PLEASE HURRY WILL GIVE BRAINLEST sheila spilled tea on her notes and is now unable to read some words what is the correct title for this section of shelias notes

these are the options
volume
density
weight
mass

what the paper says is it is constant
it is measured with a balance
commen si units include kilograms and grams
will give BRAINLEST

T(s) in2os] (m) 0 185 2.39 546 1.90 725 1.70 the decomposition of n205 can be described by the equation 2.68 given these data for the reaction at 45°c in carbon tetrachloride solution, calculate the average rate of reaction for each successive time interval. ntr s to 185 s 185 s to 546 s 546 s to 725 s number number number reaction rate: m/s m/s m/s