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zloy xaker [14]
3 years ago
14

The combustion reaction of magnesium results in what compound?

Chemistry
2 answers:
Tasya [4]3 years ago
7 0
C. MgO because mg+o= MgO
IgorC [24]3 years ago
3 0

Answer:

c. MgO.

Explanation:

Magnesium burns in air combining with oxygen to form magnesium oxide.

2Mg + O2 = 2MgO.

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An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 M solution of hydrobromic acid. If 16.5 mL of
Artist 52 [7]

<u>Answer:</u> The molarity of calcium hydroxide in the solution is 0.1 M

<u>Explanation:</u>

To calculate the concentration of base, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HBr

n_2,M_2\text{ and }V_2 are the n-factor, molarity and volume of base which is Ca(OH)_2

We are given:

n_1=1\\M_1=0.120M\\V_1=27.5mL\\n_2=2\\M_2=?M\\V_2=16.5mL

Putting values in above equation, we get:

1\times 0.120\times 27.5=2\times M_2\times 16.5\\\\M_2=0.1M

Hence, the molarity of Ca(OH)_2 in the solution is 0.1 M.

7 0
3 years ago
That my last Q8 A , can someone help me with
DENIUS [597]
The first whistle is louder while the second whistle has a higher pitch
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2 years ago
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A reaction was performed, and the dichloromethane solvent was dried by adding magnesium sulfate drying agent. When the reaction
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7 0
3 years ago
What happens when copper nitrate II is heated​
cupoosta [38]

Answer:

Copper nitrate is a blue coloured crystal.which copper nitrate is heated it loses the water molecule and then when is further heated it decomposes to give redddish brown gas,nitrogen dioxide and oxygen.

Explanation:

4 0
3 years ago
What is the charge of Fe(OH)3?
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The charge for this compound is positive. For Fe, it's charge is positive 3, and for OH, it's charge is negative 1. You would then criss cross the charges of each and come out with Fe(OH)3. I hope this helped!! :)
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