what is the molaritt of a solution that was prepaid by disloving 3.0g of CaSO4 in enough water to make 55mL of solution?

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth