Which two pairs are isotopes (W)with neutron 6 and proton 6
(x) with neutron 7 and proton 7
(y) with neutron 8 and proton 6
(z) with neutron 8 and proton 8

What is the mass of 8 moles of sodium atoms

If 2 molecules of one reactant combine with 3 molecules of another to produce 5 molecules of a product, then what is the representation of the reaction?

4786 joules of heat are transferred to a 89.0 gramsample of an unknown material, with an initialtemperature of 23.0°c. what is the specific heat of thematerialif the final temperature is 89.5 °c?