Question

Name each of the following binary, nonionic compounds: N_2O_3 P_4S_3 OF_2 XeF_4 Give the formula for each of the following compounds: Sulfur dichloride dinitrogen pentaoxide silicon tetrachloride diboron trioxide (commonly called boric oxide) Give the formula for each of the following compounds: bromine trifluoride xenon difluoride hydrazine diphosphorus tetrafluoride butane Calculate the mass, in grams, of each the following: 4.24 mol of gold 15.6 mol of He 0.063 mol of platinum 3.63 times 10^-4 mol pf Pu Calculate the amount (moles) represented by each of the following: 12.08 g of Cu 0.012 g of lithium 5.0 mg of americium 6.75 g of Al. Calculate the amount (moles) represented by each of the following: 16.0 g of Na 0.876 g of tin 0.0034 g of platinum 0.983 g of Xe. you are given 1.0-g samples of He, Fe, Li, Si, and C Which sample contains the largess number of atoms? Which contains the smallest? You are given 0.10-g samples of K, Mo, Cr, and Al. List the samples in order of the amount (moles), from smallest to largest.

Answer 1

Molecular weight of aluminium is 27g/mol

So 2.5 mol is 2.5 x 27 = 67.5 g

0.015 mol of Calcium is 0.6 g

1.25 x 10^-3 mol of Iron = 0.0697 g

653 mol of neon = 13177 g

62) a) gold 835.3 g

b) He 62.4 g

c) Platinum = 12.28 g

d) Pu = 0.0886 g

63) a) Cu Mw = 63.5 g/mol

So 127.08 g/63.5 = 2 mol

b) Lithium = 1.73 x 10^-3 mol

c) Americium = 2.06 x 10^-5 mol

d) Aluminium = 0.25 mol

64) a) Na = 0.695 mol

b) Tin = 7.38 x 10^-3 mol

c) platinum = 1.74 x 10^-5 mol

d) Xe = 7.49 x 10^-3 mol