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3 years ago

What is the main difference between active and passive transport

Chemistry

1 answer:

labwork [276]3 years ago

4 0

Answer: I would say B.

Explanation:

Active transport requires energy, while passive does not.

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What happens when sugar disolves in water?

Elis [28]

First, the sugar dissolves into small sugar molecules, Then fills in the spaces in between the water molecules thus, making Sugar water.

I hope that answered your question and has come to your help.

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4 years ago

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In your own words right a definition of earth core

Rasek [7]

The Earth's core is the part of Earth in the middle of our planet. It has a solid inner coreand a liquid outer core.

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3 years ago

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2. Consider the reaction 2NO(g) + O2(g) → 2NO2(g) Suppose that at a particular moment during the reaction nitric oxide (NO) is r

vredina [299]

Answer :

(a) The rate of $NO_2$ formed is, 0.066 M/s

(b) The rate of $O_2$ formed is, 0.033 M/s

Explanation : Given,

$\frac{d[NO]}{dt}$ = 0.066 M/s

The balanced chemical reaction is,

$2NO(g)+O_2(g)\rightarrow 2NO_2(g)$

The rate of disappearance of $NO$ = $-\frac{1}{2}\frac{d[NO]}{dt}$

The rate of disappearance of $O_2$ = $-\frac{d[O_2]}{dt}$

The rate of formation of $NO_2$ = $\frac{1}{2}\frac{d[NO_2]}{dt}$

As we know that,

$\frac{d[NO]}{dt}$ = 0.066 M/s

(a) Now we have to determine the rate of $NO_2$ formed.

$\frac{1}{2}\frac{d[NO_2]}{dt}=\frac{1}{2}\frac{d[NO]}{dt}$

$\frac{d[NO_2]}{dt}=\frac{d[NO]}{dt}=0.066M/s$

The rate of $NO_2$ formed is, 0.066 M/s

(b) Now we have to determine the rate of molecular oxygen reacting.

$-\frac{d[O_2]}{dt}=-\frac{1}{2}\frac{d[NO]}{dt}$

$\frac{d[O_2]}{dt}=\frac{1}{2}\times 0.066M/s=0.033M/s$

The rate of $O_2$ formed is, 0.033 M/s

6 0

3 years ago

Material of density of 762 kg/m3 occupies a container

konstantin123 [22]

Answer:

The answer is

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

<h3>mass = Density × volume</h3>

From the question

density = 762 kg/m³

We must first convert the volume from cm³ to m³

$1 \: {cm}^{3} = 1 \times {10}^{ - 6} {m}^{3}$

So 99 cm³ will be

$9.9 \times {10 }^{ - 5} \: \: {m}^{3}$

So the mass of the material is

$mass = 762 \times 9.9 \times {10}^{ - 5} \\ = 0.075438$

We have the final answer as

Hope this helps you

4 0

4 years ago

Read 2 more answers

Which particles in atoms have a negative electric charge?

Verdich [7]

Answer:

Electrons

Explanation:

Atoms both have negative and positive particles

Protons are positive

Electrons are negative

Neutrons are neutral

Nuclei is where you find both neutrons and protons in an atom

6 0

3 years ago