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ra1l [238]
3 years ago
8

(BRAINLIEST) Which of these statements best describes an Alkali?

Chemistry
1 answer:
Sedbober [7]3 years ago
4 0

Answer:

The number of principle energy level increases and the number of valance electrons remain the same.

Make Me Brainliest.

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I dunno which one it is could someone help please?​
alex41 [277]

Answer: B. photosynthesis

Explanation: Glucose and oxygen react together in plant cells to produce energy.

5 0
3 years ago
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Why is large-scale nuclear fission a rare phenomenon on Earth? A. There isn't enough energy to start a chain reaction in nature.
siniylev [52]

The answer is; C

The radioisotopes in the interior of the earth are not in pure form and have many embedded impurities and are interspersed. Therefore when a neutron is released by a decaying atom, its chances of hitting another radioisotope atom (to continue the chain reaction) are lower than in a manmade nuclear reactor. This way, the radioactive chain reaction in the earth’s interior is not well sustained.


6 0
3 years ago
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HCl(?) + H2O(?) → H3O+(?) + Cl-(?)
larisa86 [58]

Answer:

Transcribed image text: Answer.

the following question for the mixing of gaseous hydrogen chloride with water to make hydrochloric acid. HCl) + H2O(2) → H30*) + Cl (2) What is the phase label on HCI? aq

6 0
3 years ago
Is fireworks exploding a chemical change?
zalisa [80]

Answer:

Yes

Explanation:

The fireworks explode

7 0
3 years ago
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Suppose that 7.25 x 10^22 atoms of a hypothetical element have a mass of 3.88 g. What would be the molar mass (g/mol) of this el
S_A_V [24]

Answer:

32.23 to 4 significant figures.

Explanation:

The molar mass of the element is the mass of 6.022 * 10^23 atoms (Avogadro's number).

So by proportion it is 6.022 * 10^23 * 3.88 / 7.25 * 10^22

= 32.23 to 4 significant figures.

4 0
3 years ago
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