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July 28, 2014

Search: How many grams of CaCl2 would be dissolved in 1.9 L of a 0.19 M solution of CaCl2?

Number of results: 49,936

chemistry
how many grams of Copper (II) sulfate pentahydrate would you use to make 400.0 mL of .750 M solution?
June 13, 2011 by chelsea

Chemistry
What mass of water, in grams, would have to be decomposed to produce 25.1 L of molecular oxygen at STP?
July 22, 2011 by Katie

Chemistry
What mass (in grams)of KNO3 would have to be decomposed to produce 29 L of oxygen measured at STP?
July 29, 2011 by Kyle

Chemistry
Which measuring device in the Laboratory would be most accurately measure the volume of 25.0 grams of water?
August 6, 2011 by Coleen

Science
If 200ml of water were used instead of 100ml,how many grams of the compound would dissolve at 40c
November 1, 2012 by Luda

Molecular calculations (chemistry)
If you had 19 grams of F, how much Ca would you need to convert all of the F to CaF2?
November 13, 2012 by Eliza

chemistry
Acids and Bases: What would be the pH of a solution made by adding 16.9 grams of hydrochloric acid to 2.50 L of water?
November 22, 2013 by Marinas

Chemistry
How many grams of sucrose (molecular weight = 342.3 g/mol) would you dissolve in 350 ml to get a 7% solution?
February 4, 2014 by Rolando

Chemistry
I have a reaction here: 2Na3PO4.12H2O + 3BaCl.2H2O --> Ba3(PO4)2 + 6NaCl + 30H2O and a question: 0.349g of BaCl2.2H2O and 0.624g of Na3PO4.12H2O are dissolved in 500mL of water to form a solution - how many grams of the excess reactant remain after teh reaction has gone to ...
September 25, 2007 by Lacey

Chemistry
A sample of 9.4 grams of NaOH is dissolved into 693 mL of aqueous 0.250 M NaOH (assume no volume change). This solution is then poured into 2.37 gallons of water. (You may assume that the two volumes can be added.) What is the concentration of NaOH in the final solution? ...
October 11, 2010 by May

stoichiometry
Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25 moles of oxygen gas react with an excess of ...
February 9, 2011 by Jonathan

Chemistry
What is the molar solubility of PbCl2 in a solution of 0.23 M CaCl2? Ksp = 1.6 10-5 for PbCl2. idk how to do this because of the Cl2
May 11, 2009 by Jason

chemistry
determine the number of grams of NH3 produced by the reaction of 3.5g of hydrogen gas. 1. Write the equation and balance it. N2 + 3H2 ==> 2NH3 2. Convert 3.5 g H2 gas to mols. mols = grams/molar mass. 3. Convert mols H2 gas to mols NH3 using the equation from step 1. 4. ...
August 11, 2007 by danni

Chemistry
Ethyl butyrate is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst. i) Given 8.45g of butanoic acid and excess ethanol, ...
September 19, 2012 by grangeH

technological institute of the philippines
seventu grams of a piece of iron at 95 degree celsius is dropped into a copper calorimeter containing 150 grams of water at 20 degree celsius. the mass of copper calorimeter is 90 grams the final temperature of the mixture is 25 degree celsius. determine the specific heat of ...
June 26, 2013 by Anonymous

Geometry
On one side of a scale there are 6 coins, 3 weighing 2 grams each and 3 weighing x grams each. The scale is balanced if 5 coins weighing x grams each are placed on the other side of the scale. How much does each of the unknown coins weigh? Answer in units of gram
November 27, 2009 by Chitra

Math
Please help to convert the following(Show work please!!! 1.62500 Grams to kilograms 62500 Grams to Pounds 62500 Grams to Ounces 2.44500 Centimeters to meters 44500 Centimeters to yards 44500 Centimeters to Inches
April 24, 2011 by Mike...

chemestry
For the following reaction, 5.70 grams of hydrogen gas are mixed with excess nitrogen gas. The reaction yields 22.6 grams of ammonia. (1) What is the theoretical yield of ammonia ? ____ grams (2) What is the percent yield for this reaction ? ____ %
November 17, 2010 by cristy

