increase in high school enrollment from 1,165 students to 1,320? MY ANSWER: 13.3%
*April 12, 2012 by Anonymous*

**math**

Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)
*May 16, 2013 by November*

**math**

Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)
*November 13, 2013 by shawn*

**chemistry**

the percentages of carbon,hydrogen and oxygen in vitamin c were determined by burning a sample weighing 2.00mg,the masses of carbondioxide and water formed are 3.00mg and 0.81mg respectively.from these information,find the percentage of each element and the emperical formular ...
*October 28, 2009 by yankoua*

**Business Math**

Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.)
*August 15, 2013 by Tammy*

**percentages/word problem**

Beacon Electronics advertised a portable TV set on sale for $272.49 after a 35% markdown from the original price. What was the original price of the TV set? (Round to the nearest cent.
*April 3, 2014 by Anthony*

**science**

Two machines A and B produce respectively 60% and 40% of the total number of items of a factory. The percentages of defective output for A and B are 3% and 2% respectively. Suppose an item is selected at random, and is found to be defective. The probability that the item was ...
*July 23, 2012 by chinthaka*

**Chemistry**

I've calculated my % yield for 2 experiments, the second one using the final product of the first one. How would I calculate the "total % yield" like my T.A. wants? Would I just add both percentages up and divide by 200?
*July 17, 2013 by Jackson*

**science**

A segment of double-stranded DNA contains 31% Adenine (A) bases. a. What are the percentages of the other three bases in the DNA segment? (Count bases on both strands.) C: T: G:
*September 28, 2011 by Ellen*

**Math (percentages)**

I transferred $1.50 to a friend on paypal. The friend was charged a $.34 cent fee and received only $1.16. How much of a percentage was the friend charged to receive the transfer? I have tried doing: (100 * .34) / 1.50 = 22.66 and (1.16/1.50) * 100 = 77.33
*April 7, 2009 by Ty*

**Chemistry**

For a system where: NH2OH + CH3NH3+ --> CH3NH2 + NH3OH+ 95% 95% 5% 5% State of equilibrium in the system is described by the percentages given above.Which of the species above is the strongest acid in the system? My answer is CH3NH3+, is it correct?
*March 28, 2012 by Meenaakshi*

**science**

percentages a servings= of cereal jas 22 calories from fat. twenty percent of the cereal's calories from fat. how many total calories are in a serving of this cereals?
*September 12, 2007 by kim*

**math**

Statistics. The following table gives the winning percentages of the top five coaches in NFL history. What fraction of his games has each coach won? Coach Percentage Don Shula 0.676 = George Halas 0.672 = Tom Landry 0.606 = Curly Lambeau 0.624 = Paul Brown 0.667 =
*June 25, 2008 by dawn*

**Chemistry**

Determine the molar mass of the unknown acid.? A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O.
*December 5, 2009 by Kyle*

**Chemistry**

Determine the molar mass of the unknown acid.? A 0.167-g sample of an unknown acid requires 27.8 mL of 0.100 M NaOH to titrate to the equivalence point. Elemental analysis of the acid gives the following percentages by mass: 40.00% C; 6.71% H; 53.29% O.
*December 6, 2009 by Kyle*

**Chemistry**

I am supposed to find the percent abundancies of two isotopes. I am given the masses of both isotopes, along with the atomic mass. (This is a fictional element with only those two isotopes.) I am not given percentages for either isotope... how do I solve this?
*September 8, 2008 by Liz*

**percentages/word problem**

The Quick Plumbing Supply sells a set of faucets for $79.75. If a 45% markup based on cost was used, what was the cost of the faucets to Quick Plumbing? (Round to the nearest cent.)
*April 3, 2014 by Anthony*

**Math**

How do you figure percentages? Question: If a factory worker is supposed to produce 1000 units an hour but only produces 568 units, what percentage did the worker produce? How do you figure this?
*September 29, 2007 by Tim*

**Math**

Three of every seven sales transactions at Dollar Discount are on credit cards. What percent of the transactions are NOT credit card sales? (Round percentages to the nearest tenth.) Answer: 57.1% Is this answer correct?
*May 13, 2013 by Sue*

**Chemistry**

The isotopic abundance of naturally occurring hydrogen is as follows: 1H 99.985 atom % 2H 0.015 atom% When H2 gas is formed from naturally occurring hydrogen, what percentages of the molecules have molecular weights of approximately 2, 3 and 4?
*October 1, 2013 by Jane*

**percentages/word problem**

The Sweet Candy Shop buys 600 pounds of chocolate covered strawberries at $5.59 per pound. If a 10% spoilage rate is anticipated, at what price per pound should the strawberries be sold in order to achieve a 60% markup based on cost?
*April 3, 2014 by Anthony*

