Please show work Answer all calculation questions to the correct number of signi
ID: 523218 • Letter: P
Question
Please show work
Answer all calculation questions to the correct number of significant figures. What pressure m atmospheres corresponds to 720.3 nun Hg? What temperature in K corresponds to 97 degree C? A student performs the experiment and records the following data: Barometric pressure; 741.6 torr Temperature of water bath: 99 degree C Volume of flask; 273 mL Mass of condensed vapor; 0.65 g a. The student calculates the molar mass of the gas to be 2.6 times 10^-5. What mistake did he make? b. What is the molar mass of the gas? Show your calculations. Why it is not necessary to measure the volume of the unknown liquid^t is placed in the flask? Refer to the equation that relates m to the mass of the vapor (w). If either w or T is somehow too large or either P or V is too small, then m will be too large. Give an example of a procedural error that would result in obtaining a molar mass value larger than the true value.Explanation / Answer
1) 1 atm = 760mm/Hg
Thus 720.3 mm /Hg corresponds to 720.3/760 = 0.9477 atm
2) the conversion of Celsius to kelvin is
tC in K is
TK = ( t C +273.15 )
= 97 + 273.15
= 370.15 K
3) b) we know that one molar mass of any gaseous substance occupies 22,400mL iin vapor state at STP.