Chemistry
Suppose you tired to carry out a double-replacement reaction by mixing together equal volumes if a solution that contained dissolved NaF and a solution NaCl. Would you expect a reaction, if Si write the balanced chemical equation
April 25, 2011 by Lou

chemisty
In Duluth, Mn the average temperature is -13.10 deg C . How much ethonal glycol, C2H6O2, must be dissolved in 1.00 kg of water to make a radiator fluid that wouldn't freeze until the temp reached -20.00 deg C? would my answer be 666.5 g C2H6O2 ?
February 20, 2014 by Ted

CHEM
A student used 10 mL water instead of 30 mL for extraction of salt from mixture. How may this change the percentage of NaCl extracted? My book says: % NaCl= (grams of NaCl / total grams of mixture) x 100 What I don't get is if it does change the percentage, why? It says the ...
September 4, 2012 by Daisy

science
How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? 1. Write the balanced chemical equation. Zn + 2HCl ==> ZnCl2 + H2 2. Convert grams Zn to mols. mols = grams/atomic mass Zn. 3. Using the ...
March 17, 2007 by Josh

Chemistry
You have a solution that contains 5.0 grams of oxalic acid dissolved in 150 mL of water. This solution is placed in a seqparatory funnel, and the 100 mL of diethyl ether is added to the separatory funnel and an extraction is performed. Use the following constants to calculate ...
October 11, 2011 by BOB

Chemistry
I have to write the equation for the following and I am not figuring it out.I was out with flu and so lost...please help. How many moles of Hydrochloric acid are needed to dissolve 39.0 grams of aluminum Hydroxide? How many grams of precipitate will form a reaction between 10g...
January 17, 2013 by Lost

chemistry
If my original sample contained 7.1 grams of potassium chlorate. How many moles of oxygen gas would I expect to have evolved? Hint: Convert grams to moles of potassium chlorate, then use the mole ratio in the balanced equation. Balance this equation KClO3 → KCl + O2(g) I...
April 1, 2014 by bekah

ap chemistry
what is the molarity of a solution in which 80g of CaCl2 is dissolve in 2.5 L of solution?
December 12, 2010 by cassie

science
show me step by step how to balance 2 H3(PO4)(aq) + 3 CaCl2(aq)
May 13, 2014 by Kelly

Chemistry
Please help me with these! Thanks :) Describe, in detail, how to make 5.5 liters of a 2.5 molar HCl solution from a 10.5 molar HCl stock solution. How many grams of a stock solution that is 85.5 percent H2SO4 by mass would be needed to make 150 grams of a 45.0 percent by mass ...
February 27, 2011 by Amanda

chem
I can't seem to figure this out! I know I have to use mass to mass conversions though. Can someone help me out? Hydrochloric acid can dissolve solid iron according to the following equation: Fe + 2HCl to form FeCl2 + H2 a) How much HCl in grams would you need to dissolve a 2.8...
March 1, 2007 by Abby

10th grade
An unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0C. (the gram formula mass=85.0 grams per mole) Determine the minimum mass of NaNO3 that must be added to this unsaturated solution to make a saturated solution at 20.0...
December 25, 2009 by R

Chemistry
How would I calculate the heat of solution in Joules for dissolving 0.1 mole of NH4NO3 in 100 mL of water? The initial temperature was 22.8 degrees celsius and the temperature after the salt dissolved was 18.1 degrees celsius.
July 24, 2012 by Zach

chemistry
the reaction is......CaCO3+2HCl---->CO2+H2O+CaCl2. what mass of HCl will be neutralized by 0.50g ofCaCO3? How do i figure this out in a non-complicated way??
July 16, 2013 by mimmi

Chemistry
If the 3 moles of Calcium Nitride was then dissolved in 2 L of liquid ammonium what would the molarity of the Calcium Nitride /ammonium solution be?
April 15, 2012 by moata

