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Free_Kalibri [48]
3 years ago
5

All of the following are true of carbohydrates except

Chemistry
2 answers:
Minchanka [31]3 years ago
8 0

<u>Answer:</u>

The correct answer option is 3. they make up larger compounds like fats and amino acids.

<u>Explanation:</u>

A carbohydrate is a biological molecule that consists of carbon (C), hydrogen (H) and oxygen (O) atoms.

It is one of the 4 main macro-molecules in cells that are made largely from Carbon, Oxygen, Hydrogen and Nitrogen. Therefore, option 3. 'they make up larger compounds like fats and amino acids' is incorrect.


Evgen [1.6K]3 years ago
5 0

3. they make up larger compounds like fats and amino acids, would be the correct answer.

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2 years ago
In a titration of hno3, you add a few drops of phenolphthalein indicator to 50.00 ml of acid in a flask. You quickly add 20.00 m
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Answer:

The HNO3 solution has a concentration of 0.07 M

Explanation:

<u>Step 1:</u> find a balanced equation

HNO3 (aq) + NaOH (aq) → NaNO3 (aq) + H2O (l)

⇒ for 1 mole of HNO3 reacted, there will also react 1 mole of NaOH, and be produced 1 mole of NaNO3 and 1 mole of H2O, since the ratio is 1:1

<u>Step 2:</u> Calculating moles

Since we know that for 1 mole of HNO3 there will react 1 mole of NaOH, we can calculate the number of moleNaOH

⇒ Concentration = mole / volume

⇒ 0.210 = mole / ((20 + 7.23 ml) *10^-3)

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<u>Step 3:</u> Calculating the concentration of HNO3

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0.02723L x 0.21 M x ( 1mol HNO3 / 1 mol NaOH) x (1/ 0.08L) = 0.07M

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