3. How many moles of C2H60 are in a 24.5 gram sample? 4. How many moles...

Question

Question

Answer 1

Answer #1

3. The moles of C2H6O are calculated as follows:

moles = mass / molar mass

= 24.5 g / 46.07 g/mol

= 0.532 mol

4. 1 mole of Na3PO4 contains 4 moles of oxygen atoms.

therefore,

2 moles of Na3PO4 will contain 2*4 = 8 moles of oxygen atoms

5. 1 mole of NH3 contains 3 moles of H atoms.

therefore,

2 moles of NH3 will contain 2*3 = 6 moles of H atoms.

1 mole = 6.022*1023 atoms

therefore,

6 moles = 6* 6.022* 1023 = 3.61*1024 atoms

Answer 2

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