Aformer high school teacher was discovered making meth, and the dea recently analyzed some confiscated material from a drug bust he was associated with. they found a compound with the empirical formula c17h14o7 that has a molar mass of 990.87 g/mol. what is the value of n (the multiplier) necessary to find the molecular formula?

3 is the value of n necessary to find the molecular formula.

Explanation:

The equation used to calculate the valency is :

We are given:

Mass of molecular formula = 990.87 g/mol

Mass of empirical formula of :

Putting values in above equation, we get:

3 is the value of n necessary to find the molecular formula.

The molecular formula is :

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.