What is the enthalpy change for the following reaction? C3H8+3CO2->3CO2+4H2O

One of the cell membrane's functions is to protect the cell keep wastes in the cell create new cells keep light out of the cell

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?