Find the energy needed of the system required to change 44g of ice at -13°C to steam at 113°C.

A__ is two or more substances that are together in the same place but are not chemically combined

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided

Correct relationship between molecular formula and empirical formula