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shepuryov [24]
3 years ago
9

Metamorphic rocks that melt in a hot fluid can re-crystallize into a different form of rock. true or false

Chemistry
1 answer:
Scilla [17]3 years ago
5 0
Yes metamorphic rocks melt in hot fluid
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A student was asked to find the molar mass of calcium nitrate, Ca(NO3)2. she added the molar masses of calcium, nitrogen, and ox
dlinn [17]

Answer: 116g/mole

Explanation:

She didn't get the answer because she didn't add the them well , due to the bracket present.

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2 years ago
Which of the following statements correctly describes what happens in all chemical reactions?
azamat

Answer:

Bonds between atoms are broken/ or new bonds are formed

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Due to chemical changes.

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Organic foods do not contain chemicals.<br><br> True<br> False
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True because they are organically made without any things that include chemicals
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3 years ago
Avery has a glass of pure water. She pours a tablespoon of sugar into the water to make it taste sweet.
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Fred mixes a solution using two types of solutions: 0.60 liters containing 10% alcohol and 0.40 liters containing 35% alcohol. W
insens350 [35]

The alcohol concentration of the mixed solution is 20%

Simplification :

Based on the given condition, formulate :

35% ×0.40 + 0.6 ×10% ÷{ 0.4+0.6}

Calculate the product :\frac{0.14+0.06}{0.4 + 0.6}

Calculate the sum or difference : \frac{0.2}{1}

Any fraction with denominator 1 is equal to numerator : 0.2

Multiply a number to both numerator, denominator : 0.2 ×\frac{100}{100}

Calculate the product or quotient : \frac{20}{100}

A fraction with denominator equals to 100 to a percentage 20%.

How do you find the concentration of a mixed solution?

In general when your are mixing two different concentrations together first calculate number of moles for each solution (n=CV ,V-in liter) then add them together it will be total moles,then concentration of mixture will be = total moles / total volume(liter).

Learn more about concentration of alcohol :

brainly.com/question/13220698

#SPJ4

5 0
1 year ago
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