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pickupchik [31]
2 years ago
7

What are two benefits of scientists using a diagram to model the water cycle?

Chemistry
1 answer:
tatiyna2 years ago
5 0
I believe that the answer is A i could be wrong though.
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What is the quantity of heat evolved when 15g of CH4 is completely burned in air? Given that CH4+2O2→ CO2+2H2OΔH=-890Kj/mol
bagirrra123 [75]

Answer:

You're going to have to convert the grams to moles, and then multiply that with the ratio of heat produced to the ratio of CH4

8 0
2 years ago
If the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in
anygoal [31]

Answer:

d. supersaturated.

Explanation:

A solution naturally contains a solute and a solvent. The solute is the solid substance that dissolves in the solvent, which is usually a liquid substance. A solution has a maximum amount of solute that can dissolve in its constituent solvent.

However, when the amount of dissolved solute in a solution at a given temperature is greater than the amount that can permanently remain in the solution at that temperature, the solution is said to be SUPERSATURATED. This means that the solution contains more than the maximum amount of solute.

5 0
3 years ago
What would make the risk of these cancers even worse for someone who drinks alcohol?
makvit [3.9K]
Most people<span> know that heavy </span>alcohol drinking can<span> cause health problems. ... </span>Drinking<span>and smoking together raises the </span>risk of these cancers<span> far more .... caused by some </span>cancer<span> treatments, and </span>can even make<span> them </span>worse<span>.</span>
3 0
3 years ago
Suppose that a certain atom possesses only four distinct energy levels. Assuming that all transitions between levels are possibl
olya-2409 [2.1K]

Answer:

Following are the response to the given question:

Explanation:

The number of shells

n = 4

Calculating the spectral line:

= \frac{n(n-1)}{2}\\\\ = \frac{4(4-1)}{2} \\\\= \frac{4\times 3}{2}\\\\ = \frac{12}{2}\\\\ = 6

4 0
2 years ago
Sawing a board in half is an example of a chemical change
koban [17]

Sawing a board in half is a physical change not a chemical change the board doesnt change wood or whatever material it is is still would still be wood
If it were burned it would be a chemical change but its properties stay the same atomically so thats why its not a chemical change.

4 0
3 years ago
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