3 years ago

Why do scientists need scientific models?

Chemistry

2 answers:

zhuklara [117]3 years ago

7 0

So they can prove there hypothesis is correct or have an understanding.

Kazeer [188]3 years ago

6 0

Because sometimes the real thing is either too big or too small to observe or test, so they need an easily observable model.

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During reflux and distillation, how is it possible to lose the product?

Alla [95]

What is reflux? isn't it like when u aren't able to digest something?

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3 years ago

In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol). Calculate the number of moles of chl

Annette [7]

Answer:

3.67 mol Cl

Explanation:

We need to convert g of Cl 2 to moles of Cl. First we divide 130 gCl2 by the molar mass (70.90 gCl2/mol) to find out how many moles of Cl2 do we have.

130 gCl2 x $\frac{1 mol Cl2 }{70.90 gCl2}$ = 1.83 mol Cl2

Then we need to convert 1.83 mol de Cl2 to moles of Cl. We have 2 moles of Cl in every Cl2 molecule so we just need to multiply by 2.

1.83 molCl2 x $\frac{2 molCl}{1 molCl2}$ = 3.67 molCl

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3 years ago

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The reaction below is at equilibrium. What would happen if more sodium<br> were added?

densk [106]

Answer:

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1 year ago

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Um Test

vitfil [10]

Suspensions

Explanation:

Suspensions are heterogeneous mixtures that contains large particles that can settle out or be filtered.

Suspensions are mixtures of small insoluble particles of a solid in a liquid or gas.
Examples are:

powdered chalk in water
muddy water
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The particles in suspension can settle on standing

Learn more:

Suspension brainly.com/question/1557970

heterogeneous mixture brainly.com/question/1446244

#learnwithBrainly

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