Thursday

April 24, 2014

April 24, 2014

Number of results: 5,892

**science**

what will be the law of conversion of a) 65 grams 70 grams b) magnesium + oxygen = magnesium oxide 45 grams ? grams 80 grams c) sodium hydroxide + hydrochoride acid 40 grams 36.5 grams sodium chloride + water ? grams 18 grams
*Saturday, August 4, 2012 at 12:35pm by Magaly*

**Math**

Maggie's surprise gift weighs between 8.48 grams and 11.25 grams. Which of these weights could be the weight of the gift? 8.19 Grams 8.75 grams 11.47 grams 11.75 grams ~~~~~~~~~~~~~~~~~~~ How would I show my work on paper for this?
*Monday, April 30, 2012 at 7:30pm by Syd*

**chemistry**

Mr. Arswan iss preparing a mixture for a science experiment. He measures 10.5 grams of wood shavings, 150 grams of iron filings, and 18.50 grams of salt. What is the total mass of Mr. Arswan`s mixture? A 30.5 grams B 179 grams C 150.5 grams D 17.9 grams
*Sunday, October 6, 2013 at 6:55pm by na*

**CALCULUS**

The masses of 10 books are found to be in an arithmetic sequence. If their total mass is 13 kg and the lightest book has a mass of 400 grams, what is the mass of the heaviest book? 2,000 grams 2,100 grams 2,200 grams 2,300 grams 2,700 grams
*Tuesday, November 27, 2012 at 11:07am by Chelsy*

**Statistics**

The USDA size standards for eggs are based on weight and are as follows: SMALL: greater than 43 grams, less than 50 grams MEDIUM: greater than 50 grams, less than 57 grams LARGE: greater than 57 grams, less than 64 grams EXTRA LARGE: greater than 64 grams, less than 71 grams ...
*Thursday, March 4, 2010 at 9:00am by Ion*

**Math**

I need to equal $1.00 and 30 grams With quarter .25=6 grams dime .10=2 grams nickel .05=5 grams
*Thursday, October 16, 2008 at 7:33pm by Corey*

**chem**

when hydrocarbons are burned in a limited amount of air CO as well as CO2 form. When 0.450 grams of a particular hydrocarbon was burned in air, 0.467 grams of CO, 0.733 grams of CO2, and 0.450 grams of H20 were formed. a. What is the empirical formula? I got C2H3! check? b. ...
*Friday, August 17, 2012 at 1:19pm by skye*

**Physics**

The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams, oxygen about 32 grams and carbon dioxide about 44 grams. On the average how fast does a molecule of each gas move at 333 Celsius?
*Tuesday, April 6, 2010 at 2:10pm by Benny*

**physics**

The masses of 1 mole of various gases are as follows: hydrogen about 2 grams, helium about 4 grams, nitrogen about 28 grams, oxygen about 32 grams and carbon dioxide about 44 grams. On the average how fast does a molecule of each gas move at 333 Celsius?
*Tuesday, April 6, 2010 at 11:22pm by Plaster*

**Chemistry**

Consider: C6H12)6 + 6O2-> 6CO2 + 6H2O + Energy a)If I have 90 grams glucose and all is consumed by oxygen, then how many grams of water will be produced? b)How many grams of oxygen will be consumed? c)How many grams of sugar will be burned off if 85 grams of O2 is consumed?
*Saturday, January 22, 2011 at 5:59pm by Lindsey*

**Statistics**

Please help, need advise. Thanks A The amount of pyridoxine (in grams) in a multiple vitamin is normally distributed with = 110 grams and = 25 grams. What is the probability that a randomly selected vitamin will contain less than 100 grams of pyridoxine? ì ó B The amount of ...
*Wednesday, July 23, 2008 at 8:17pm by Fiza*

**stat**

1. The amount of pyridoxine (in grams) per multiple vitamin is normally distributed with = 110 grams and = 25 grams. A sample of 25 vitamins is to be selected. So, 95% of all sample means will be greater than how many grams?
*Wednesday, December 1, 2010 at 7:11pm by Anonymous*

**chemistry**

J. J. Berzelius collected the following data for three reactions: Reaction 1 – 11.56 grams of lead sulfide, PbS, were formed when 10.0 grams of lead reacted with 1.56 grams of sulfur Reaction 2 – 11.56 grams of lead sulfide were formed when 10.0 grams of lead reacted with 3.00...
*Wednesday, October 9, 2013 at 2:08pm by Brittney*

