Calculate how much of the substance is contained in 170g NaSO3.

The amount of substance can be found by the formula n = m / M
Let’s find the molar mass:
M (Na2SO3) = 23 * 2 + 32 + 16 * 3 = 126 g / mol
Substitute the values:
n = 170/126 ≈ 1.349 mol



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