how many grams are in 3.3 moles of potassium sulfide, k2s?

2017-01-06 6:19 pm

回答 (2)

2017-01-06 6:25 pm

Molar mass of K₂S = (39.0×2 + 32.1) g/mol = 110.1 g/mol

Mass of K₂S = (3.3 mol) × (110.1 g/mol) = 363 g ≈ 360 g (2 sig. fig.)

👍 1 👎 0

2017-01-06 6:33 pm

k2=39*2=78
s=32
78+32=110
so,
110*3.3=363

👍 0 👎 0