**Physics**

Four point masses are arranged on the xy plane as follows. Mass1 = 47.0 grams at x = 2.00 cm and y = 2.00 cm. Mass2 = 55.0 grams at x = 0.00 cm and y = 4.00 cm. Mass3 = 27.0 grams at x = -3.00 cm and y = -3.00 cm. Mass4 = 45.0 grams at x = -1.00 cm and y = 2.00 cm. What is the...
*Friday, November 8, 2013 at 9:34pm by JAYZ*

**math**

13 cents for A 12 cents for B. total protein greater than twelve grams. Total fat less than eight grams. Total grams less than thirty five grams. .5 grams protein and .3 grams fat for A. .6 grams protein and .2 grams fat for B. what is optimal cost
*Tuesday, February 12, 2013 at 8:43pm by Jerome*

**math**

The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30 grams?
*Wednesday, March 21, 2012 at 7:57pm by becky*

**Math**

The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30 grams?
*Friday, March 23, 2012 at 2:15am by Becky*

**Chemistry**

A mettallurgist decided to make a special alloy. He melted 30 grams of Au(Gold) with 30 grams of Pb. This melting process resulted to 42 grams of an Au-Pb alloy and some leftover Pb. This scientist wanted to make 420 grams of this alloy with no leftovers of any reactants. how ...
*Monday, October 31, 2011 at 8:53am by Eli*

**PLZ ANSWER CHEM QUESTION**

a chemist reacted 64 grams of Ru with O2. This reaction produced 160 grams of ruthenium oxide and 4 grams of leftover O2. How much of the reactants would this scientist need to make 320 grams of the product with no leftover O2? Ru + O2 = RuO2 + O2 leftover
*Thursday, November 3, 2011 at 10:29pm by Griffinson*

**Chemistry**

Given this equation: 2P2O5 + 6H2O ---> 4H3PO4. If you begin with 4.8 grams of p2o5 and 15.2 grams h20, what will be your limiting reactant. I got the answer to that and it is P2O5. (6.6 grams) and H2O was 55.2 grams. so the limiting reactant P2O5. Then the next question is ...
*Tuesday, February 5, 2008 at 3:09pm by Franki*

**Chemistrt**

How many grams in 4.00 moles of Fe2O3? Answer 4 Moles Mass = 159.7 grams 4 X 159.7/1 = 6.388 or 6.39 grams. How do you get 6.39X102grams? Fe is +2 and O is –2. you have 2-Fe and 3-O why would this not be 6.39X10-2 grams
*Sunday, December 6, 2009 at 9:21pm by Paul*

**Chemistry**

If 5.0 grams of Zinc were added to 35.0 grams of H2SO4, how many grams of hydrogen gas would be evolved?
*Tuesday, November 19, 2013 at 9:40pm by Elizabeth*

**chemistry**

if i mix 4 grams of hydrogen and 32 grams of oxygen how many grams of water would be produced
*Monday, May 24, 2010 at 2:24pm by kee*

**Science**

How many grams of water must decompose to produce 2 grams of hydrogen and 16 grams of oxygen?
*Wednesday, January 23, 2013 at 6:10pm by Anonymous*

**Chemistry**

16.7 grams of chlorine gas are allowed to react with with 3.31 grams of water What is the maximum amount of hydrochloric acid that can be formed in grams
*Saturday, December 4, 2010 at 4:05pm by Austin Jekins*

**Chemistry**

If 80.0 grams of methane were reacted with 368 grams of oxygen, how many grams of water would be formed (find limiter first).
*Sunday, April 3, 2011 at 7:22pm by Lisa*

**Chemistry**

Question: What mass of water, in grams, would have to be decomposed to produce 17.6 L of molecular oxygen at STP? Work: n=PV/RT x=(1 atm)(17.6 L)/(0.0821)(273 k) x = 1.27348295454546 1.27348295454546 x 2 = 2.54696590909092 Grams= Moles x 18.0 Grams = 2.54696590909092 x 18.0 ...
*Wednesday, July 13, 2011 at 10:15pm by Bradley*

