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3 years ago

Why does the rate of a reaction increase when the concentration of reactants is increased?

Chemistry

1 answer:

leva [86]3 years ago

5 0

If reactants eventually collide, there is an occurrence of reaction.

<span>
Therefore, when there is an increase concentration of reactant, meaning to say that there are several moles of it every unit volume. An example of this is a room having hundred of people will absolutely get higher concentration compared to a room with one individual only.

Pertaining to effective collisions, if ever there is an increase of concentration, the frequency and rate of effective collisions among reactants surges in such a way that the rate of reaction also surges. Same with passing into a room with only 1 individual compared to hundred people blind persons, you probably want to proceed to the room with several people.</span>

<span>This is the simple logic behind that scientific existence.</span>

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A chemist has 3.55x1022 molecules of nitrogen monoxide. How

Alina [70]

Answer:

<h2>0.059 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...$

We have the final answer as

<h3>0.059 moles</h3>

Hope this helps you

6 0

3 years ago

Could someone please tell show me steps to solve this, I am so confused.

jonny [76]

And this is y I should of paid attention in that one science class in middle school that taught this...

(￣▽￣;)

6 0

4 years ago

Which part of chromosomes passes in trait from parent to offspring

AfilCa [17]

Answer:

Genes

Explanation:

The genes are the basic unit of hereditary which are a part of chromosomes that are passed from parents to their offspring.

Genes are responsible for the propagation of hereditary features. They are usually located on the chromosome.

Genes are made up of protein molecules.

Each parent passes down a copy of their gene which are inherited by the offspring and they determine a character state.

They generally make up the genotype.

8 0

4 years ago

Consider the balanced equation of K I KI reacting with P b ( N O 3 ) 2 Pb(NOX3)X2 to form a precipitate. 2 K I ( a q ) + P b ( N

professor190 [17]

Answer: 50.7 grams

Explanation:

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}$

a) moles of $KI$

$\text{Number of moles}=molarity\times {\text {Volume in L]}=0.417M\times 0.528L=0.220moles$

The balanced chemical equation is:

$2KI(aq)+Pb(NO_3)_2(aq)\rightarrow PbI_2(s)+2KNO_3(aq)$

$KI$ is the limiting reagent as it limits the formation of product and $Pb(NO_3)_2$ is in excess.

According to stoichiometry :

2 moles of $KI$ give = 1 mole of $PbI_2$

Thus 0.220 moles of $KI$ give= $\frac{1}{2}\times 0.220=0.110moles$ of $PbI_2$

Mass of $PbI_2=moles\times {\text {Molar mass}}=0.110moles\times 461.01g/mol=50.7g$

Thus 50.7 g of $PbI_2$ will be formed.

6 0

4 years ago

Use the following balanced reaction to solve 1-3:

tino4ka555 [31]

Answer:

1.96g H2

Explanation:

P4 = 123.9g/mol

H2 = 2.02g/mol

$\frac{20g P_{4} }{1}$ * $\frac{1 mol P_{4} }{123.9g}$ * $\frac{6 mol H_{2} }{1 mol P_{4} }$ * $\frac{2.02g H_{2} }{1 mol H_{2} }$ = 1.96g H2

6 0

3 years ago