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2 years ago

What ion is formed when an atom of mercury loses two electrons

Chemistry

2 answers:

Keith_Richards [23]2 years ago

7 0

Answer

Hg+2

Explanation:

andrezito [222]2 years ago

6 0

Answer:

magnesium ion Hg2+ cation is formed

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If two clear liquids are mixed and a precipitate formed, what has probably happened?

White raven [17]

It will probably turned into a gumy

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3 years ago

Read 2 more answers

The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining a

stealth61 [152]

Answer: The amount of sample left after 20 years is 288.522 g and after 50 years is 144.26 g

Explanation:

We are given a function that calculates the amount of sample remaining after 't' years, which is:

$A_t(t)=458\times (\frac{1}{2})^{\frac{t}{30}$

For t = 20 years

Putting values in above equation:

$A_t(t)=458\times (\frac{1}{2})^{\frac{20}{30}$

$A_t(t)=288.522g$

Hence, the amount of sample left after 20 years is 288.522 g

For t = 50 years

Putting values in above equation:

$A_t(t)=458\times (\frac{1}{2})^{\frac{50}{30}$

$A_t(t)=144.26g$

Hence, the amount of sample left after 50 years is 144.26 g

6 0

3 years ago

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

Elden [556K]

Answer:

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

Explanation:

All three given options a, b and d have common mechanism to accommodate the polar amino acid.

A= A hydrogen bond forms between two polar side chains.

B= A hydrogen bond from between a polar side chain and protein back bone.

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

All these are use to accommodate the polar amino acid.

While option C is not used. which is:

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

5 0

3 years ago

The Himalayan mountain range found at the junction of India and Asia is an example of a

maksim [4K]

Answer: A : Convergent

Explanation:

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3 years ago

A photon has a wavelength of 750 no. What is the energy in joules

zhuklara [117]

Answer:

750

Explanation:

750

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3 years ago