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Alona [7]
2 years ago
12

15. What type of energy changes the physical states of matter?

Chemistry
1 answer:
maks197457 [2]2 years ago
7 0

Answer:

your answer will be option d hope ur help

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The compound methyl butanoate smells like apples. Its percent composition is 58.8% C, 9.9% H, and 31.4% O. What’s the empirical
blsea [12.9K]
To find the empirical formula you would first need to find the moles of each element:

58.8g/ 12.0g = 4.9 mol C

9.9g/ 1.0g = 9.9 mol H

31.4g/ 16.0g = 1.96 O

Then you divide by the smallest number of moles of each:

4.9/1.96 = 2.5

9.9/1.96 = 6

1.96/1.96 = 1

Since there is 2.5, you find the least number that makes each moles a whole number which is 2.

So the empirical formula is C5H12O2.
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3 years ago
What type of animal might become preserved in amber
goldfiish [28.3K]
Insect's or Bugs preserved in Amber
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The steam engine in a train heats water until it becomes steam. The steam pushes pistons to move the train. The train is changin
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The answer to your question is option A.
8 0
3 years ago
Determine the mass of sodium carbonate required to produce 23.4g of sodium chloride when it reacts with excess hydrochloric acid
Leni [432]
The balanced chemical reaction for the described reaction above is,
                          Na2CO3 + 2HCl ---> 2NaCl + H2CO3
From the reaction, 1 mole of Na2CO3 is needed to produce 2 moles of NaCl. In terms of mass, 106 grams of Na2CO3 are needed to produce 116.9 grams of NaCl. From this,
                (23.4 g NaCl) x (106 g Na2CO3 / 116.9 NaCl = 21.22 g Na2CO3
Thus, approximately 21.22 g Na2CO3 is needed for the desired reaction. 
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What happens to a glass of pure fruit juice when water is added to it?
Vesna [10]

Answer:

D is the answer i think

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3 years ago
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