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Novay_Z [31]
3 years ago
12

SA

Chemistry
1 answer:
inn [45]3 years ago
8 0

Answer:

маликулярная масса ровна  23

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If an alloy is formed that is 50 mol% silver and 50 mol% gold, what is the karat number of the alloy?
Allisa [31]
Answer : 12 karat

Explanation : When pure gold is considered to be 24 karat then if its 50 mol% silver and 50 mol% silver then using karat scale calculation;

Karat/24 X 100 = 50 mol% (for gold) in alloy

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Hence the alloy will be of 12 karat.
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3 years ago
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Epsom salts, a strong laxative used in veterinary medicine, is a hydrate, which means that a certain number of water molecules a
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The values of x represents that number of moles of water molecules that is present per mole of the salt magnesium sulfate. To determine the value for this, we need to know how much is the water that is lost after heating the sample assuming that all of the water molecules are evaporated leaving only the unhydrated form of the salt. We calculate as follows:

Mass of hydrated salt = 3.484 g
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Mass lost = 3.484 g - 1.701 g = 1.783 g

The mass lost is equal to the mass of water lost.

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moles water / moles MgSO4 = 0.0989 mol H2O / 0.0141 mol MgSO4 = 7

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8 0
3 years ago
As the mass of an object increases, what happens to the gravitational force created by that object?
alexandr1967 [171]

Answer:

the gravitational force is proportional to the mass of both interacting objects, bigger objects will attract each other with a greater gravitational force. So the mass of either object increases, the force of gravitational attraction between them also increases.

4 0
3 years ago
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Could a mixture be made up of only one element and no compounds​
Firdavs [7]

Yes. A mixture can be made up of just elements without the use of a compound, you can also just use compounds in a mixture without any elements

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The number of units of the molecular formula P2O10  is ……………..​
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Explanation:

The number of units of the molecular formula P2O10  is

<h2>........…Phosphorus pentoxide…………..</h2>
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