Write with balanced chemical equations, What happens when a) The water containing calcium bicarbonate is heated?
b) The water containing magnesium bicarbonate is heated?
c) The water possessing permanent hardness is treated with washing soda?
d) The water possessing temporary hardness is treated with lime water?​

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.

може ли да зареждате повече информация, моля

yes the answer is total mass in unchanged   : )