In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal. She heats 18.5 grams of magnesium to 98.57°C and then drops it into a cup containing 75.7 grams of water at 21.58°C. She measures the final temperature to be 26.02°C. Assuming that all of the heat is transferred to the water, she calculates the specific heat of magnesium to be J/g°C.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.