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noname [10]
3 years ago
8

Valence electrons determine an element's

Biology
2 answers:
denpristay [2]3 years ago
8 0
2nd one is the answers
DanielleElmas [232]3 years ago
4 0

Answer:

Reactivity.

Explanation:

I’m sorry, I don’t really know how to explain this. I just have it memorized. Sorry I couldn’t help more, best of luck!

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Recent soil test form Nick’s farm showed that the soil has a pH value of 7.6, which means the soil is________ acidic, saline, or
Varvara68 [4.7K]
Use this:

pH = 7 => neutral

pH > 7 => basic (alkaline)

pH < 7 => acidic

So, a pH of 7.6 means the soil is alkaline.

Now, to reduce the impact you should lower the pH.

Sulfur forms acid (H2S or H2SO4) which will lower the pH.

So, adding sulfur will result in the (at least partial) neutralization of the pH and so reduce the impact on plant growth.

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5 0
3 years ago
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Nitrogen dioxide is a gas that can be generated by emissions from vehicles and factories. It can also be generated by natural so
klio [65]

Answer:

D. A brown gas produced

Explanation:

When a chemical reaction occur, there are several changes that takes place such as change in color, odor change, formation of a gas, and formation of a precipitate etcetera.

In the given chemical reaction, two colorless gas (NO and O2) react together and form brown gas (NO2). So, the change of gas from colorless to brown gas is the evidence that shows chemical reaction occurred.

Hence, the correct option is "D. A brown gas produced".

6 0
3 years ago
Which of the following best describes the main purpose of the combined processes of glycolysis and cellular respiration? a. brea
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B. they make ATP from glucose molecules and use when necessary
7 0
3 years ago
PLEASE HELP EMERGENCY!! IF YOU ARE NOT 100% SURE ABOUT YOUR ANSWER DO NOT ANSWER THEN!! PLEASE!!
nydimaria [60]
I would say organ systems
7 0
3 years ago
What is the result of a mutation during meiosis?
galina1969 [7]

Answer:

A mutation is a change in the nucleotide sequence of the DNA in a cell. ... Mutations can occur before, during, and after mitosis and meiosis. If a mutation occurs in cells that will make gametes by meiosis or during meiosis itself, it can be passed on to offspring and contribute to the genetic variability of the population.

Explanation:

hope this help....

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3 years ago
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