HELIUM GAS IS MONOATOMIC - WHAT WILL BE THE MASS OF 6-022 X 1024ATOMS IN HELIUMrn

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Standard IX

Chemistry

Carbon

HELIUM GAS IS...

Question

HELIUM GAS IS MONOATOMIC . WHAT WILL BE THE MASS OF 6.022 X 10²⁴ATOMS IN HELIUM
rn

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Solution

Given:
Number of atoms in He gas = 6.022 X 10²⁴
Molar mass = 4u
Number of atoms = ( mass / molar mass) * Avogadro number
6.022 X 10²⁴= ( mass / 4) * 6.022 * 10²³
Mass = ( 6.02210²⁴ / 6.02210²³ ) * 4
= 40g
So. 40g He gas contains 6.022*10²⁴ atoms.

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HELIUM GAS IS MONOATOMIC . WHAT WILL BE THE MASS OF 6.022 X 1024ATOMS IN HELIUMrn

Given:Number of atoms in He gas = 6.022 X 1024Molar mass = 4uNumber of atoms = ( mass / molar mass) * Avogadro number6.022 X 1024 = ( mass / 4) * 6.022 * 1023Mass = ( 6.022*1024 / 6.022*1023 ) * 4= 40gSo. 40g He gas contains 6.022*1024 atoms.

HELIUM GAS IS MONOATOMIC . WHAT WILL BE THE MASS OF 6.022 X 10²⁴ATOMS IN HELIUM
rn

Given:
Number of atoms in He gas = 6.022 X 10²⁴
Molar mass = 4u
Number of atoms = ( mass / molar mass) * Avogadro number
6.022 X 10²⁴= ( mass / 4) * 6.022 * 10²³
Mass = ( 6.02210²⁴ / 6.02210²³ ) * 4
= 40g
So. 40g He gas contains 6.022*10²⁴ atoms.