**chemistry**

How many grams of water can be made by the reaction of 1.25 grams of ethanol with 2.50 grams of oxygen?
*Thursday, April 8, 2010 at 9:22pm by Lacy*

**Chemistry**

For the equation below, if 58.6 grams of Al were to react with 540 grams of H2SO4, how many grams of H2 would be produced? 2Al+3H2SO4--->1Al2(SO4)3+3H2
*Wednesday, February 2, 2011 at 12:39am by Eva*

**Math**

If a food item weighs 120 grams and its composed of 77 grams of carbhydrates, 19 grams of fat, and 24 grams of protein, what is its total calorie count? Carbs and protein each provide each provide 4 calories per gram and fats provide 9. Thanks for all who will help.
*Monday, March 12, 2012 at 3:41pm by Dee*

**chemistry**

A mixture containing 50grams of carbon and 75 grams of oxygen is sealed in a flask. The total mass of the system is 225 grams. The flask is heated to cause the carbon and oxygen to react. The sealed flask is massed. What is the mass of the sealed flask? A) 125 grams B) 150 ...
*Monday, January 20, 2014 at 8:29pm by steve*

**Chemistry**

For the balanced equation shown below, if 40.1 grams of C2H3O2Br were reacted with 8.01 grams of O2, how many grams of H2O would be produced? 2C2H3O2Br+O2->4CO+2H2O+2HBr Thank you!
*Thursday, March 3, 2011 at 8:29pm by Lelu*

**Chemistry**

For the balanced equation shown below, if 40.1 grams of C2H3O2Br were reacted with 8.01 grams of O2, how many grams of H2O would be produced? 2C2H3O2Br+O2->4CO+2H2O+2HBr Thank you!
*Thursday, March 3, 2011 at 8:29pm by Lelu*

**chemistry**

What are the accepted values for the number of moles of NaCl that are produced from HCl and the following various amounts of grams of NaHCO3; 0.25 grams 0.5 grams 1 gram Please Help!
*Thursday, March 1, 2012 at 7:22pm by Sharon*

**chemistry**

how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
*Thursday, December 16, 2010 at 8:23pm by mickey*

**chemistry**

how many grams of water can be formed when 28.7 grams of CH4 reacts with 45.8 grams of O2
*Thursday, December 16, 2010 at 8:25pm by mickey*

**chemistry**

Suppose you mix 50 grams of CO and 10 grams of H2. How many grams of methanol can be produced?
*Thursday, July 26, 2012 at 7:57am by james*

**Chemistry**

How many grams of HgBr2 can be produced if 10.0 grams of Hg reacts with 10 grams Br2
*Tuesday, January 29, 2013 at 10:42pm by Chris*

**chemistry**

How many grams of ZnCl2 will be produced from 48 grams of zinc and 30 grams of HCL
*Tuesday, March 26, 2013 at 7:27pm by walter*

**ap chemistry**

What pressure would a mixture of 3.2 grams of O2, 6.4 grams CH4, and 6.4 grams of SO2 exert if the gases were placed in a 5.1 liter container at 127C? Answer in units of atm
*Saturday, February 9, 2013 at 7:55pm by cheri*

**Chemistry**

Given the following equation: Na2O + H2O ---> 2 NaOH. How many grams of NaOH is produced from 1.20 x 10^2 grams of Na2O? How many grams of NaO2 are required to produce 1.60 x 10^2 grams of NaOH?
*Wednesday, March 21, 2012 at 11:42pm by Carl*

**Chem**

For the following reaction, 21.7 grams of diphosphorus pentoxide are allowed to react with with 13.1 grams of water. What is the maximum amount of phosphoric acid that can be formed in grams? What is the FORMULA for the limiting reagent? What amount of the excess reagent ...
*Sunday, May 15, 2011 at 2:35pm by moose*

**AP Chemistry**

What pressure would a mixture of 3.2 grams of O2, 6.4 grams CH4, and 6.4 grams of SO2 exert if the gases were placed in a 4.1 liter container at 127 degrees C? Answer in units of atm
*Sunday, February 16, 2014 at 6:53pm by Gabriella*

**Statistics**

A particular fruit's weights are normally distributed, with a mean of 308 grams and a standard deviation of 31 grams. The heaviest 9% of fruits weigh more than how many grams? Give your answer to the nearest gram.
*Tuesday, April 12, 2011 at 11:27am by Sarah S-Help!*

