How many moles are in 1.204 • 10^24 particles of aluminum

2 moles

Explanation:

Given data:

Number of moles of Al = ?

Number of particles of Al = 1.204 × 10²⁴

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

one mole of Al =  6.022 × 10²³  particles

1.204 × 10²⁴particles× 1 mol /6.022 × 10²³  particles

0.2  × 10¹ mole

2 moles

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

c. is the answer

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