When 6.7 g of salt are dissolved in 52.1 mL of water, 6888.5 J of heat are given off by the system. How much heat would be given off if only 1.00 g of salt had been dissolved in the water?

the heat absorbed on dissolving 1 g of salt = 1028.13 J

Explanation:

given data

salt dissolve = 6.7 g

water dissolve = 52.1 mL

heat = 6888.5 J

solution

when you dissolve 6.7 g of salt then heat absorbed  = 6888.5 J

and

if dissolve 1 g of salt then heat absorbed = (6888.5 J ÷ 6.7 g) × 1 g

if dissolve 1 g of salt then heat absorbed = 1028.13 J

so that

the heat absorbed on dissolving 1 g of salt = 1028.13 J

if you're asking what comes out, it's steam.