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allochka39001 [22]
2 years ago
11

Help me. ASAP!!!!! 23 POINTS!!!!!!!

Chemistry
1 answer:
Alona [7]2 years ago
6 0
a) Group 2 elements have 2 electrons on their outer shell, so they form a 2+ charge.

b) they lose 2 electrons as they are transferred to the non metal.

c)They obtain this charge as when they are made into an ionic compound the 2 electrons on the outer shell are transferred to the non metal, meaning there are 2 more protons that electrons, giving it a positive charge.

hope this helps! :)
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Which change in the sun’s gravity would occur if the sun’s mass were reduced by one-half?(1 point)
Kisachek [45]

Answer:

Gravity or the gravitational force is defined as the force of attraction occurring between all states of matter. The sun’s gravity, mass, and radius plays a crucial role in the properties of the Sun.

Explanation:

The gravity of an object can be determined using the formula:

\text{g}&=\frac{\text{GM}}{\text{R}^{2} }}

Now, according to the question, the mass of the sun is halved, which will be written as:

\text{g}&=\frac{\text{G}\frac{\text{M}}{2}}{\text{R}^{2} }}

Thus, according to the equation, the mass of an object is directly proportional to the gravitational field. since, the mass of the Sun is reduced to half, the gravity of the Sun will be halved.

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3- Fully folded proteins typically have polar side chains on their surfaces, where electrostatic attractions and hydrogen bonds
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Answer:

Option C= A hydrogen bond formed between a polar side chain and a hydrophobic side chain.

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D =  hydrogen bond form between polar side chains and a buried water molecules.

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While option C is not used. which is:

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2.13

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