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miv72 [106K]
3 years ago
7

What is the mass number for aluminum?

Chemistry
1 answer:
chubhunter [2.5K]3 years ago
7 0
<h3>Hello There!</h3>

The mass number is 26.9815

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Which of the following is the formula for Hypochlorous acid?
Leno4ka [110]

Answer:

HClO

Explanation:

7 0
3 years ago
HELP PLS.. I’LL MARK U BRAINLIEST!
lakkis [162]

Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites.

<h3>What are mines?</h3>

A mine is an area from which natural resources are extracted such as coal, metals, etc. A mine is known to be the source of many heavy metals as well as acid.

As such the statement that does not represent the impact of mining services is that; "Old and inefficient mining smokestacks contaminate the soil around abandoned mine sites".

Learn more about mine sites:brainly.com/question/25875677

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3 0
2 years ago
Give the number of significant figures in this number: 7.8 x 10¹²
denis-greek [22]
The number is written in scientific notation.


The significant figures are the numbers known precisely plus 1 digit that is uncertain.


When the numbers are expressed in scientific notation all the digits before  10^n are significant.


So, 7 and 8 are significant figures and the answer is that the number of significant figures is 2.


Answer: 2
8 0
4 years ago
Which of the following could have the formula XY₂?
Savatey [412]

Answer: B

Explanation:

There is an atom of one type of element and then two atoms of another type of element.

5 0
2 years ago
If you burn 59.1 g of hydrogen and produce 528 g of water , how much oxygen is reacted
shtirl [24]
Hydrogen + oxygen --> water
59,1g + x = 528g
528g - 59,1 = x
x = 468,9g
8 0
3 years ago
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