**Science**

What is the mass (in grams) of water that is produced when 100.0 grams of nitrogen monoxide is reacted with 75.0 grams of hydrogen according tho the following balanced eguation? 2NO + 5H2 = 2NH3 + 2H2O
*Thursday, August 4, 2011 at 11:33am by David*

**chemistry**

2 moles of aqueous Barium Nitrate is combined with 1 mole of aqueous Sodium Sulfate. Assuming 100% yield, what mass of Barium Sulfate precipitate would be produced. 1. 175.043 grams 2. 233.391 grams 3. 466.781 grams 4. 116.953 grams
*Friday, October 21, 2011 at 10:51pm by chelsy*

**Chemistry**

16.7 grams of chlorine gas are allowed to react with with 3.31 grams of water What is the maximum amount of hydrochloric acid that can be formed in grams. What is the maximum amount of hydrochloric acid that can be formed? grams What is the FORMULA for the limiting reagent? ...
*Saturday, December 4, 2010 at 4:31pm by Austin Jekins*

**chemistry**

8. If x grams of S are needed to obtain 0.4 grams of SO3, how many grams of SO2 can be obtained from the same amount of S? (A) 0.32 g (B) 0.62 g (C) 0.40 g (D) 0.16 g (E) Can not be calculated from the given data. I am not sure how to set up this problem. I calculate the ...
*Monday, December 20, 2010 at 9:54am by Anna*

**Chemistry**

Assume that a reaction occurs in which unknown substances R and S react to form unknown substances T and U. From the information below, determine the mass of substance T that will be formed if 45.0 grams of substance R reacts with 23.0 grams of substance S. (Assume that the ...
*Tuesday, May 20, 2008 at 8:07pm by Daniel*

**chemistry**

I need to find how many grams phosphorus (P) are in 0.8645 g sample of MgNH4PO4 x 6H2O How many grams P2O5 can be calculated with this many grams of P What is the percent P (as P2O5) in this
*Monday, June 14, 2010 at 10:11pm by Jamie*

**problem solving**

You purchased 18 karat gold chain that weights 15 grams. How much gold did you purchase in grams? In carats? (1 carat=0/2 grams)
*Tuesday, December 11, 2012 at 12:53pm by ben*

**Chemistry**

!00.0 grams of Na2SO4 reacts with 150.00 grams of Ba(NO3)2to form NaNO3 and BaSO4. How many grams of barium sulfate will form?
*Friday, March 8, 2013 at 12:47pm by David*

**math**

Is a glass of water equal to 30 grams or 300 grams? More likely 300 grams. 30 grms would be nearly two tablespoons.
*Wednesday, April 4, 2007 at 7:56pm by dan*

**chemistry**

What is the maximum number of grams of PH3 that can be formed when 6.2 grams of phosphorus reacts with 4.0 grams of hydrogen to form PH3? P4+6H2-->4PH3. how do i do this question
*Tuesday, June 10, 2008 at 8:36pm by Miley*

**Physical Science**

1. Which equation correctly shows beta decay? (A) 210/82 Pb -> 209/81 Tl + 0/-1 e + y (B) 210/82 Pb -> 209/83 Bi + 0/-1 e + y (C) 210/82 Pb -> 210/83 Tl + 0/-1 e + y (D) 210/82 Pb -> 210/83 Bi + y (E) 210/82 Pb -> 210/83 Bi + 0/-1 e + y 2. The half-life if radon...
*Monday, November 18, 2013 at 2:27pm by CJ*

**math**

Kittens weigh about 100 grams when born and gain 7 to 15 grams per day. If a kitten weighed 100 grams at birth and gained 8 grams per day, in how many days will the kitten triple its weight?
*Wednesday, October 23, 2013 at 6:08pm by Brittney*

**chemistry**

If 7.50 grams 1-butene reacts with 25.0 g oxygen how many grams of carbon dioxide will form? Which reactant is limiting? How many grams of excess reactant will be left at the end of the reaction?
*Thursday, November 4, 2010 at 12:07am by rosa*

**chemistry**

If 20.0 grams of hydrogen and 40.0 grams of nitrigen are combined to form nitrogen trihidride, how many grams of nitrogen trihydride should be formed?
*Monday, March 12, 2012 at 8:14pm by stoi.*

