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2 years ago

Why it is important to replicate scientific experiments?

Chemistry

2 answers:

KatRina [158]2 years ago

7 0

To detect mistakes (A)

fenix001 [56]2 years ago

4 0

Its A CUHH!!!!!!

WHY???- BC I SAID SO CUHH

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The process by which a semipermeable membrane allows water molecules, small molecules, and ions to pass through while retaining

Jet001 [13]

The process is know as diffusion in which substances move from higher concentration to lower concentration

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3 years ago

Enzymes are essential to cells because they are responsible to either making or breaking other molecules the cells need. True or

8_murik_8 [283]

Answer:

True is the answer to this question

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2 years ago

Read 2 more answers

Classify the items based on whether they are or are not matter.

Phantasy [73]

Answer:

Matter:

toothpaste

gasoline

bacteria

cell

Not matter:

happiness

sound

Explanation:

Matter is something that has mass and volume. Happiness is just a feeling, it doesn't exist in 3d world. Sound is a wave or just the movement of matter (particles of matter). Others have masses and volumes.

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3 years ago

Grease is applied to the moving part of machine. <br>

RideAnS [48]

Answer:

Explanation:

The moving part won't move on its own there's a force but the force isn't enough for something like a bike chain it need grease to move smoothly or else it will just be super stuck or slow.

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2 years ago

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A student prepares a 0.47mM aqueous solution of acetic acid CH3CO2H. Calculate the fraction of acetic acid that is in the dissoc

Aliun [14]

The fraction of acetic acid that is dissociated is 0.18

Why?

The chemical equation for the dissociation of acetic acid (HAc) is the following:

HAc(aq) + H₂O(l) ⇄ H₃O⁺(aq) + Ac⁻(aq)

To find the fraction of acetic acid that is in the dissociated form (f), we apply the following equation (Ka for acetic acid is 1.76*10⁻⁵). This equation comes from solving the equation of the equilibrium constant for the dissociated fraction of HAc:

$f=\frac{-Ka+\sqrt{Ka^{2} +4KaC} }{2C} = 0.18$

Have a nice day!

#LearnwithBrainly

6 0

3 years ago