Asapwhich of the following would have the greatest mass? 15.0 moles of n5.0 moles of zn20.0 moles of h1.0 moles of pb

In order to find the mass (in grams) of an element, you just need to multiply the no. of moles given by the atomic mass of the element, which can be found in a periodic table.

mass of 15.0 moles of N= 15.0 x 14.0 = 210g

mass of 5.0 moles of Zn= 5.0 x 65.4 = 327g

mass of 20.0 moles of H= 20.0 x 1.0 = 20g

mass of 1.0 moles of Pb= 1.0 x 207.2 = 207.2g

Therefore, since 327g is the greatest mass out of the 4 options, the answer is 5.0 moles of Zn.

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