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tatuchka [14]
4 years ago
8

What do all four of these molecules have in common?

Chemistry
2 answers:
sergiy2304 [10]4 years ago
8 0
A. They are Essential to Life
EleoNora [17]4 years ago
5 0
I did a quick search and found the diagram. Let's go through these and solve by elimination. 

B. Proteins can act as receptors which I guess could be considered a signal, but the rest of the molecules do not. B is incorrect. 

C. Lipids are not water soluble. An example of lipids are fats, and oils. Have you ever tried combining water and oil? Think about salad dressing, it does not mix. C is incorrect.

D. Carbohydrates and lipids are sources of energy, but nucleic acids and proteins are not. D is incorrect. 

The answer is A. because we know that our bodies are made up of nucleic acids, protein, fats, and we need carbohydrates in order to live normal, healthy lives. 

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Rainbow [258]

Answer:

0.02 moles.

Explanation:

volume of H₂ gas at R.T.P = 480 cm³

Where

R.T.P = room temperature and pressure

molar volume of gas at = 24000 cm³

no. of moles of hydrogen = ?

Solution:

formula Used

       no. of moles = volume of gas / molar volume

put values in above equation

         no. of moles = 480 cm³ / 24000 cm³/mol

         no. of moles = 0.02 mol

So,

no. of moles of hydrogen in 480 cm³ is 0.02 moles.

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3 years ago
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