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3 years ago

What is the barometric pressure exerted in pascals (Pa) of a column of decane (density = 0.7300 g/cm3) 636.2 mm in height?

Chemistry

1 answer:

BartSMP [9]3 years ago

5 0

<h3>Answer:</h3>

4551.37 Pascals

<h3>Explanation:</h3>

The pressure refers to the force exerted by a substance per unit area.

The pressure is liquid is calculated by;

P = height × density × gravitational acceleration

In this case;

Height = 636.2 mm

Density = 0.7300 g/cm³

g = 9.8 N/kg

We need to convert mm to m and g/cm³ to kg/m³

Therefore;

Height = 636.2 mm ÷1000

= 0.6362 m

Density = 0.73 g/cm³ × 1000 kg/m³

= 730 kg/m³

Then, we can calculate the pressure;

Pressure = 0.6362 m × 730 kg/m³ × 9.8 N/kg

= 4551.3748 pascals

= 4551.37 Pascals

Therefore, the pressure of the column of decane is 4551.37 Pascals

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