1) a metal cube having a mass of 176g is dropped into a graduated cylinder containing 20.00ml of water. this causes the water level to rise to 26.50ml. what is the density of the cube? 2) 69Ga and71Ga are the two naturally occurring isotopes of gallium. the atomic weight of 69Ga is68.9257 amu. the atomic weight of 71Ga is 70.9249 amu. what % distribution of these two isotopes account for the atomic weight of 69.723 amu? Thank you so much!