139 Answered Questions for the topic Moles

Moles Chemistry

04/05/17

Solve for the correct number of moles (Show Work Please)
Equation: 2H2O2 = 2H2O + O2   Given: .20 mol H2O2 react
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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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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02/08/17

How many moles in 31.0 g of chlorine? (Remember chlorine is diatomic) – Show Work
How many moles in 31.0 g of chlorine? (Remember chlorine is diatomic) – Show Work
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02/08/17

How many moles in 34.2 g of sulfur? – Show Work
How many moles in 34.2 g of sulfur? – Show Work
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Moles Chemistry

11/13/16

How many moles of methane gas CH4 are in a 1.00*10^5L storage tank at STP? How many grams of methane is this? How many grams CO2 gas could the same tank hol
I am needing help answering chemistry homework 
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10/05/16

What is the amount in moles of nitrogen gas found in a 58.0 L compressed gas tank that has a pressure of 89.3 atm at 357 K? - Show Work
What is the amount in moles of nitrogen gas found in a 58.0 L compressed gas tank that has a pressure of 89.3 atm at 357 K?
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09/29/16

Use the combined gas law or ideal gas equation please
How many moles of gas are in a 30.0 liter scuba canister if the temperature of the canister is 300 K and the pressure is 200.0 atmosphere? - Show Work
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09/29/16

Use the combined gas law or ideal gas equation please
It is not safe to put aerosol containers in a campfire because the pressure inside gets very high and they can explode. If a 1.00 liter canister holds 2.00 moles of gas and the temperature of the... more
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09/29/16

Use the combined gas law or ideal gas equation please
If I have a 50.0 liter container that holds 45 moles of gas at a temperature of 200 degrees Celcius, what is the pressure inside the container? - Show Work.
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09/29/16

Solve problem using the combined gas law or the ideal gas law. - Show work
How many moles of gas does it take to occupy 120.0 liters at a pressure of 2.30 atmospheres and a temperature of 340. Kelvin? - Show Work
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06/18/16

Mole fraction?
What is the mole fraction of NaOH in an aqueous solution that contains 15% NaOH (weight/weight%)?
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06/18/16

Mole fraction problem?
If the mole fraction of K2SO3 in an aqueous solution is .0328, what is the weight/weight % (percent by mass) of K2SO3?
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Moles Chemistry

06/08/16

Mole fractions?
What is the mole fraction of LiF in an aqueous solution that contains 39.4% LiF (weight/weight %)?
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04/07/16

How many moles of iron are needed to form 8 moles of iron lll oxide? With 4 Fe + 3 O2 = 2 Fe2O3
 i really just don't understand how to do these problems :/
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03/16/16

How do I work out the molarity and equilibrium constant using moles of reactants?
The equation is C2H5OH(aq) + CH3CO2H(aq) ? CH3CO2C2H5(aq) + H2O(l)   Moles of ethanol: 0.0747 Moles of ethanoic acid: 0.0112   amount of ethanol used in experiment: 4cm3 amount of ethanoic... more
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03/05/16

If I wanted to dilute a 6.2 L, 3M NaNO3 solution to make a 4.7M NaNO3 solution....
How many L of NaNO3 would I need to add?
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