What mass is associated with a #1/2*mol# quantity of sodium hydroxide?

1 Answer
Jul 7, 2017

Answer:

Well........#"sodium hydroxide"# has a molar mass of #40.0*g*mol^-1#

Explanation:

And thus if we have a #1/2*mol# of #"caustic soda"#, we have a mass of..........

#1/2*cancel(mol)xx40*g*cancel(mol^-1)=??g#

Note the DIMENSIONAL consistency of the answer. We want an answer with units of mass, and the product gives us an answer with units of mass. This is a check on my calculations, and built in detection of possible error on my part in framing the problem......