According to the law of conservation of energy when a car uses 10000 j of chemical energy from gasoline how much of this energy will be transformed into mechanical sound or heat energy?

Which statement is true about ionic compounds?

May someone me with these science questions

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.