**AP Chemistry**

The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.
*Wednesday, January 23, 2013 at 3:26pm by Katelyn*

**AP Chemistry**

The solubility of sodium nitrate is 32 grams in 50.0 grams of water at 60 degrees C. If 60 grams of potassium nitrate are mixed with 50.0 grams of water, determine the percentage of sodium nitrate that remains undissolved.
*Wednesday, January 23, 2013 at 3:32pm by Katelyn*

**chemistry**

SrH2 (s)+ 2H2O (l) >>> Sr(OH)2 (s) + 2H2 (g) Calculate the mass of hydrogen gas that can be prepared from 5.22 grams SrH2 and 4.35 grams of H2O. I keep getting 0.729 grams but its wrong...
*Saturday, September 19, 2009 at 1:57pm by Some kid*

**chemistry**

2Hg+O2=2HgO if 50.0 grams of mercury reacts with 50.0 grams of oxygen gas, how many grams of mercury(ii)oxide are produced?
*Friday, February 14, 2014 at 2:23am by mom*

**Chemistry**

1.005 grams of potassium iodate is reacted with .5 grams of potassium iodide. THe net ionic reaction is shown below. IO3-+8I-+6H+-->3I3-+3H2O How many grams of the L3- are produced?
*Wednesday, June 3, 2009 at 1:54pm by Juggernaut*

**Chemistry**

100 grams of glucose is mixed with 500 grams of water. 10 grams of yeast is then added to the mixture. If the reaction goes to completion, what is the mass of ethanol in the final mixture?
*Thursday, April 28, 2011 at 1:23pm by William*

**chemistry**

1.How many atoms are in a sample of copper with a mass of 18.46 grams? 2.How many formula units are in a sample of salt with a mass of 67.69 grams? 3.How many molecules are in a sample of water with a mass of 44.99 grams? 4.What is the mass in grams of 0.250 moles Mg? 5.How ...
*Sunday, February 6, 2011 at 7:12pm by grace*

**chemistry**

1.How many atoms are in a sample of copper with a mass of 18.46 grams? 2.How many formula units are in a sample of salt with a mass of 67.69 grams? 3.How many molecules are in a sample of water with a mass of 44.99 grams? 4.What is the mass in grams of 0.250 moles Mg? 5.How ...
*Sunday, February 6, 2011 at 7:12pm by grace*

**Chemistry**

a chemist wanted to make 100 grams of SO2. She had only 12 grams of sulfur and 4 grams of oxygen. Unfortunately, the amounts of reactants were not enough to make the desired product. How much S and O2 would she need in order to obtain the desired grams of product with no ...
*Thursday, November 3, 2011 at 10:04pm by jermain*

**chemistry**

in 2CO(grams) + O2(grams) => 2CO2(grams), what is the ratio of moles of oxygen used to moles of CO2?
*Thursday, January 31, 2008 at 8:37pm by cam*

**chemistry**

1-butanol (shown below) burns in the presence of oxygen to give off carbon dioxide and water by the following reaction: C4H9OH + 6 O2 ==> 4 CO2 + 5 H2O If 40.88 mL of 1-butanol burns completely, how many grams of 1-butanol have burned? grams =33.1 bu then Now, How many ...
*Friday, January 25, 2013 at 9:08am by wll.i.am*

**chemistry**

If a student added 42.6 grams of sodium sulfite to 780.4 grams of water and determined that 3.40 grams of the new solution occupied 3.20ml, what is the weight percent, molality, and molarity of the solution produced?
*Thursday, July 18, 2013 at 6:34pm by Sumaiyah*

**science**

from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O. How many grams of oxygen are necessary to produce 4.50 moles of NO2? I think its 11 grams or 22 grams but im not sure. please help!! First the number of moles of O2, molesO2= (4/7) moles NO2 Notice those came from the ...
*Sunday, March 18, 2007 at 5:25pm by Britney*

**URGENT Chemistry question**

a chemist wanted to make 100 grams of SO2. She had only 12 grams of sulfur and 4 grams of oxygen. Unfortunately, the amounts of reactants were not enough to make the desired product. How much S and O2 would she need in order to obtain the desired grams of product with no ...
*Thursday, November 3, 2011 at 10:17pm by jermain*

