2 years ago

Which of the following BEST describes one of the main functions of proteins?

Chemistry

1 answer:

Hoochie [10]2 years ago

7 0

Can we see the answer choices that you can choose from ?

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Pb(NO3)2 + K2CO3 --> PbCO3 + KNO3 A. 5 B. 2 C. 4

emmasim [6.3K]

Answer:

Pb(NO3)2 + K2CO3 ----> PbCO3 + 2KNO3

The answer is B. 2

Hope this helps!

4 0

2 years ago

Plllllzzz help :(

erastova [34]

Comment down below for the answer

5 0

2 years ago

The nucleus of an atom contains at least one proton. True or false

Svetllana [295]

The answer is falling

5 0

2 years ago

Which of these pathogens can be killed by antibiotics?

Alisiya [41]

Answer:

it's c.

Explanation:

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5 0

2 years ago

What is the identity of the element, and how many neutrons does it have? An elements most stable ion forms an ionic compound wit

Pani-rosa [81]

Answer:

B. CA, 14

Explanation:

Atoms of elements contain small particles known as electrons, neutrons, and protons. The nucleus of an atom is made up of neutrons and protons which are at the center of the atom. Electrons on the other hand surrounds the nucleus. Electron has negative charge while proton has a positive charge. The number of neutrons is equivalent to the number of protons . In addition, the number of protons is equal to mass number minus the number of electrons.

For the compound $XCl_{2}$ , it can be broken down into $X^{2+}$ and $2Cl^{-}$ . Its ion has a mass of 34 and 18 electrons which means it has already lost 2 electrons.

Therefore:

For the given element, the number of electrons is 18+2 = 20 electrons.

The number of protons = 34 - 20 = 14.

And the number of neutrons is 14.

Only option B has the correct answer.

6 0

2 years ago