The equation for the reaction between aluminium and sulfuric acid is:
2Al+3H2SO4→Al2(SO4)3+3H2 2\text{Al} + 3\text{H}_2\text{SO}_4 \rightarrow \text{Al}_2(\text{SO}_4)_3 + 3\text{H}_2 2Al+3H2SO4→Al2(SO4)3+3H2What is the minimum mass, in mg, of aluminium (Ar=27.0A_{\text{r}} = 27.0Ar=27.0) needed to react completely with 45.0 cm3 of 0.800 mol dm-3 sulfuric acid?
6.48×10−16.48 \times 10^{-1}6.48×10−1
6.48×1026.48 \times 10^26.48×102
9.72×1029.72 \times 10^29.72×102
1.46×1031.46 \times 10^31.46×103