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neonofarm [45]
3 years ago
14

What percentage of water on earth is fresh water

Chemistry
2 answers:
marshall27 [118]3 years ago
7 0

Answer:

only 2.5% is fresh water on earth

zloy xaker [14]3 years ago
7 0

Answer:

The answer is 3%

Explanation:

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Question 1 (2 points)
allochka39001 [22]

The solution to the polynomial expression since the power of the variable is in the second degree is 6.29 × 10² cm

<h3>What is the power of a variable?</h3>

The power of a variable refers to the exponent of the variable and the highest power of a variable is the degree to which the variable is being raised. From the information given, the highest power of the variable is a polynomial.

Given that:

\mathbf{= 2.150  \times 10^2 \ cm + 7.34 \times 10^2 \ cm - 3.2 \times 10^2 \ cm }

So, since the exponents are in the same power we are going to add them all together multiplied by their exponent.

i.e.

\mathbf{= (2.150 + 7.34 - 3.2)   \times 10^2\ cm }

\mathbf{= 6.29 \times 10^2\ cm }

Learn more about the power of a variable here:

brainly.com/question/2495761

6 0
3 years ago
The group of elements alkali metals react with are called the?
yulyashka [42]
Hey there,
The answer is Group 1 elements.

Hope this helps :))

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4 0
3 years ago
How many moles are present in 25.0 grams of potassium permanganate
lorasvet [3.4K]

Answer:

0.158

Explanation:

HOPE THIS HELPS!!

8 0
3 years ago
I WILL GIVE BRAINLIEST!!!!
lions [1.4K]

The correct answer is option c, that is, nucleus.  

A usual atom comprises three subatomic particles, that is, the neutrons, protons, and electrons. According to Bohr's model, the majority of the mass of an atom is in the nucleus, that is, a small, dense region at the center of each atom, comprising nucleons.  

The nucleons incorporate neutrons and protons. All the positive charge of an atom is found in the nucleus and arises from the protons, the neutrons are neutrally-charged, and the electrons are the negatively charged particles found outside of the nucleus.  


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4 years ago
What group of substances does this substance belong to?
HACTEHA [7]
In comparison see it is very easy in goolge
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