One gram of glass will rise 20° c of heat are applied

3.2 Calories

Explanation:

Here we will use a formula

Heat added in calories = Mass of glass x Increase in temperature x specific heat of glass  

As we know that, specific heat is the amount of energy required to raise the temperature of one gram of any substance by 1°C. It has a constant value for every substance and for glass the specific heat  is .16 calories/gm

Incorporating the values of mass (m), temperature(T) and  specific heat (c) in formula.

     calories (small calories) = l.0 g x 20 degrees x .16 calories/gm/°C

                                                      = 3.2 calories

Hope it helps:)