Question

Select all true statements.

195 oF is a higher temperature than 100 oC given the same pressure.

The amount of greenhouse gases in the atmosphere have increased dramatically over the last half-century.

The heat of vaporization is the amount of energy needed to convert a substance completely from a liquid to a gas at the boiling point.

Two objects in thermal equilibrium are at the same temperature.

In general, as external pressure increases, the temperature for boiling water decreases.

Answer 1

1)FALSE.

(F-32)/180=C/100

F=farenheit reading=195

C=corresponding celsius scale reading=?

(F-32)/180=C/100

(195-32)/180=C/100

163/18=C/10

C=163x10/18=90.55. Which is less than 100C

2)TRUE

The amount of green house gases are increasing because of outproduct of vehicles , factories etc.

3)FALSE

Heat of vaporisation is the amount of heat required to convert 1kg substance from liquid to gas, (not complete substance)

4)TRUE

When a hot body is mixed with cold body, final equilibrium temperature will be same

5)FALSE

As pressure increases, temperature increases(Charles law)