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My name is Ann [436]
3 years ago
8

What part of the atom is involved in chemical reactions?

Chemistry
1 answer:
Lesechka [4]3 years ago
7 0
Chemical reactions happen when two or more atoms go together to form molecules or when Atoms brake
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When a solid with a mass of 53.78 g is added to 50.0 ml of water in a graduated cylinder, the volume increases to 56.4 ml. Calcu
Bad White [126]

Answer:

<h3>The answer is 8.40 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}  \\

volume = final volume of water - initial volume of water

volume = 56.4 - 50 = 6.4 mL

We have

density =  \frac{53.78}{6.4}  \\  = 8.403125

We have the final answer as

<h3>8.40 g/mL</h3>

Hope this helps you

3 0
3 years ago
How many significant ZEROES are represented in the following number?<br><br> 0.000004000
Igoryamba

Answer:

3 significant zeroes

Explanation:

To count the number of significant figures, you must pass the zeroes until you reach a non-zero value. Once you reach it, count anything after that as significant values, including the non-zero value itself.

The number has 4 significant figures with 3 significant zeroes.

Hope this helps!!!

5 0
3 years ago
How many moles of hydrogen are produced from the reaction of three moles of zinc with an access of hydrogen chloride?
VladimirAG [237]
9 mol of 2 
2 moles KCIO3

7 0
3 years ago
What is the mass of 1 mole of water
Lady bird [3.3K]

Answer:

18.01528 g/mol

Explanation:

Using the equation to figure this out

4 0
4 years ago
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