Finding reaction rate [ENDORSED]

[Cristian Carrasco 1F]

when solving reaction rate, do we use grams or moles?

[Kelly Seto 2J]

Always moles for concentrations

[Katelyn 2E]

keep in mind that the rate of reaction is equal to the change in concentration over the change in time. and as said above, concentration is always found in mols

[Jessica Wakefield 1H]

moles because the concentration is molarity which is mol/L
if youre given grams you have to convert to moles and then divide by the amount of liters to find the concentration

[kaushalrao2H]

use mols. in the book, some problems give amounts of a substance in terms of mmol (millimol), but you should try to convert this amount to mols by multiplying this value by 10^3.

[Magdalena Palavecino 1A]

There was a question in which the answer was in mmol. I guess this is ok as long as what you are solving for maintains the units you used.