I need help solving the last 5 rows please Data Sheet unknown identification cod

Question

I need help solving the last 5 rows please Data Sheet unknown identification code mass of flask, boiling stone, foil cap, and unknown after cooling, g mass of flask, boiling stone, and foil cap, g mass of unknown, g water bath temperature at complete vaporization, water bath temperature, K barometric pressure, in. Hg barometric pressure, atm volume of flask, mL volume of flask, L density of vaporized unknown, g L molar mass of unknown, g mol average molar mass of unknown, g mol accepted molar mass of unknown, g mol percent error, determina first 78.31 18.111 11, lo 8 o 8 373 373 30.09 inhg 30.09 in atm 1.00 l so 50 mL 0.15 L 0.15 L 41 third 7.lo 8 O. S bo 50 mL

Explanation / Answer

1.Density of unknown , density= mass/ volume

= 0.439/0.15 = 2.93 g/L : SECOND: 0.608/ 0.15= 4.1 g/L , third trail = 0.560/0.15= 3.73 g/L

2. BY using PV=nRT fromula

trail 1. n= 0.005 moles

weight/ molarmass = n (moles)

so molar mass = weight/ moles= 0.439/0.005= 87.8 g/mol (TRAIL 1)

trail2: n= 0.005, mass= 0.608/0.005= 121.6 g/mol : third trail : mass= 0.560/0.005= 112 g/mol

3. Average molar mass of unknown = (87.8+121.6+112)/3= 107.13 g/mol

4. accepted molar mass of silver= 107.86 g/mol

5. PERCENT ERROR= 0.67%

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