mol of three gases

Chemistry Level 2

The following three gases are contained in a certain container with temperature $0 ^\circ$ C and pressure $1$ atm. How many moles of gas molecules are in this container? (The atomic weight of O is $16$ .)

1) $12.04 \times 10^{23}$ Nitrogen (N $_2$ ) molecules

2) $11.2$ L of hydrogen (H $_2$ ) gas

3) $16$ g of oxygen (O $_2$ ) gas

1.5 moles 3 moles 3.5 moles 4.5 moles

1 solution

Akshdeep Narula
Feb 25, 2014

no. of moles of N2 = 12.04 x 10^23 / 6.02 x 10^23 ( Each mole has 6.022 x10^23 molecules ) no. of moles of H2 = 11.2/22.4 ( at I bar pressure, and 0 degree C, 1 mole of every gas occupy 22.4 L (approximately) of volume ( Avogadro's law, modified form ) no. of moles of O2 = 16/32 ( 16 x 2 = 32 )

mol of three gases

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