Question

convert into mole .(12 gram of oxygen​

Answer 1

Hello ,

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the molecular mass O2 = 32

mole = 12 / 32

mole = 0.375

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Answer 2

12 gram of oxygen

The atomic masses of oxygen (O) and hydrogen (H) can be found in the periodic table: atomic mass of

oxygen (O) = 16.0 g; atomic mass of hydrogen (H) = 1.0 g

molar mass of: 2 x 16.0 g = 32.0 g

So, the conversion factor that we will use for the  mole conversion calculation becomes: 1 mol = 32.0 g

molar mass of : (2 x 1.0 g) + (1 x 16.0 g) = 18.0 g