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Y_Kistochka [10]
3 years ago
7

How many elements are in 2c3h502

Chemistry
1 answer:
dem82 [27]3 years ago
7 0

Answer:

3

Explanation:

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Did entropy increase or decrease?
seropon [69]

Answer:

1) increase

2) increase

Explanation:

Entropy is the degree of disorderliness or randomness of a system. It is the measure of the unavailable energy in a system.

Entropy increases with increase in the number of particles. If the number of particles in a system increases from left to right, the entropy of the system increases accordingly.

In reaction 1, the number of particles from left to right increased from two to three hence the entropy was increased.

In reaction 2, the number of particles from left to right increased from three to five hence the entropy was increased.

8 0
3 years ago
Why do we need to rinse the mouth before collecting the saliva​
Burka [1]
The rinsing of mouth is to remove food particles and minimize mucous
6 0
3 years ago
Convert 145 meters to kilometers.
Sphinxa [80]

Divide by 1000

145÷1000=0.145

Hope this will be helpful.

4 0
1 year ago
Which material does not melt at any temperature?
lord [1]

Answer: Option (c) is the correct answer.

Explanation:

Wood is a mixture of different substances. Primarily it consists of cellulose, lignin, water etc.

When we heat wood then all these substance oxidize into the atmosphere even before they could melt.

Whereas iron, sodium chloride and ethanol all are the substances which can melt at any temperature.

Thus, we can conclude that out of the given options, wood, a mixture of different substances is a material that does not melt at any temperature.

6 0
4 years ago
What does diatomic mean?
Tanya [424]
Answer:  [A]:  "<span><span>two atoms, both the same element, bonded together</span>".
</span><span>_____________________________________________________________</span>
4 0
4 years ago
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