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3 years ago

WILL MARK BRAINLIEST!!! please answer correctly

Chemistry

1 answer:

Kipish [7]3 years ago

8 0

Answer:

Your answer is 344,758.168519

Explanation:

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Describe what is happening when we see the color black. why do we see white?

sineoko [7]

Probably when u close your eyes you’d see black or whenever you about to past out

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3 years ago

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Given the two reactions PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq), K3 = 1.89×10−10, and AgCl(aq)⇌Ag+(aq)+Cl−(aq), K4 = 1.25×10−4, what is the

Sergio [31]

Answer:

$1.2\times 10^{-2}$

Explanation:

The given reactions are:

PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq) $K_3 = 1.89\times 10^{-10}$

AgCl(aq)⇌Ag+(aq)+Cl−(aq) $K_4 = 1.25\times 10^{-4}$

Required reaction is:

PbCl2(aq)+2Ag+(aq)⇌2AgCl(aq)+Pb2+(aq)

$K_f = \frac{K_3}{K_4^2}\\=\frac{1.89\times 10^{-10}}{1.25\times 10^{-4}}^2\\=1.2\times 10^{-2}$

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4 years ago

Can a chemical reaction happen with only one substance? For example, if you select water as the first substance but you don't ad

KATRIN_1 [288]

Explanation:

Yes, a chemical reaction can happen with only one substance.

A typical example of such reaction is the radioactive decay.

Radioactive decay is the loss of elementary particles from an unstable nucleus, ultimately changing the unstable element into another more stable element. .

When radioactive elements are let alone, they decompose to form stable harmless elements.

An example of radioactive decay is attached in the image below;

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4 years ago

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jolli1 [7]

Answer:

B. first level consumers.

Explanation:

The first level consumers are also the primary consumers. They are the animals that depends or rely on plants to transform chemical energy into carbohydrates and sugar.

Primary consumers are mostly herbivores. They feed on plant matter by which they derive their nutrition. They have special enzymes that helps to convert plant materials into substances needed for their body.

So, the first level consumer takes plant matter and convert them into useful food materials for their own nutrition.

The second level consumers depend on the first level consumers for nutrition.

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3 years ago

What is the pressure in atm of a 5. 00 l tank with 2. 50 moles of oxygen

Umnica [9.8K]

Answer:

Explanation:

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3 years ago

WILL MARK BRAINLIEST!!! *please answer correctly*

WILL MARK BRAINLIEST!!! please answer correctly