How many grams are 5.119 x 1023 molecules of copper sulfate?

Calculate the change in entropy if br2(l) is converted into gaseous br atoms. s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

What substance has a mass of 9.5g and volume of 2.1cm^3