12 chemistry
What is the average ion concentration in a 7.9 mL saturated solution of calcium hydroxide containing calcium chloride (CaCl2)?
April 24, 2007 by Erica

chemistry
How many milliliters of 0.237 M HCl are needed to react with 52.2g of CaCO3? 2HCl(aq) + CaCO3(s) --> CaCl2(aq) + CO2(g) + H2O(l)
July 6, 2012 by Jason

Chem
The molecular weight of CaCl2 is 110.98 g/mol. In order to make up 500.0 ml of a 0.500 M solution, you need how many g?
July 26, 2012 by Danny

Science
Calculate the molarity of the following solution: 7.48g of calcium chloride (CaCl2) in 215 mL of aquous solution.
October 19, 2012 by Emily

Math
1. A box of crackers has 24 grams of fat. the box contain 8 servings. What is the unit rate? A. 16 grams of fat pre serving B. 8 grams of fat per serving C. 4 grams of fat per serving D. 3 grams of fat per serving 2. A 16-fluid ounce bottle of juice costs $2.00. what is the ...
January 14, 2014 by Math Help

Chemistry
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, , can be titrated against a solution of potassium permanganate, . The following equation represents the reaction: 2KMnO4+H202-> ...
September 18, 2010 by Peter

Math
A can with 40 marbles in it weighted 135 grams. The same can with 20 marbles weighed 75 grams. How much is the weight of the can? Explain your answer.
February 3, 2008 by Valeria

Chemestry
Calculater the amount of heat in kilojoules released when 50 grams of steam at 125 C are converted to 50 grams of ice at -125 C?
October 24, 2008 by Maria

chemistry- stoichiometry problems
Mg+2 NaF-> MgF2+2 Na If you start with 5.5 grams of lithium chloride, how many grams of calcium chloride will be produced?
April 22, 2009 by anon

chemistry
If 1.20 grams of sodium metal are reacted with 4.00mL of water, how many grams of NaOH will be produced (density of water= 1.00g/mL)
September 21, 2009 by Andy

chemistry
Determine the ammoint of lead precipitate in grams that can be produced from 50 grams of ammonium chloride and excess lead II nitrate
March 29, 2010 by Elizabeth

chemistry
What mass, in grams, of sodium hydroxide (NaOH) is produced if 20 grams of sodium metal(Na) reacts with excess water?
April 20, 2010 by Anonymous

Chemistry
Please help with these 2 stoichiometry questions. How many grams of NH3 can be produced from 3.98 mol of N2? How many grams of H2 are needed to produce 10.41g of NH3?
September 27, 2010 by Sarene

chemistry
The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?
October 1, 2010 by Elizabeth

chemistry
The mass ratio of Kr to F in a particular compound is 2.206:1. How many grams of fluorine are present if the compound contains 713.3 grams of Kr?
October 1, 2010 by Elizabeth

Chemistry
how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5 is this correct
October 25, 2010 by Pierre

Chemistry
if 30.0 grams of molten iron (III) oxide reacts with 275 grams of aluminum, what is the mass of the iron produced.
December 5, 2010 by Kalen

chemistry
What is the percent by mass concentration of KCl in a solution prepared by adding 80 grams KCl to 200 grams of water?
October 11, 2011 by Cristina

chemistry
If one atomic mass unit is equal to 1.6606 x 10-24 g, what is the mass in grams of 83549 atoms of Cu? (find in grams)
September 15, 2012 by No one of importance

Stoichiometry
How many grams of oxygen are required to completely burn 85.6 grams of methane (CH4)? CH4 + O2 → H2O + CO2
November 14, 2012 by Mike

Statistics
The eggs of a species of bird have an average diameter of 23 mm and an SD of 0.45 mm. The weights of the chicks that hatch from these eggs have an average of 6 grams and an SD of 0.5 grams. The correlation between the two variables is 0.75 and the scatter diagram is roughly ...
March 15, 2013 by Emily

