# A chemist reacted 0.05 moles of solid sodium with water to form sodium hydroxide solution. The chemical reaction for this is: Na+H2O = NaOH +H2 What mass of sodium was reacted?

Jul 8, 2017

Got a Periodic Table........?

$N a \left(s\right) + {H}_{2} O \left(l\right) \rightarrow N a O H \left(a q\right) + \frac{1}{2} {H}_{2} \left(g\right) \uparrow$

#### Explanation:

Sodium has an atomic mass of $22.99 \cdot g \cdot m o {l}^{-} 1$. How do I know this? Well, for a start it is printed on the Periodic Table, a copy of which will be made available in every examination of chemistry and physics you sit........

And so we take the (dimensional) product..........

22.99*g*cancel(mol^-1)xx0.05*cancel(mol)=??*g, a bit over one gram...........

Typically, questions like these would also ask you to calculate the volume of dihydrogen gas evolved ......... Can you make this assessment?