The reaction of magnesium oxide with hydrochloric acid carried out in a calorimeter caused the temperature of water to change from 25.0°C to 46.0°C. In this reaction 4860J of energy was released. What mass of water was present?

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum