32 grams of propane (c3h8) is burned in excess oxygen gas to produce how many grams of water?

There will be produced 52.29 grams of water

Explanation:

Step 1: Data given

Mass of propane = 32.00 grams

Molar mass of propane = 44.1 g/mol

Oxygen = in excess

Step 2: The balanced equation

C3H8 + 5O2 → 3CO2 + 4H2O

Step 3: Calculate moles of propane

Moles propane = Mass propane / molar mass propane

Moles propane = 32.00 grams / 44.10 g/mol

Moles propane = 0.7256 moles

Step 4: Calculate moles of water

The limiting reactant is propane.

For 1 mol of propane consumed, we need 5 moles of O2 to produce 3 moles of CO2 and 4 moles of H2O

For 0.7256 moles of propane consumed we'll have 4* 0.7256 = 2.902

Step 5: Calculate mass of H2O

Mass H2O = moles H2O * molar mass H2O

Mass H2O = 2.902 moles * 18.02 g/mol

Mass H2O = 52.29 grams

There will be produced 52.29 grams of water

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.