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Alborosie
2 years ago
12

Compare the diagrams of the chemical structures of the two major categories of energy providing molecules in our food: carbohydr

ates and lipids. What is it about the structure of lipids that causes them to contain so many more calories than an equivalent volume of carbohydrates
Chemistry
1 answer:
alisha [4.7K]2 years ago
4 0

Answer:

cfre

Explanation:

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Which of the following instruments is a combination of a percussion and a stringed instrument?
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Answer:B

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What is the name of a compound that has the formula C6H6
cricket20 [7]
Benzene is the compound name and it is a covalent compound
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Given the diagrams X, Y, and Z below:
liq [111]

Answer: The answer is Z only

I’m assuming the answer choices are

1) x only

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5 0
3 years ago
(a)-Use Lewis symbol store present there action that occurs between Ca and F atoms. (b)-What is the chemical formula of the most
Charra [1.4K]

Answer:

(a) The Lewis structure is shown in the image below.

(b) CaF_2

(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.

(d) Calcium atom loses electrons.

Explanation:

Calcium is the element of second group and forth period. The electronic configuration of Calcium is - 2, 8, 8, 2 or 1s^22s^22p^63s^23p^64s^2

There are 2 valence electrons of Calcium.

Fluorine is the element of group 17 and second period. The electronic configuration of the element fluorine is - 2, 7 or  1s^22s^22p^5

There is 1 valence electron of fluorine.

The Lewis structure is drawn in such a way that the octet of each atom is complete.  

Thus, calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond. This is done in order that the octet of the atoms are complete and they become stable.

Thus, the formula of calcium chloride is CaF_2.

<u>(a) The Lewis structure is shown in the image below.</u>

<u>(b) CaF_2</u>

<u>(c) Calcium loses 2 electrons to 2 atoms of fluorine and these 2 atoms of fluorine accepts each electron to form ionic bond.</u>

<u>(d) Calcium atom loses electrons.</u>

5 0
2 years ago
How many grams of iron contain 4.06X10^24 atoms of iron?
Oxana [17]
4.06x20^24/6.02x10^23 = 6.744 moles x 55.845 g/mole = 376.61868grams
4 0
2 years ago
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