Question

answer all the questions quick​

Answer 1

1. No. of hydrogen atoms in one mole of H₂

2 x 6.022 x 10²³ = 12.044 x 10²³ atoms

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2. Molar mass of Cu = 63.5 g/mol

No. of moles of Cu in 0.3175 g is:

0.3175.63.5 = 0.005 moles

No. of atoms = 0.005 x 6.022 x 10²³ = 30.11 x 10²⁰ atoms

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3. Volume of 1 mole of CH₄ = 22.4 L (it is a standard value bro)

as you know, 1 mole of methane contains: 6.022 x 10²³ molecules

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4. No. of moles of methane = 25/16 = 1.5625

No. of molecules = 1.5625 x 6.022 x 10²³ = 9.409375 x 10²³ molecules

No. of C atoms = 1 x 1.5625 x 6.022 x 10²³ = 9.409375 x 10²³ atoms

No. of H atoms = 4 x 1.5625 x 6.022 x 10²³ = 37.6375 x 10²³  atoms

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Answer 2

Answer:

5) 12.044 x 10^23 atoms

6) 3.011 x 10^21 atoms

7) 6.022 x 10^23 molecules

8) 3.76 x 10^24 atoms

Explanation:

Hope this help you