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3 years ago

Which of these would represent the chemical formula for a momer of carbohydrates?

Chemistry

2 answers:

Aleksandr [31]3 years ago

5 0

Answer:

A) $C_{6}H_{12}O_{6}$

Explanation:

A monomer is essentially a small molecule which combines with another molecule of the same kind to form a macromolecule. When two or more number of monomer units react together they form a polymer through a process known as polymerization.

Carbohydrates are polymers made of monomers units which are simple sugars. The chemical formula $C_{6}H_{12}O_{6}$ corresponds to that of glucose. Starch which is a carbohydrate is formed by the polymerization of glucose.

erastovalidia [21]3 years ago

3 0

The correct answer here is A, because glucose is a type of carbohydrate’s monomer

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12. When a chlorine atom forms an ion its radius increases, but when a sodium atom forms an ion its radius decreases. Explain th

Lana71 [14]

Explanation:

When a chlorine atom forms an ion, it gains electrons, making it negative. A neutral chlorine will become a chlorine with a -1 charge. When it gains an electron, the radius increases.

When a sodium atom forms an ion, it loses electrons, making it positive. A neutral sodium will become a sodium with a +1 charge. When it loses an electron, the radius decreases.

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3 years ago

2. A substance that is solid, has a shiny orange color, conducts electricity well, and melts

geniusboy [140]

Answer: Aluminium

Explanation:

The metals are solid substances, they have shiny luster, they conduct electricity and have high melting point. The aluminium is a kind of metal that have a solid surface, it has a shiny luster, the surface of metal appears to be polished. It conducts electricity and can be used in electrical cords, connections, and devices. It has a high melting point.

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2 years ago

Which of the following is a characteristic of a good index fossil?

sladkih [1.3K]

The answer is c, because we use it as an "index" to tell when the animal lived, so if it's unique to that time level in the ground we know it lived that long ago.

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3 years ago

Which of the following is a characteristic shared by all living things?

Annette [7]

Answer; it’s either d or a. If it was be I would pick A. Not sure

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2 years ago

Carbon-14 is a radioactive isotope. It is found in the air in carbon dioxide molecules. The amount of carbon-14 in the air has s

STatiana [176]

Answer: A. About 5,700 years

Explanation:

Expression for rate law for first order kinetics is given by

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate or decay constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

Thus the time taken to carbon-14 to reduce to 50% is called as half life.

From the graph, it comes out to be 5750 years which is close to 5700 years

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3 years ago