126 Answered Questions for the topic Moles

05/31/17

A 15.00 g sample of calcium carbonate was placed in excess hydrochloric acid (HCl). A reaction occurred producing calcium chloride, water, and carbon dioxide.

Formula: CaCO3 + 2HCl = CaCl2 + H2O + CO2 (already balanced)   How many moles of CaCO3 reacted? Theoretically, how many grams water should be produced?   Answer both questions, show work... more
Moles Chemistry

05/30/17

1 mole of strontium phosphite contains...

1. How many strontium ions?   2. How many phosphite ions?   3. How many oxygen atoms?   Please show work so I know what you did, thank you
Moles Convert Grams

05/29/17

Convert the following units (Show Work Please)

How many grams are in 5.12 moles of HCN?

05/10/17

2S+3O2=2SO3 is the equation... what mass of molecular oxygen when reacted with excess sulfur will produce 646.97 grams of SO2?

The numbers in the equation are subscripts *in front of compound are coefficients to balance the equation  please show your work, so i can see how you did it(:

05/10/17

How many grams of CO2 would be produced? - Show Work Please

Question: For the balanced equation shown below, if the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced?   Equation: 2C3H6 + 9O2 = 6CO2 + 6H2O

05/10/17

What is the percent yield? - Show Work Please

Question: If the reaction of 20.7 grams of CaCO3 produces 6.81 grams of CaO, what is the percent yield?   Equation: CaCO3 = CaO + CO2

05/10/17

What is the theoretical yield of P4O10? - Show Work Please

Question: 23.9 grams of P4 react with 20.8 grams of O2, how many grams of P4O10 would be produced?   Equation: P4 + 5O2 = P4O10 (already balanced)

05/10/17

What is the theoretical yield of Cl2? - Show Work Please

Question: If 18.3 grams of C2H5 were reacted with 37.3 grams of O2, how many grams of Cl2 would be produced?   Equation: 4C2H5Cl + 13O2 = 8CO2 + 10H2O + 2Cl2 (already balanced)

05/10/17

Theoretical Yield of H3PO4? - Show Work Please

Question: 93.8 grams of PCl5 react with 20.3 grams of H2O. How many grams of H3PO4 would be produced (theoretical yield)?   Equation: PCl5 + 4H2O = H3PO4 + 5HCl

05/07/17

Limiting Reagents (Chemistry) Answer a-d + Show Work Please

Equation: Al2(SO3)3 + 6NaOH = 3Na2SO3 + 2Al(OH)3 (already balanced)   a) If 10.0 g of Al2(SO3)3 is reacted with 10.0 g of NaOH, determine the limiting reagent.   b) Determine the number of... more
Moles

05/05/17

Calculate mass of Zinc Chloride produced if 0.040 moles of hydrochloric acid reacts with excess zinc.

Dilute H Cl was added to zinc until no further reaction occurred. what mass of zinc chloride would be produced if 0.040 mole of H Cl reacted with excess zinc? The answer i got was 1.31 grams of... more

05/05/17

Limiting Reagents (Chemistry) Answer a-d + Show Work Please

Equation: C3H8 + 5O2 = 3CO2 + 4H2O (already balanced)   a) If you start with 14.8 g of C3H8 and 3.44 g of O2, determine the limiting reagant   b) Determine the number of moles of carbon dioxide... more
Moles Chemistry

04/18/17

How many molecules in 1.00 grams of water?

How do you solve this? 
Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)

Equation: Zn + 2HCl = ZnCl2 + H2   Given: .15 mol Zn react
Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)

Equation: 2H2O2 = 2H2O + O2   Given: .20 mol H2O2 react
Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)

Equation: 2AgNO3 + ZnCl2 = Zn(NO3)2 + AgCl   Given: .50 mol AgNO3 react
Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)

Equation: 2Al + 3FeO = 3Fe + Al2O3   Given: .30 mol Al react
Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)

Equation: MgBr2 + Cl2 = MgCl2 + Br2   Given: .25 mol MgBr2 react
Moles

03/17/17

What mole fraction of O2 is converted to O3 by the air purifier?

It is claimed that one such system generates 4.00g O3 per hour from dry air passing through the purifier at a flow of 5.00 L/min. If one liter of indoor air contains .280g of O2.   The ozone... more
Moles

03/16/17

how many moles of carbon dioxide are produced by the complete combustion of the quantity of ethanol 8.80 gallons of E-85 fuel?

E-85 is an alternative fuel for automobiles and light trucks that consists of 85% (by volume) ethanol, and 15% gasoline. The density of ethanol is .79 g/mol.
Moles Chemistry

02/08/17

How many moles would 8.15 x 10^26 atoms of arsenic be? – Show Work

How many moles would 8.15 x 10^26 atoms of arsenic be? – Show Work
Moles Chemistry

02/08/17

How many Volkswagons are there in 1 mole of Volkswagons? – Show Work

How many Volkswagons are there in 1 mole of Volkswagons? – Show Work

02/08/17

How many moles would 7.84 x 10^25 atoms of magnesium be? – Show Work

How many moles would 7.84 x 10^25 atoms of magnesium be? – Show Work

02/08/17

How many grams in 3.91 moles of sodium? – Show Work

How many grams in 3.91 moles of sodium? – Show Work

02/08/17

How many grams in 45.22 moles of strontium? – Show Work

How many grams in 45.22 moles of strontium? – Show Work

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