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Flura [38]
3 years ago
6

Describe the stages of volcanic activity

Chemistry
1 answer:
OverLord2011 [107]3 years ago
5 0
Active, Dormant, and Extinct.
Hope this helps.
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Worth *20 points* Helpppp
Lera25 [3.4K]
Yes. a linear graph does. Pass the vertical line test

Each value in the domain X,results in a unique range ,y, value
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3 years ago
How long does it take for only one eighth of a sample of radon-222 to remain
Alex17521 [72]
1/8=(1/2)^3 and the half life of radon is 3.8days

Half life is the time it takes for half of any amount of a radioactive substance to decay into something else.

Therefore for a sample of radon to decay to 1/8 of its original amount, it would take 3 x 3.8days=11.4 days
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True or false?<br><br> To decrease the concentration of a<br> solution, add more liquid.
Setler79 [48]
It’s true !!!!!!!!!!!!!!!! N
8 0
2 years ago
True or false? different reactions require different catalysts.
lapo4ka [179]

True, different reactions require different catalysts. Hence, option 1 is correct.

<h3>What are catalysts?</h3>

A catalyst is a substance that speeds up a chemical reaction or lowers the temperature or pressure needed to start one, without itself being consumed during the reaction.

Though a catalyst is supposed to remain unaltered at the end of the reaction, it does take part in the reaction by providing active centres for the reaction to take place.

By helping to form a suitable activated complex in the course of the reaction, the catalyst increases the rate of formation of the product, as well as its yield.

Therefore, a catalyst has to be reactant-specific to form the favourable activated complex or intermediate.

Hence, option 1 is correct.

Learn more about the catalysts here:

brainly.com/question/12260131

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8 0
1 year ago
A chemical reaction produces 653 550 kj of energy as heat in 142.3min. calculate the rate of energy transferred in kj per minute
miskamm [114]

We have the value of  

Total energy produced in the chemical reaction=653 550 KJ  

Time needed=142.3min  

To calculate the rate of energy transfer, that is the amount of energy produced per minute.  

Rate of energy transfer=\frac{Total energy produced}{Time needed}

=\frac{653 550}{142.3}

=4592.76 KJ min⁻¹

So, the rate of energy transfer is 4592.76 KJ min⁻¹.

6 0
3 years ago
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