To calculate the amount of heat required to raise the temperature of a substance, we can use the formula:q = mcTwhere q is the heat energy, m is the mass of the substance, c is the specific heat capacity, and T is the change in temperature.In this case, we have:m = 50 g mass of water c = 4.18 J/gC specific heat capacity of water T = 100C - 25C = 75C change in temperature Now, we can plug these values into the formula:q = 50 g 4.18 J/gC 75C q = 50 4.18 75q = 15725 JSo, the amount of heat required to raise the temperature of 50 g of water from 25C to 100C is 15,725 Joules.