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Basile [38]
2 years ago
12

Which expression correctly describes activation energy in a chemical reaction?

Chemistry
1 answer:
Rudiy272 years ago
3 0
An expression that correctly describes the activation energy in a chemical reaction is reactants and products in between the energy barrier. This expression describes the statement above because reactants or products wouldn't produce any reaction unless it will collide with a barrier. It is like the activation of energy where it is in need of a substance or barrier in order to form a chemical reaction.
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An unknown liquid has a mass of 22.1 g
Yuki888 [10]
M = 22.1 g
V = 52.3 mL
D = ?

D = m/V
= 22.1/52.3
= 22.1*10/52.3*10
= 221/523
= 0.4

There. I’m sorry i forgot what exactly was the S.I. unit of density :(
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2 years ago
Calculate the pressure (in kpa) of 1.5 mole of helium gas at 354 k when it occupies a volume of 16.5l.
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Answer:

267.57 kPa

Explanation:

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Answer:

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Explanation:

Natural materials are those that are found in nature and have not been made by humans. By comparison, synthetic materials are man-made and cannot be found in nature. Synthetic products are usually created in laboratories by mixing different chemicals, or prepared compounds and substances made in a laboratory

4 0
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scZoUnD [109]

Explanation:

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8 0
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