# chemistry

how to find the volume of oxygen at STP from the Deoomposition of 10.8 g of mercuric oxide?

1. 👍
2. 👎
3. 👁
1. 2HgO ==> 2Hg + O2

2. Convert 10.8 g HgO to moles. moles = grams/molar mass.
3. Using the coefficients in the balanced equation, convert moles HgO to moles O2.
4. Convert mols O2 to volume. L = 22.4 L/mol x moles

1. 👍
2. 👎

## Similar Questions

1. ### chemistry

find the volume of a gas at STP, if its volume is 80.0 mL at 109 kPa and -12.5 C

2. ### Chemistry

A gas occupies a volume of 140 mL at 35.0 C and 97 kPa. What is the volume of the gas at STP? N = ( P )( V ) / ( R ) ( T ) N = ( 97.00 ) ( 140 /1000 ) / ( 8.314 ) ( 308.15 ) = 0.005300 gmol V sub STP = ( N ) ( R ) ( T sub STP ) /

3. ### Chemistry

If 0.50L of gaseous CH4 is burned at STP, what volume of O2 is required for complete combustion? Methane burns in oxygen to produce CO2 and H2O CH4(g) + 2O2(g) --> 2H2O(l) + CO2(g) And what volume of CO2 is produced?

4. ### Chemistry

What volume of oxygen gas at STP would be needed for the complete combustion of 39.0 grams of octane ?

1. ### chemistry

Use the molar volume to find the volume, in liters, of 6.40g of O2 at STP.

2. ### chemistry

Mixtures of helium and oxygen are used in scuba diving tanks to help prevent ‘the bends’, a condition caused by nitrogen bubbles forming in the bloodstream. If 95 L of oxygen and 25 L of helium at STP are pumped into a scuba

3. ### General Chemistry

What volume of oxygen gas at STP is needed to react with 5.06 mol of C2H4, according to the following equation C2H4 + 3O2 ----> 2CO2 + 2H2O

4. ### chem stoichiometry

Acetylene(C2H2) burns in oxygen to form carbon monoxide and water. How many liters of oxygen(at STP) are needed to burn 25.0 L of acetylene (at STP)?

1. ### Chemistry

At STP potassium chlorate (KClO3) decomposes to produce solid potassium chloride (KCL) and oxygen gas (O2) according to the balanced chemical equation: 2KClO3(s)->2KCl(s)+3O2(g) What volume of oxygen gas, measured at 40 degrees

2. ### Chemistry

1.The Volume of oxygen required for the complete combustion of 500ML of ethyne at STP..A)2.00ML B)1.25 C)1.71 D)1.00 2.A Chemical Engineer finds that 250ml CuSO4 reacts with excess NaOH to create 2.37g of precipitate.Calculate the

3. ### Chemistry

If the decomposition of potassium chlorate is incomplete assuming all measurements are accurate, what would be the effect on the calculated value for the molar volume of oxygen at STP?

4. ### chemistry

What is the volume of 3.5 moles of oxygen gas (O2) at standard temperature and pressure (STP)? 6.4 L 22.4 L 32.0 L 78.4 L