**AP Chemistry **

The question asked... Calculate the solubility of calcium sulfate in grams solute per 100 grams solvent. Assume that the volume occupied by the solute in the solution in negligibly small. I solved and got 4.9 x 10 ^-3 mol/L... how do I put this in grams solute per 100 grams ...
*Wednesday, April 21, 2010 at 10:56pm by Allie*

**chemistry**

Aluminum reacts with sulfuric acid, which is the acid in automobile batteries. If 20.0 grams of Al is placed into a solution containing 115 grams of H2SO4, how many grams of hydrogen gas could be produced? Please help--I do not know how to set this one up. Thanks:)
*Saturday, October 20, 2007 at 7:14pm by lucy*

**Chemistry- Solubility Curves**

If 50 grams of water saturated with potassium chlorate at 23*C is slowly evaporated to dryness, how many grams of the dry salt will be recovered? I know that I should know this.. But it has 50 grams of water instead of 100. ): Please, someone tell me how to do this?
*Wednesday, March 10, 2010 at 2:55pm by Rachel*

**statistics**

the birth of healthy, full term infants in the United States is nearly normally distributed. The mean weight is 3,500 grams, and the standard deeviation is 500 grams. (a) what percentage of the healthy newborns will weigh more than 3,250 grams? (b) what weightswould 95% of all...
*Sunday, April 24, 2011 at 6:56pm by ryee*

**Chem**

For the following reaction, 77.9 grams of barium chloride are allowed to react with with 68.8 grams of potassium sulfate. What is the maximum amount of barium sulfate that can be formed in grams? What is the FORMULA for the limiting reagent? What amount of the excess reagent ...
*Sunday, May 15, 2011 at 2:37pm by moose*

**chemistry**

In the following reaction, how many grams of ferrous sulfide (FeS) will produce 0.56 grams of iron (III) oxide (Fe2O3)? 4FeS + 7O2 d 2Fe2O3 + 4SO2 The molar mass of ferrous sulfide is 87.92 grams and that of iron (III) oxide is 159.7 grams.
*Saturday, April 13, 2013 at 2:58am by kerin*

**chemistry**

1. How many grams of P4 will react with 35.0 grams of H2O according to the balanced equation P4+5O2+6H2O=4H3PO4? 2. If you have 50 grams of P4, 40 grams of H2O, and an unlimited supply of O2, which reactant (according to the above balanced equation) is the limiting reactant? ...
*Sunday, October 16, 2011 at 3:45pm by Carly*

**Chemistry**

A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other problem is how do you convert moles to moles as in "how many moles of Cu2O are needed to produce 2.3 ...
*Monday, April 20, 2009 at 5:35pm by Angeline*

**chemistry Emergency TEST**

1.How many moles of sodium oxide are produced when3.9 moles of sodium combine with excess oxygen. 2. Sodium chloride decomposes into elemental sodium and elemental chlorine.How many grams of chlorine will be produced if 39.4 grams of sodium chloride decomposes 3.If 6.7 moles ...
*Thursday, February 14, 2013 at 10:50pm by Christian*

**AP Chemistry**

When a sample of methyl salicylate weighing 5.287 grams is burned in excess oxygen, 12.24 grams of CO2 and 2.522 grams of H2O are formed. What is the empirical formula for oil of wintergreen? I know the answer is C8H8O3, I just need help finding out how to solve the problem. ...
*Tuesday, September 16, 2008 at 7:57pm by R*

**Please help me!!! Chemistry**

Multiple choice When methane is burned with oxygen, the products are carbon dioxide and water. If you produce 18 grams of water from 8 grams of methane and 32 grams of oxygen, how many grams of carbon dioxide were produced in the reaction? a)40 b)22 c)58 D)18
*Tuesday, December 6, 2011 at 10:39pm by Anonymous*

**chem help**

The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are released, how many grams ...
*Monday, April 13, 2009 at 3:42pm by eve*

**chemistry**

for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.
*Wednesday, September 8, 2010 at 7:42pm by Jordyn*

**ap chem**

for the reaction ZnO + 2HCl yields ZnCL2 + H2O, what is the maximum amount of ZnCl2 which could be formed from 17.24 grams of ZnO and 6.87 grams of HCl? answer in units of grams.
*Wednesday, September 8, 2010 at 7:58pm by chris *

