The mole fraction of co2 in a certain solution with h2o as the solvent is 3.6 × 10−4. what is the % mass of co2 in this solution?

Explanation:

1) Basis

Assume 100 moles of solution

2) Number of moles of CO₂ (solute)

3) Number of moles of H₂O (solvent)

4) Mass of solution

a) Mass = number of moles × molar mass

b) Mass of CO₂ = 0.036 mol × 44.01 g/mol = 1.584 g

c) Mass of H₂O = 99.964 mol × 18.015 g/mol = 1,800.85 g

d) Mass of solution = mass of solute + mass of solvent = 1.584 g + 1,800.85 g = 1,802.435 g

5) Percent mass of CO₂, %

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.