Question #9 Which list has the classes of elements in order from most reactive to least reactive?
Select one:
Bands
A
alkali metal; transition metal: alkaline earth metal
Select
B.
alkaline earth metal; alkali metal; transition metal
B
С
alkali metal; alkaline earth metal; transition metal
(5)
transition metal; alkaline earth metal; alkali metal
D

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)