**Chem**

f 147 grams of FeS2 is allowed to react with 88 grams of O2 according to the following unbalanced equation, how many grams of Fe2O3 are produced? FeS2 + O2 → Fe2O3 + SO2
*Sunday, September 19, 2010 at 9:19pm by Valarie*

**Chemistry **

85.65 grams of barium hydroxide were dissolved in 2000ml of water. 88 grams of carbon dioxide were passed through the solution producing a white precipitate. what was this white precipitate and how many grams of it were produced.
*Monday, March 26, 2012 at 12:49am by John *

**chemistry**

consider the reaction in which 410 grams of Ca(NO3)2 react with just the right amount of lithium metal in a single replacement reaction. 1-how many grams of lithium are required? 2- how many grams of each product can be produced?
*Monday, February 15, 2010 at 6:28pm by need help*

**chemistry**

2.0 grams of Anhydrous sodium are mixed with 2.0 grams of calcium chloride dihydrate and 2.0 grams of calcium sulfate dihydrate are collected what is the percent yield. DO not round a number if used in a subsequent calculation
*Sunday, October 20, 2013 at 9:39pm by Anonymous*

**Chemistry!**

Calculate the solubility of Ag2CrO4 in grams/100mL of water? (Ksp = 1.12x10^-12 ) I know how to calcuate the molar solubility, and I know how to convert it into grams/L...but I'm stuck on how to make it grams/100mL Any Help would be awesome! =D thx!
*Saturday, August 9, 2008 at 11:54am by Sue Ellen*

**Chemistry**

Ca(OH)2 reacts with CO2 to form CaCO3 and H2O. A. How many grams of CaCO3 will be formed if 4 grams of Ca(OH)2 are used? B. If you have 2.5 grams of Ca(OH)2 and 0.5 of CO2, which is the limiting reactant?
*Thursday, October 25, 2012 at 7:20pm by Charles*

**Chemistry**

How many grams Al and how many grams Cr2O3 should be taken to gain 10g Cr.How many grams of Al2O3 will be spent? Reaction: Cr2O3 + 2Al -> 2Cr + Al2O3
*Sunday, January 20, 2013 at 10:40am by GeneralChem*

**Chemistry**

I am trying to figure out how much 1.134 grams worth of gold will cost, if gold is at 380 dollars an ounce. I set up proportions like this: 380 doll./1.34 grams (how many grams are in an ounce) = BLANK/1.134 grams (mass of coins). I got $321.58. But this is incredibly ...
*Thursday, April 23, 2009 at 10:47pm by Aline*

**HEALTH**

Jane consumed a breakfast that contained 85 grams of carbohydrate, 20 grams of protein, and 18 grams of fat. How many kilocalories did Jane eat at breakfast?
*Friday, February 26, 2010 at 10:44pm by lola*

**Science **

The solubility of Cu(NO3)2 is 6.83 grams per 100 grams of water (d=0.9982 g/ml). How many grams of Cu(NO3)2will dissolve in 175 ml of water?
*Thursday, September 23, 2010 at 12:07pm by Vickey*

**statistics**

The weight of a can made from a machine is normally distributed with a mean of 25 grams and a standard deviation of 0.4 grams. What percentage of the cans from this machine would not meet the minimum required weight of 24 grams? Round to the nearest hundredth of a percent
*Tuesday, November 5, 2013 at 4:49pm by lynda*

**math**

The weight of a can made from a machine is normally distributed with a mean of 25 grams and a standard deviation of 0.4 grams. What percentage of the cans from this machine would not meet the minimum required weight of 24 grams? Round to the nearest hundredth of a percent
*Tuesday, November 5, 2013 at 4:54pm by lynda*

**Chemistry Help!!!!!!**

95.65 grams of barium hydroxide were dissolved in 2000ml of water. 88 grams of carbon dioxide were passed through the solution producing a white precipitate. what was this white precipitate and how many grams of it were produced. explain please!!!! i got so confused with this...
*Thursday, March 29, 2012 at 1:00am by Amber*

**Chem **

The solubility of Cu(NO3)2 is 6.83 grams per 100 grams of water (d= 0.9982 g/ml) How many grams of Cu(NO3)2 will dissolve in 175 ml of water?
*Friday, September 24, 2010 at 8:53pm by SAMMMMMM*

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