Molar Mass as a Conversion Factor What is the mass of 3.60 moles of magnesium ch

Question

Molar Mass as a Conversion Factor What is the mass of 3.60 moles of magnesium chloride, MgCl? Express your answer with the appropriate units. View Available Hint(s) s I Penodic Table ber of moles IA ss and number of sulting the hat the molar mass mass of gClValueUnits 58.5 g/mole Submit f NaCI has a ctors are Incorrect; Try Again: 3 attempts remaining | on of 12.0 moles onversion factor ?PartB 702 g How many moles of nitrogen, N, are in 87 0 g of nitrous oxide, N,0 Express your answer with the appropriate units View Available Hints) 63?. Vale Units

Explanation / Answer

ques A) molar mass of MgCl2 = 95.21 g/mol

moles of MgCl2 = 3.6 mol

therefore, total mass of MgCl2 = 3.6x 95.21= 342.76 g

ques B) molar mass of N2O = 44.01 g

moles of N2O = 87/44= 1.98 mol

in one mole of N2O there are 2 moles of N atoms,

therefore, 1.98 mol of  N2O will have 1.98x2 moles of N atoms ,i.e. moles of N = 3.95 mol

ques A) molar mass of FeSO4 = mass of (Fe +S+ 4xO ) = 55.84+32.06+4x16= 151.90 g/mol

ques B) molar mass of Al2O3 = mass of (2xAl + 3xO) = 2x26.98+3x16 = 101.96 g/mol

ques C) molar mass of C7H5NO3S = mass of (7x C + 5xH + 1xN +3xO + S) = 7x 12.01+5x1.01+14.01+3x16+32.06

= 183.19 g/mol

ques D )molar mass of (NH4)2SO4 = mass of (2xN+8xH+S+ 4xO) =2X14.01+8x1.01+32.04+4x16 = 132.14 g/mol

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