can somebody help me plz. the room temperature was 20.04 C and the pressure was7

Question

can somebody help me plz. the room temperature was 20.04 C and the pressure was756.5 atm , the water pressure is 18.7 atm. in the part A first trial the weight of sodium carbonates and sodium bicarbonates was 2.4918 g, the weight of the beaker was 405.12 g . after the reaction done the volume of water collected in beaker was 690 ml. Part A second trial
in the part A second trial the weight of sodium carbonates and sodium bicarbonates was 2.4991g g, the weight of the beaker was 405.16 g . after the reaction done the volume of water collected in beaker was 650ml. plz i just want the answer for the first three questions

Explanation / Answer

1) a) temperature of carbon dioxide collected=room temperature= 20.04+273=293.04K

b)partial pressure of CO2=pCO2=atmospheric pressure -vapour pressure of water

vapour pressure of water=18.7 torr

atmospheric pressure=756.5 torr

pCO2=756.5 torr-18.7 torr=737.8 torr

pCO2=737.8 torr=737.8 torr*(1 atm/760 torr)=0.97 atm

pCO2=0.97 atm

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