A child’s bike containing 5.25 kg of iron rusts according to the thermochemical equation shown here: 4Fe + 3O2 --> 2Fe2O3, Delta H = -1648 kJ

How many kJ of heat will be produced if all of the iron is oxidized? Round your answer to the nearest thousands, such as 25,000. Do not write the units.

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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

The chemical equation below shows the reaction of sodium (na) and chlorine (cl) to form sodium chloride (nacl). 2na + cl2 → 2nacl in this equation, which of the following is a reactant? i. sodium ii. chlorine iii. sodium chloride