2. Iron has a density of 7.86 g/cm). A sample of an unknown metal is measured and found to be 2.25 cm x 1.5 cm x 2.25 cm. The mass of the sample is 55.75 g. Is the sample Iron? Explain.

How many moles are equivalent to 55.5g of nano3

What are the similarities of physical and chemical change ?

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.