in a typical person, the level of glucose is about 85 mg/ 100 mL of blood. if an average body contains about 11 pt of blood, how
1 answer:
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Answer:
<u>8.08 × </u><u> atoms of hydrogen</u>
Explanation:
From the given data, we have two categories of variables (unknowns):
- Amount (moles or mass) of Caffeine
- Amount (moles or mass) of Hydrogen
The longer route would be to solve for these variables first, by determining the number of moles of the Caffeine sample (0.134 moles of C8H10N4O2) from the mass of carbon (12.89 g = 1.07 moles in 6.47 atoms) provided. And then solve for the number of atoms of H. <u><em>[N.B: 1 mole of ANY substance = 6.022 × </em></u>
<u><em> atoms ]</em></u>
Alternatively and quicker, we can use the mole ratios of the Carbon:Hydrogen atoms in the compound.
8 : 10 ≡ 4 : 5
If 4 moles -- 6.47 atoms
Then 5 moles -- ?? atoms
⇒ No. of atoms of Hydrogen =
<u>=8.08 × </u><u> atoms of hydrogen</u>
<u>Answer:</u> The correct answer is Option d.
<u>Explanation:</u>
According to Lewis acid-base concept:
The substance which is donating electron pair is considered as Lewis base and the substance which is accepting electron pair is considered as Lewis acid.
For the given chemical reaction:
is accepting electron pair and is getting converted to
. Thus, it is considered as Lewis acid.
present in CuO is a Lewis base because it is donating electron pair.
Thus, the correct answer is Option d.