Students were given four cubes that are the same size as the one pictured above. Each cube is made of different metals. The masses of the four cubes were recorded in the table below. Complete the table below. Cube NumberMass (g)Volume (cm3)Density (g/cm3)
1503.68
2378.24
3191.36
4567.04
Compare the densities of the cubes to the densities on the following table and determine which cube is made of Iron.

MetalDensity (g/cm3)
Aluminum 2.70
Scandium2.99
Gallium 5.91
Iron7.87
Copper8.86
a
Cube 2
b
Cube 3
c
Cube 4
d
Cube 1

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.