Areaction between liquid reactants takes place at 11.0°c in a sealed, evacuated vessel with a measured volume of 20.0l. measurements show that the reaction produced 5.0g of sulfur tetrafluoride gas. calculate the pressure of sulfur tetrafluoride gas in the reaction vessel after the reaction. you may ignore the volume of the liquid reactants. be sure your answer has the correct number of significant digits.

The pressure of the sulfur tetrafluoride gas is 0.0536 atm

Explanation:

Step 1: Data given

mass of SF4 = 5.0 grams

Molar mass of SF4 = 108.07 g/mol

Temperature = 11.0°C = 273+11 = 284 Kelvin

volume = 20.0 L

Gas constant = 0.08206  L*atm/K* mol

Step 2: Calculate number of moles SF4

Number of moles = mass of SF4 / Molar mass of SF4

Number of moles = 5.0g / 108.07 g/mol = 0.046 moles

Step 3: Calculate pressure via the Ideal gas law

P*V = n*R*T

P = (n*R*T)/ V

P = 0.046 * 0.08206 * 284 )/20 = 0.0536 atm

The pressure of the sulfur tetrafluoride gas is 0.0536 atm

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 answer is c

tell me if wrong