How much would it cost to buy nails that will be used to build a fence 125 meters long if it requires 30 nails per meter? Assume that 40 nails are sold per box at a cost of P10.75 per box.

Explain what happens at the saturation point when adding salt to water at room temperature.

Give more examples of this type of heat transfer:

The equation below shows a chemical reaction. a + b + heat —> c + d according to the law of conservation of energy, which statement is true? a. the reactants absorb heat because they have less energy than the products. b. the products release heat because they have more energy than the reactants. c. the reactants generate heat because they have more energy than the products. d. the products require heat to form because they have less energy than the reactants.