What is the empirical formula of a substance that contains 0.217 mol of carbon, 0.433 mol of hydrogen, and 0.216 mol of oxygen

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

According to thomson, the atom is a positively charged cloud with electrons scattered throughout. what would the alpha particles do when they hit the foil if thomson were correct

What is the magnitude of the force of gravity between to 1000 kg cars which are separated by distance of 25. 0 km on an interstate highway? the force between the two cars will be what