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3 years ago

Which of the following methods separates a homogeneous solution by spinning the solution very fast?

Chemistry

2 answers:

Zolol [24]3 years ago

7 0

Answer:

The answer is (D) Magnetism

The methods separates a homogeneous solution by spinning the solution very fast is magnetism.

san4es73 [151]3 years ago

5 0

The correct answer would be C) Centrifuge

A centrifuge can be used to speed up the process by spinning super-fast until the heavier components (solids or liquids) sink to the bottom and the lighter components (liquids or gases) float to the top.

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What is the total number of moles contained in 115g of C2H5OH?

julsineya [31]

2.4962859606272754 moles of C2H5OH

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3 years ago

Determine the value of the equilibrium constant, Kgoal, for the reactionN2(g)+H2O(g)⇌NO(g)+12N2H4(g), Kgoal=?by making use of th

Black_prince [1.1K]

Answer:

$K_{goal}=1.793*10^{-33}$

Explanation:

N2(g)+O2(g)⇌2NO(g), $K_1 = 4.10*10^{-31}$

N2(g)+2H2(g)⇌N2H4(g), $K_2 = 7.40*10^{-26}$

2H2O(g)⇌2H2(g)+O2(g), $K_3 = 1.06*10^{-10}$

If we add above reaction we will get:

2N2(g)+2H2O(g)⇌2NO(g)+N2H4(g) Eq (1)

Equilibrium constant for Eq (1) is $K_1*K_3*K_3$

Divide Eq (1) by 2, it will become:

N2(g)+H2O(g)⇌NO(g)+1/2N2H4(g) Eq (2)

Equilibrium constant for Eq (2) is $(K_1*K_3*K_3)^{1/2}$

$Equilibrium constant =K_{goal}= (K_1*K_2*K_3)^{1/2}\\K_{goal}= (4.10*10^{-31} *7.40*10^{-26}*1.06*10^{-10})^{1/2}\\K_{goal}=1.793*10^{-33}$

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3 years ago

How many significant figures are in the number 020.310

True [87]

Answer:

Explanation:

Sorry, don't have one

Hope this helps and I get brainliest <3

6 0

2 years ago

Describe two physical and two chemical changes involved in cooking. (4 points)

Ivenika [448]

Physical changes are when things get changed without altering chemical consistencies, which is melting solid butter into liquid one, or boiling water. Chemical changes are things such as caramelizing sugar when making sweets, or when carbon dioxide is created and released when baking bread.

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3 years ago

Reactants are What you start with What you end with

Naya [18.7K]

Answer:

Reactants are what you start with

Explanation:

Reactants are what you start with, the product is what you end with! :)

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3 years ago