One mole of compound A, with vapor pressure 420mmHg at 50°C, mixed with 5 moles of compound B, with vapor pressure 480mmHg at 50°C to form a homogeneous solution. What is the vapor pressure of mixture at 50°C?

the vapor pressure of mixture at 50°C is 470 mm of Hg

Explanation:

The computation of the vapor pressure is shown below:

= (420 × 1 +  480 × 5) ÷ (1 + 5)

= (420 + 2400) ÷ (6)

= 2820 ÷ 6

= 470mm of Hg

Hence, the vapor pressure of mixture at 50°C is 470 mm of Hg

The same would be considered

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.

the right answer is c i just did the question.