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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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In which era did the first fish appear?
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C Because Mesozoic Is An Era The First Fish Seen
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3 years ago
Which two features are used to describe matter?<br> om
andreyandreev [35.5K]

Answer:

Physical properties are used to observe and describe matter. Physical properties can be observed or measured without changing the composition of matter. These are properties such as <em>mass, weight, volume, and density.</em>

6 0
2 years ago
Ocean water contains 3.5 nacl by mass. what mass of ocean water in grams contains 45.8 g of nacl
Romashka-Z-Leto [24]

Mass percentage of sodium chloride(NaCl) in ocean waters = 3.5 %

That means 3.5 g sodium chloride(NaCl) is present for every 100 g of ocean water.

The given mass of sodium chloride(NaCl) is 45.8 g

Calculating the mass of ocean waters that would contain 45.8 g sodium chloride(NaCl):

45.8 g NaCl *\frac{100g ocean water}{3.5g NaCl}

                     = 1309 g ocean water

Therefore, 45.8 g sodium chloride is present in 1309 g ocean water.

3 0
3 years ago
Write a scientific argument that addresses the question: Which suspect is most likely to have made the hydrofluoric acid? First,
aniked [119]

Answer:

Pat is most likely to have made the hydrofluoric acid.

Explanation:

How is hydrofluoric acid made?

It is manufactured by heating purified fluorspar (calcium fluoride) with concentrated sulfuric acid to produce the gas, which is then condensed by cooling or dissolving in water. ... The acid hydrolysis of fluorite-containing minerals generates an impure gas stream consisting of sulfur dioxide, water and HF.

that's all I got sorry

7 0
3 years ago
If the initial volume is 55ml and the final volume after some rocks of sandstone are added is 65ml what is the volume of the chi
AfilCa [17]

Answer:

Volume = 10ml

Density = 1/5 g/ml or 0.20g/ml

Explanation:

The rocks are 10ml since the initial volume went up by 10.

Since density = mass/volume, you divide 2 by 10.

D = 2/10

D = 1/5 g/ml or 0.20g/ml

(Unit is g/ml aka grams/millileter)

7 0
2 years ago
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