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Dafna1 [17]
3 years ago
5

Please help me this is due soon i really need help :'c ************24 POINTS!*********

Chemistry
1 answer:
babymother [125]3 years ago
5 0

Answer:

carbohydrates, lipids, proteins, and nucleic acids.

Explanation:

Carbohydrates serve several key functions in your body. They provide you with energy for daily tasks and are the primary fuel source for your brain's high energy demands.

The functions of lipids include storing energy, signaling, and acting as structural components of cell membranes. Lipids have applications in the cosmetic and food industries as well as in nanotechnology.

Protein has many roles in your body. It helps repair and build your body's tissues, allows metabolic reactions to take place and coordinates bodily functions. In addition to providing your body with a structural framework, proteins also maintain proper pH and fluid balance.

The functions of nucleic acids have to do with the storage and expression of genetic information. Deoxyribonucleic acid (DNA) encodes the information the cell needs to make proteins. A related type of nucleic acid, called ribonucleic acid (RNA), comes in different molecular forms that participate in protein synthesis.

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Scientists make improved explanations by building on old ideas and working with new data.

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3 years ago
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A solution has a volume of 250 ml and contains 0.70 mol Nacl what is the molarity
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First convert mL into liters:

1 L = 1000 mL

250 mL / 1000 = 0.25 L

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3 years ago
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A particular flask has a mass of 17.4916 g when empty. When filled with ordinary water at 20.0°c (density = 0.9982 g/ml), the ma
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The mass of the empty flask is 17.4916 g. Now after feeling the ordinary water the mass of the flask is 43.9616 g. Thus the change of weight due to addition of ordinary water is (43.9616 - 17.4916) = 26.47 g.

Now as the density of the ordinary water at 20°C is 0.9982 g/ml, so 26.47 g is equivalent to \frac{26.47}{0.9982}=26.5177 mL of water. Thus the capacity of the flask is 26.5177 mL.

Now the density of heavy water is 1.1053 g/mL at 20°C. Thus 26.5177 mL of heavy water is equivalent to (1.1053×26.5177) = 29.310 g.

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The reaction 2KClO3 (s) ->2KCl (s) + 3O2 (g) is a
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(C) Decomposition reaction

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<u>in this example </u>

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How many valence electrons are in the methyl ammonium ion CH3NH3+
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15

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