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3 years ago

The backbone of a sugar molecule is _________

Chemistry

2 answers:

AURORKA [14]3 years ago

8 0

The backbone of a sugar molecule is _________

Answer : a) carbon

Explanation : Sugars are biomolecules consisting of carbon (C), hydrogen (H) and oxygen (O) atoms. They are carbohydrates, so its structure backbone is based in carbon.

Hope this helps!

$\textit{\textbf{Spymore}}$

ANTONII [103]3 years ago

3 0

B. Oxygen. Hope this helps.

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To measure the amount of citric acid (C3 H, oHn a certain candy, an analytical chemist dissolves a 16.00 g sample of the candy i

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Acid-Base reaction (the reactanct acting as a base is NaOH)

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The reaction that takes place is:

C₃H₅O(CO₂H)₃(aq) + 3OH⁻ (aq) → C₃H₅O(CO₂)₃⁻³(aq) + 3H₂O(l)

This is a acid-base reaction, with the citric acid acting as the acid and the sodium hydroxide NaOH acting as the base.

We calculate the moles of citric acid using the information from the titration:

0.0142 L * 0.340 M * $\frac{1molAcid}{3molOH^{-}}$ = 1.609x10⁻³ mol citric acid

Now we convert moles to mass using the acid's molecular weight (192.13g/mol):

1.609x10⁻³ mol citric acid * 192.13g/mol = 0.3092 g citric acid

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3 years ago