Chemistry
Please check my answers for the following questions. THANK YOU. 1) The empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen is.... ANSWER: N2O 2) empirical formula of a compound that consists of 4.80 grams of carbon, 1.20 grams of hydrogen, and 2.80 grams of...
August 2, 2007 by anonymous

Chemistry
Calculate the amount of heat in kilojoules released when 50 grams of steam at 125 C are convert to 50 grams of ice at 125 C please help
October 27, 2008 by Joshua

chemistry
What is the theoretical yield in grams of the precipitate starting with 1.250 moles of iron ions (charge is +3) and 60.00 grams of hydroxide ions?
November 7, 2008 by matt

chemistry- stoichiometry problems
C2H4+3 O2->2 co2+2 H2O If you start wit 45 grams of C2H4 how many grams of carbon dioxide will be produced?
April 22, 2009 by anon

Chemistry
a)How many grams of NH3 can be produced from 2.84mol of N2. b)How many grams of H2 are needed to produce 14.86g of NH3? balanced equation: 3H2+N2->2HN3
September 21, 2010 by Amy

chemistry
how many grams of lithium sulfate will be formed when 25 grams of sulfuric acid react with an excess of lithium hydroxide in the following reaction
March 13, 2011 by mary

Chemistry
How many grams of potassium chlorate, KClO3(s) must decompose to produce potassium chloride, KCl(s), and 1.45 grams of oxygen gas?
March 20, 2011 by franci

Chemistry
A student reacts 20.0 grams of sodium hydroxide with hydrochloric acid and obtains 25.0 grams of sodium chloride. What is the percent yield?
April 3, 2011 by Lisa

math
1 ounce= 30 grams about how much does a box of 1,000 paper clips weigh if the empty box weighs 15 grams
May 10, 2012 by Celest

chemistry
The reaction of 9.3 grams of fluorine with excess chlorine produced 4.1 grams of ClF3. What percent yield of ClF3 was obtained?
August 30, 2012 by Nick

ap
The reaction of 5.3 grams of fluorine with excess chlorine produced 4.6 grams of ClF3. What percent yield of ClF3 was obtained? Answer in units of %
August 30, 2013 by Gabriella

chemistry
how many grams of HNO3 can be produced if 225 grams of NO2 is mixed with 55.2 g of H2O? 3NO2 + H2O=2HNO3 + NO
January 24, 2010 by jenny

Chemistry
how many grams of potassium bromide could be recovered by evaporating 650 grams of 15 perentKBr solution to dryness...... 650 * (.15) = 97.5
October 25, 2010 by Pierre

Science
Determine the number of grams of KNO3 which will dissolve in 100 grams of H20 at 100 degrees celscius?
February 9, 2011 by Jessica

chemistry
finding the largest mass of Aluminum chloride that can be formed when reacting with 31 grams of aluminum with 36 grams of chlorine
February 15, 2011 by Anonymous

geometry
The density of a block of wood is 0.78 grams per cubic centimeters. What is the volume of the block if its mass is 28.8 grams?
February 18, 2011 by mariah

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
October 12, 2011 by Anonymous

chemistry
if 30 grams of sodium (Na reacts completey with 28 grams of water, what is the mass of Sodium hydroxide (NaOH)formed?
October 12, 2011 by Anonymous

Chem
calculate the mass in grams of carbon needed to produce 160 grams of CO2 burning. C + O2 -> CO2
December 15, 2011 by Amber

chemistry
For the balanced equation shown below, how many grams of H2SO4 reacted, if 50.9 grams of H2 are produced? Mg+H2SO4=>MgSO4+H2
December 18, 2011 by alesa

Math
Stephanie got a travel pack of 4 aspirin, each 500 milligrams. How many total grams are in the pack 2 grams?
November 6, 2012 by Jerald

CHEMISTRY HWK MAKES NO SENSE
How many grams of C are required to make 464.99 grams of this compound? compound= C3H8
November 29, 2012 by HELP

Chemistry
How many grams of zinc must react to give 13.0 grams of ZnO according to the balanced equation. 2 Zn(s) + O2(aq) --> 2 ZnO(s)
March 18, 2013 by Lindt

