When potential energy changes to kenetic this is called?

What is the energy needed to raise 2.004g of water from 89.0°C to 139.0°C?

Rubidium has two principle isotopes, 85Rb (84.911789 amu) and 87Rb (86.909183 amu). What is the percentage abundance of the lower mass isotope?

In the reaction Fe2O3 + 3CO a 2Fe + 3CO2, 10 moles of solid iron and 15 moles of carbon dioxide are produced from 5 moles of iron (|||) oxide and 15 moles of carbon monoxide (CO). What is the ratio of carbon monoxide to solid iron

You find that 7.36g of a compound has decomposed to give 6.93g of oxygen. the only other element in the compound is hydrogen. if the molar mass of the compound is 34.0g/mol, what is its molecular formula?

A student adds solid KCl to water in a flask. The flask is sealed with a stopper and thoroughly shaken until no more solid KCl dissolves. Some solid KCl is still visible in the flask.

An employee bills customers for the amount of the item or service purchased, but the employee records lower purchases in the ledger and steals the money.

How many grams of NH3 are needed to provide the same number of molecules as in 0.15 grams of SF6

What is the alcohol content of a 20 ounce beer that contains 5% alcohol?

A compound that changes color when it is in contact with an acid or base is called

Is car exhaust flammable?