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3 years ago

T or F: The mass of a neutron is so small that it is rounded to 1 amu.

Chemistry

2 answers:

Lana71 [14]3 years ago

7 0

Answer: True

Explanation: The sum of the numbers of protons and neutrons in the nucleus is the mass number. Each proton and each neutron weigh one atomic mass unit (amu).

IrinaVladis [17]3 years ago

4 0

Answer:

True!

Explanation:

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Balance the following chemical equation by providing the correct coefficients.

sukhopar [10]

Answer:

2Na+2H2O→2NaOH+H2

Explanation:

I think this is it

7 0

2 years ago

Plz answer thx<br><br><br> How many moles are in 2.5 x 10^18 grams of water?

alex41 [277]

Answer:

$1.39\times 10^{17}$ moles of water in $2.5\times 10^{18} g$ of water.

Explanation:

Mass of water = $m = 2.5\times 10^{18} g$

Molar mass of water = M = 18 g/mol

Moles = n = $\frac{m}{M}$

$n=\frac{2.5\times 10^{18} g}{18 g/mol}=1.39\times 10^{17} moles$

So, there are $1.39\times 10^{17}$ moles of water in $2.5\times 10^{18} g$ of water.

3 0

3 years ago

In eukaryotes, the process of cell division is called mitosis true or false quick pls :)

mamaluj [8]

True. Mitosis is a part of the call cycle when replicated chromosomes are separated into new nuclei. It is a for if eukaryotic cell division that produces two daughter cells with the same genetic components as the parent cells.

6 0

3 years ago

What is the pH of a 6.4*10-10 m oh- solution?

egoroff_w [7]

PH: 4.80617997
pOH: 9.1938200
[H+]: 1.562
[OH-] 6.4E-10
Acid

8 0

3 years ago

Which could be the pH of an aqueous solution with a H3O+ ion concentration that is less than its OH- ion concentration?

anzhelika [568]

Answer:

Explanation:

You can think of pH as "parts Hydrogen ion," but remember that the pH scale is "backwards." The pH scale ranges from 0 to 14, with zero being the most acidic (highest concentration of H+) and 14 being the most basic.

4 0

2 years ago