Question

Calculeaza nr de moli din 1,8 L H2O(mi multe detalii pe poza)
Va rog muuult!
Dau coroana​

Answer 1

Datele problemei:

V = 1,8L H2O

ρ=1kg/L

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MH2O = 2MH + MO = 2*1 + 16 = 2+16 = 18 g/mol

mH2O = V*ρ = 1,8*1 = 1,8kg = 1800g H2O

n = m/M = 1800/18 = 100 moli H2O