1. Mass of flask, boiling chips, foil cap and unknown after cooling reaction 83.350g

2. Mass of flask, boiling chips and foil cap. 82.657

3. water bath temperature C 95.0 C
4. Barometric pressure in Hg 30.09
5. Accepted molar mass of unknown 86.2g/moles
6. Volume of flask 270 mls

Problem

1. Calculate mass of unknown.
2. Express water bath temperature in Kelvin
3. Express barometric pressure in standard atmospheric pressure
4. Express volume of flask in cm3
5. Calculate density of vaporized unknown.

This appears that you want me to do your lab calculations for you. I'll be glad to help you through it if you explain what you don't understand. I can't believe you can't do ANY of it.

1. To calculate the mass of the unknown, you need to subtract the mass of the flask, boiling chips, and foil cap (from statement 2) from the mass of the flask, boiling chips, foil cap, and unknown after cooling reaction (from statement 1).

Mass of unknown = Mass of flask, boiling chips, foil cap and unknown after cooling reaction - Mass of flask, boiling chips, and foil cap
Mass of unknown = 83.350g - 82.657g
Mass of unknown = 0.693g

Therefore, the mass of the unknown is 0.693g.

2. To express the water bath temperature in Kelvin, you simply need to add 273.15 to the Celsius temperature.

Water bath temperature in Kelvin = Celsius temperature + 273.15
Water bath temperature in Kelvin = 95.0°C + 273.15
Water bath temperature in Kelvin = 368.15 K

Therefore, the water bath temperature is 368.15 Kelvin.

3. To express the barometric pressure in standard atmospheric pressure, you need to convert the pressure from inches of mercury (Hg) to atmospheres (atm).

Barometric pressure in standard atmospheric pressure = Barometric pressure in inches of mercury / 29.92
Barometric pressure in standard atmospheric pressure = 30.09 Hg / 29.92
Barometric pressure in standard atmospheric pressure = 1.005 atm

Therefore, the barometric pressure is 1.005 atm.

4. To express the volume of the flask in cm3, you can convert the volume from milliliters (mL) to cubic centimeters (cm3).

Volume of flask in cm3 = Volume of flask in mL
Volume of flask in cm3 = 270 mL

Therefore, the volume of the flask is 270 cm3.

5. To calculate the density of the vaporized unknown, you need to divide the mass of the unknown (from statement 1) by the volume of the flask (from statement 6).

Density of vaporized unknown = Mass of unknown / Volume of flask
Density of vaporized unknown = 0.693g / 270cm3

Note: If you prefer to convert the volume to mL, you need to convert the mass to grams as well.

Density of vaporized unknown = (0.693g / 270mL) * (1g / 1mL)
Density of vaporized unknown = 0.00257 g/mL

Therefore, the density of the vaporized unknown is 0.00257 g/mL.