Question

How many oxygen atoms in 1.00 g of (HCQ)?

Answer 1

C₁₈H₂₆ClNO  

1 mole HCQ contains 1 mole of oxygen

then 336g contains   1 mole oxygen atoms

no of moles=1/336=0.00297 moles

it contains  0.00297× 6.022×10²³ oxygen atoms

=0.0179× 10²³ atoms

Answer 2

Given:

Mass of HCQ (Hydroxychloroquine) = 1 gm

To Find:

The no of oxygen atoms present in the given amount of HCQ.

Calculation:

- The molar mass of HCQ (C₁₈H₂₆ClN₃O) = 335.5 gm

- From the formula of HCQ, 1 mole of HCQ contains 1 mole of oxygen

⇒ No of oxygen atoms in 336 gm HCQ = 1 mole = 6.022 × 10²³

⇒ No of oxygen atoms in 1 gm HCQ = (6.022 × 10²³) / 335.5

⇒ No of oxygen atoms in 1 gm HCQ = 1.795 × 10²¹ (approx.)

- So, there are approximately 1.795 × 10²¹ atoms in 1 gm of HCQ.