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Mariulka [41]
3 years ago
12

a scientific ____ is a principle that describes the behavior of a natural phenomenon. A)law B)model C)theory D)analysis

Chemistry
2 answers:
Alja [10]3 years ago
7 0
<span>A scientific Law is a principle that describes the behavior of a natural phenomenon. 
 so it is A.</span>
8_murik_8 [283]3 years ago
5 0

The answer is B. Scientific models are used by scientists in situations where an experiment cannot be viably conducted. Commonly accepted data, ideas, and knowledge within the scientific community are used to create scientific models that endeavor to explain particular phenomenons.

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What are moles in chemistry?
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A mole is a unit to describe an amount of something/specific substance. Typically standard for measuring a large quantity of small entities like atoms, molecules, or other particles.
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When a tip of a plant is cut it doesn't grow well​
aleksandr82 [10.1K]

Explanation:

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A chemist adds 485 mL of a 0.0025 mol/L calcium sulfate solution to a reaction flask. Calculate the mass in grams of calcium sul
viva [34]

Answer : The mass in grams of calcium sulfate is 0.16 grams.

Explanation :

Molarity : It is defined as the number of moles of solute present in one litre of solution.

Formula used :

Molarity=\frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution}}

Solute is, CaSO_4

Given:

Molarity of CaSO_4 = 0.0025 mol/L

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Volume of solution = 485 mL

Now put all the given values in the above formula, we get:

0.0025=\frac{\text{Mass of }CaSO_4\times 1000}{136\times 485}

\text{Mass of }CaSO_4=0.16g

Thus, the mass in grams of calcium sulfate is 0.16 grams.

6 0
3 years ago
Friction is a force that opposes motion. When friction is present, heat is generated.
anyanavicka [17]

Answer:

I think it is: Some of the energy is converted into thermal energy.

Explanation:

Please let me know if I am wrong so I can fix it :)

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Convert 150.0 g to mg.
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3 years ago
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