The specific heat of silver is 0.234 J/(g·K). Calculate the amount of energy that is needed to
raise the temperature of 175 g of silver from 22.5°C
to 40.0°C.

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Why does his teacher ask him to balance the equation by including the correct coefficient