**Math percentages**

Is this right?? 10 + 7 = 17/100 = 41.2 % 100 + 92 = 192/100 = 1.92 % 15 + 13 = 28/100 = 1.25 % 28 + 22 = 50/100 = .5%
*October 18, 2013 by Toby*

**Economics**

What is kenyas factor of production for their land and labor? Which means what percentage do they use their land for what. For te labor it means what labor occurs their, whether it be physical or mental labor. I need details as well as percentages for both. I would really ...
*November 11, 2012 by Anonymous*

**Chemistry**

A comparison of density values obtained by X-ray diffraction reveals that the percentages of vacant sites in aluminum (Al) are 0.0700% at 923 K and 0.0090% at 757 K. Given this data, determine the number of vacant sites per cm3 at 550 K. Express your answer as vacancies/cm3.
*May 30, 2013 by Jma*

**Chemistry**

A comparison of density values obtained by X-ray diffraction reveals that the percentages of vacant sites in aluminum (Al) are 0.0700% at 923 K and 0.0090% at 757 K. Given this data, determine the number of vacant sites per cm3 at 550 K. Express your answer as vacancies/cm3.
*May 30, 2013 by Jma*

**chemistry**

A comparison of density values obtained by X-ray diffraction reveals that the percentages of vacant sites in aluminum (Al) are 0.0700% at 923 K and 0.0090% at 757 K. Given this data, determine the number of vacant sites per cm3 at 550 K. Express your answer as vacancies/cm3.
*June 1, 2013 by Anonymous*

**Maths**

The earth is approximately a sphere of average diameter 12740km. The smallest of the planets is Mercury, also spherical, with average diameter 4840km. Determine what percentages (to the nearest hundredth) the volume and surface area of Mercury are of those of the Earth.
*January 12, 2012 by Jiskhaa*

**Essay **

I need to do an essay but need to know if it is usually blank percent rainy or blank persent sunny usually in Port Saint Lucie? Can you help or give me a website that gives me percentages on how it usually is.
*January 3, 2012 by Rob*

**Chemistry**

Xenon of mass 5.08 g reacts with fluorine to form 9.49 g of a xenon fluoride. What is the empirical formula of this compound? A) XeF6 B) XeF4 C) XeF2 D) XeF E) Xe2F I am not familiar with these types of empirical formula problems. If I'm given the percentages of the elements ...
*March 23, 2009 by Olivia*

**Math**

What was the percent increase in the population in S.America from 1900 to 2000? 1900 = 38,000,000 1950 = 111,000,000 2000 = 515,000,000 Can someone please help guide me?? I am not great at percentages.. would I add the three and then divide by 3?
*August 28, 2009 by Anonymous*

**statistics**

what fraction of games won? percentages 0.676 0.606 0.624 0.667 0.672 1/2 of the games With the limited data given, I don't know how Daniel came to his conclusion. More data is needed. Please respond with the complete information for the problem, and we will do our best to ...
*March 7, 2007 by patti help*

**SCIENCE 8R - HELP!**

...G.....g G..GG...Gg g..Gg...gg G - Blue g - Black G - Dominant g - recessive Homozygous - ????????? Heterozygous - ??????? Please help ..... I need to find the percentage of Homozygous and Heterozygous and find which on is Homozygous and Heterozygous! (I have to make up a ...
*March 31, 2013 by Lauren *

**percentages/word problem**

The Soft Step Floor Company purchases carpeting for $5.12 per square yard and marks it up 55% based on the selling price. What is the selling price per square yard? (Round to the nearest cent.)
*April 3, 2014 by Anthony*

**Algebra**

The bar graph which is 4% whole mil, 8% milk for cream and 30% cream shows the milk fat percentages in three dairy product s. How many pounds each of whole milk and cream should be mixed to form 200 lb of milk for cream cheese?
*April 17, 2014 by Anonymous*

**statistics**

Assume that a set of test scores is normally distributed with a mean of 100 and a standard devaiton of 20. Use teh 68-95-99.7 rule to find the following quantities: a. percentages of scores less than 100 b. relative frequency of scores less than 120 c.percentage of scores ...
*July 19, 2010 by terry*

**statistics**

The actual weights of bags of pet food are normally distributed.The mean of the weights is 50.0lb,with a standard deviation of 0.2lb. Sketch a normal cuve for the distribution.Label the x-axis at one,two,and three standard feciation from the mean,in addition label all the ...
*June 4, 2012 by Anonymous*