Question

Number of H in 3(NH4)2Cro4

Answer 1

The number of H atoms in 3(NH₄)₂CrO₄ = 24

Further explanation  

The empirical formula is the smallest comparison of atoms of compound forming elements.  

A molecular formula is a formula that shows the number of atomic elements that make up a compound.  

(empirical formula) n = molecular formula  

Subscripts in the chemical formula indicate the number of atoms

The compound of 3(NH₄)₂CrO₄ ( 3 molecules of (NH₄)₂CrO₄ ) :

Number of H :

$\tt 4\times 2(subscript)\times 3(coefficient,number~of~molecules)=24~atoms$

Answer 2

The number of Hydrogen (H) atoms in the compound, 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms

How to determine the mole of H

• Mole of 3(NH₄)₂CrO₄ = 1 mole
• Mole of H in 3(NH₄)₂CrO₄ = 3 × 8 = 24 moles

How to determine the number of atoms

From Avogadro's hypothesis,

1 mole of H = 6.02×10²³ atoms

Therefore,

24 moles of H = 24 × 6.02×10²³

24 moles of H = 1.44×10²⁵ atoms

Thus, the number of atoms of H in 3(NH₄)₂CrO₄ is 1.44×10²⁵ atoms

Learn more about Avogadro's number:

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