2Na(s) + 2H2O(l) → 2NaOH(aq) + H2(g)
From the equation above, calculate the mass of sodium hydroxide produced by 2.3g of sodium.
[H = 1, O = 16, Na = 23]

Anela

1 year ago

2NaOH =2(23+17) = 2x40=80
2Na= 2×23 = 46

46g _________80g
2.3g_________x

CROSS MULTIPLY ✖️
=46=80×2.3
= 46x = 184
x=184/46
=4g(ANS)

Boggs

1 year ago

Yes the answer is correct molar mass of 2NaOH = 80
molar mass of Na =46
no of moles =2.3/46=0.05 moles
there fore 0.05 moles of Na = x and 2 moles of Na = 2 moles of NaoH cross multiply x = 0.05 moles
there fore 0.05 *80= mass of NaOH

Tomek05

3 months ago

that was good girl

Abu_Abdallah

2 months ago

aisha

Nzubechinenye12

2 months ago

good