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chlorine pentafluoride gas is collected at in an evacuated flask with a measured volume of . when all the gas has been collected, the pressure in the flask is measured to be . calculate the mass and number of moles of chlorine pentafluoride gas that were collected. be sure your answer has the correct number of significant digits.

Respuesta :

ClF5 has a mole concentration of 0.300 moles, or 39.1 grams.

Step 1: Data given

Chlorine pentafluoride gas's starting temperature is -17.0 °C (256 K).

The gas's initial volume is 35.0 L.

The measurement's pressure is 0.180 atm.

Chlorine pentafluoride has a mol mass of 130.445 g/mol.

Step 2: Calculate moles of Chlorine pentafluoride

p*V= n*R*T

n = (p*V) / (R*T)

n = the quantity of moles. To Be Determined Chlorine Pentafluoride

with p = the pressure of the gas = 0.180 atm

with V = the volume of the gas = 35.0 L

with R = the gas constant = 0.08206 L* atm/mol*K

with T = the temperature = -17 °C = 256 K

n = (0.180 * 35.0)/ (0.08206*256)

n = 0.300 moles

Step 3: Calculate mass of ClF5

Mass ClF5 = moles ClF5 * molar mass ClF5

Mass ClF5 = 0.300 moles *  130.445 g/mol

Mass ClF5 = 39.1 grams

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