Question

One mole of (NH4)2Cr2O7 contains
A) one mole of nitrogen (B) four moles of H2
one mole of chromium (D) seven moles of oxygen​

Answer 1

Answer:

the correct option is a

Answer 2

One mole of $(NH_4)_2Cr_2O_7$ contains ​4 moles of hydrogen gas  $(H_2)$

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

1 mole of $(NH_4)_2Cr_2O_7$ contains = 2 moles of nitrogen atom or 1 mole of nitrogen gas

1 mole of $(NH_4)_2Cr_2O_7$ contains = 8 moles of hydrogen atom or 4 moles of hydrogen gas

1 mole of $(NH_4)_2Cr_2O_7$ contains = 2 moles of chromium

1 mole of $(NH_4)_2Cr_2O_7$ contains = 7 moles of oxygen atom or $\frac{7}{2}$ oxygen gas

Learn more about molecular formula

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