Science
43Lb has a half life of 42 minutes. If you start with 100 grams, how many grams will you have after 84 minutes?
January 28, 2014 by Sabrina

chemistry
How many grams of calcium carbonate are required to prepare 50.0 grams of calcium oxide? CaCO3-> CaO + CO2
March 11, 2014 by Kendra

chemistry
to make 100mL of a solution that is .25M in chloride ion, how many grams of MgCl2 would you need to dissolve
September 15, 2007 by samantha

chemistry
o make 100mL of a solution that is .25M in chloride ion, how many grams of MgCl2 would you need to dissolve
September 16, 2007 by samantha

Science
Homw many grams of copper sulfate pentahydrate (CuSo4 5H2O) would you heat to produce 29.8 g of water?
March 9, 2010 by Anne

chemistry
assuming x=1, how much CuSO4.5H20 would you need to prepare 6 grams of copper ammine complex?
March 15, 2010 by jess

Chemistry
How many grams of liquid water can be solidified by the release of 0.75kJ of heat? Would the first step be (0.75 kJ)(1 mol/6.01 kJ) ?? Thanks
May 24, 2010 by Anonymous

science
based on the relationship between mass and volume.... How much space would 75 grams of water occupy?
January 6, 2011 by jake

Science. Please Help!
If you add 4 grams of KCl to 10g of water at 28 C, would the solution be saturated, unsaturated or supersaturated?
February 14, 2011 by Anonymous

Chemistry
How many milliliters of a 2.5 hydrochloric acid solution would be needed to react completely with 32.0 grams of magnesium metal
June 16, 2011 by Kyle

physics
if you raise the temperature of 1000 grams of water by 17 degrees, how many calories of energy would you have added in
September 21, 2011 by cece

Chemistry
How many grams of a 250- g sample of thorium - 234 would remain after 40 days had passed?
October 23, 2011 by Divine

chemistry
the number of grams of KCI per 100g of water that would produce a saturated soluion at 50 degrees C is?
November 15, 2011 by Janet

general chemistry
How many grams of Ammonium Nitrate would you use to make a 500 ml of 5.684 M solution? Answer
September 23, 2012 by Anonymous

general chemistry 2
How many grams of urea [CO(NH2)2] would be required to prepare 200 mL of a 5.0 x 10-3 molar solution? Answer
September 26, 2012 by Anonymous

Chem
How many grams of Ni would be electroplated if a constant current of 7.2 amperes is passed through a solution of NiSO4 for 90.0 min?
March 19, 2013 by George

chemistry
How many grams of H2SO4 are contained in 4.5 L of .30N (N standing for normality) sulfuric acid? Help would be much appreciated.
April 7, 2013 by Daniel

Density of Gas at STP
Hi Can anyone explain how to calculate the density in g l -1 of a gaseous oxide at STP. I dont understand the term g l -1 !! Thank You "g l-1" should have the -1 as a superscript, meaning g l^-1, or g/l. It means they want the density in grams per liter. There are 22.4 liters ...
January 24, 2007 by Freddo

chemistry
what is the maximum number of grams of PH3 that can be formed when 6.2grams of phosphorus reacts with 4.0 grams of hydrogen to form PH3? P4+6H2--> 4PH3
June 9, 2008 by afdsfd

chemistry
If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? Round to the nearest tenth. Don't forget the units.
June 1, 2010 by trcey

12th grade
If you start with 20 grams of hydrochloric acid, how many grams of sulfuric acid will be produced? Round to the nearest tenth. Don't forget the units.
July 15, 2010 by Paris

College Chemistry
If 10.6 mol of carbon monoxide is produced how many grams of carbon were used? How do you convert moles to grams? And what are the steps please for the answer.
October 21, 2010 by Helen

Chemistry
If you start with ten grams of lithium hydroxide, how many grams of lithium bromide will be produced? Round to the nearest tenth. Don't forget the units.
January 9, 2011 by Katie

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