(8) A solid weighing 1.372g containing only sodium carbonate and sodium bicarbonate required 29.11ml of 0.7344M HCl for complete titration; Na2CO3 + 2HCl 2NaCl + H2O + CO2
FM 105.99

NaHCO3 + HCl NaCL + H2O + CO2
FM84.01

im awfully sorry

Explanation:

but i dont knowxndndn

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.