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Anna007 [38]
3 years ago
12

What evidence of a chemical reaction might you see in the following cases?

Chemistry
1 answer:
Ad libitum [116K]3 years ago
5 0
For bleaching a stain, there will be an identifiable odor and it will easily absorb colors and/or stains. Burning a match also has odor involved, but the smoke that is released is from a hot fire that is chemically produced by the formula to make the tip of the match.
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The specific heat capacity of liquid water is 4.18 J/g oC. Calculate the quantity of energy required to heat 1.50 g of water fro
natima [27]

Answer: The quantity of heat required is 358.644 J.

Explanation:

Given: Specific heat capacity = 4.18 J/g^{o}C

Mass = 1.50 g

T_{1} = 26.5^{o}C

T_{2} = 83.7^{o}C

Formula used to calculate heat energy is as follows.

q = m \times C \times (T_{2} - T_{1})

where,

q = heat energy

m = mass

C = specific heat capacity

T_{1} = initial temperature

T_{2} = final temperature

Substitute the values into above formula as follows.

q = m \times C \times (T_{2} - T_{1})\\= 1.50 \times 4.18 J/g^{o}C \times (83.7 - 26.5)^{o}C\\= 358.644 J

Thus, we can conclude that quantity of heat required is 358.644 J.

5 0
3 years ago
A base _____. A.accepts hydrogen ions, B.releases hydrogen ions, C.accepts hydrogen atoms
xxMikexx [17]
<span>C.accepts hydrogen atoms
i think
</span>
5 0
3 years ago
Read 2 more answers
Thousands of years people believe the stars move across our sky explain why we now has a different explanation of why stars move
vladimir1956 [14]
They do not move they stay in the same same place it may look like they move because of the earth rotation
3 0
3 years ago
Element X has three electrons in its outermost orbit.
Leni [432]

Explanation:

element x _ carbon having two shells 2,3

element y _ fluorine atomic no 9 EC 2,7

when carbon react with fluorine it destroyes graphite and form fluorocarbons and thus form covalent bond

hope it helps u

5 0
2 years ago
A measurement of 23.465mg converted to grams equals which of the following?
olya-2409 [2.1K]

Answer:

0.023465 grams

Explanation:

5 0
3 years ago
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