1.

What is the mass of 10 moles of sodium sulphite (Na_(2)SO_(3)) ?

Answer»

SOLUTION :`Na_(2)SO_(3)`
`(Na xx 2) + (1 xx s) + ( 3 xx 0)`
`(23 xx 2) + (1 xx 32) + (3 xx 16)`
`46 + 32 + 48 = 126, 126 xx 10 = 1260 g `
`116 xx 10 xx 6.023 xx 10^(23)`
`1160 xx 6.023 xx 10^(23)`


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