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Salsk061 [2.6K]
3 years ago
8

Chemical changes can be reversed by physical changes. Please select the best answer from the choices provided T F

Chemistry
2 answers:
Wewaii [24]3 years ago
6 0
False. A physical change can only reverse a physical change 
Katyanochek1 [597]3 years ago
4 0

Answer: Given statement is false.

Explanation:

Chemical changes are the changes which occur when two or more aoms chemically combine together and they result in the formation of new product(s).

For example, Na + Cl \rightarrow NaCl is a chemical reaction as it forms compound sodium chloride (NaCl).

Also, chemical reactions cannot be reversed by physical changes as chemical changes form chemical compounds which can only be reversed by chemical changes only.

Thus, we can conclude that the statement chemical changes can be reversed by physical changes is false.

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How do your eyes, ears, nose, tongue, and skin send information to your brain?
Aneli [31]

Answer:

they send signals through the nerves. through sensory receptors to be specific

6 0
2 years ago
Which of these statements about heating up land and water is true?
Oduvanchick [21]

Answer:

the land is heated through radiant energy,

Explanation:

7 0
2 years ago
2. An exothermic reaction releases 86.5 kJ. How many kilocalories of<br> energy are released?
Alenkasestr [34]

Answer:

20.67 kcal of energy is released.

Explanation:

It is given that, an exothermic reaction releases 86.5 kJ. We need to convet kJ to calories.  

Since,

1 kcal = 4.184  kJ

So,

1 kJ = 0.239  kcal

For 86.5 kJ,

86.5 kJ = (0.239 × 86.5) kcal

86.5 kJ = 20.67 kcal

So, 20.67 kcal of energy is released.

7 0
3 years ago
How many methods of heat transfer are there<br>​
Eva8 [605]
There are three methods of heat transfer
3 0
3 years ago
Read 2 more answers
A horse runs 1 km in 15 s. What is the average speed
Reptile [31]

The average speed of the horse for the entire motion is 66.67 m/s.

The given parameters;

  • <em>distance traveled by the horse, d = 1 km = 1,000 m</em>
  • <em>time of motion of the horse, t = 15 s</em>

The average speed of the horse is calculated by dividing the total distance traveled by the horse by the time of motion.

The average speed of the horse is calculated as follows;

average\ speed = \frac{distance}{time} \\\\average\ speed =  \frac{1000 \ m}{15 \ s} = 66.67 \ m/s

Thus, the average speed of the horse for the entire motion is 66.67 m/s.

Learn more here: brainly.com/question/17289046

6 0
3 years ago
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