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2 years ago

Which response includes all of the following that are single replacement reactions, and no other reactions?

Chemistry

1 answer:

Zanzabum2 years ago

4 0

Only 2nd reaction is a single replacement reaction

<h3>What is a single replacement reaction?</h3>

A single replacement reaction is a reaction in which an element is replaced by another element in a compound.

It is often called a single displacement reaction

The reactants in this reaction are always pure elements and an aqueous compound.

When this reaction occurs, a new aqueous compound and other pure elements are formed as products.

We can write a general single replacement reaction as:

$AB (aq) + C \rightarrow A + CB(aq)$

Hence, only 2nd reaction is a single replacement reaction that is

$Cl_2(g) + 2NaBr(aq) \rightarrow Br_2(l) + 2NaCl (aq)$

Disclaimer: The question was given incomplete on the portal. Here is the complete question

Question: Which response includes all of the following that is single replacement reactions and no other reactions?

$Li_2O(s) + CO_2(g) \rightarrow Li_2CO_3(s)$
$Cl_2(g) + 2NaBr(aq) \rightarrow Br_2(l) + 2NaCl (aq)$
$HNO_3(aq) + KOH (aq) \rightarrow KNO_3(aq) + H_2O (l)$
$SO_3(l) + H_2O \rightarrow H_2SO_4$

Learn more about single replacement reaction:

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Rewrite this measurement with a simpler unit, if possible. <br> 8.3 kg•m^2/ s^2

Feliz [49]

Answer: 8.3 J

Explanation:

We have the following measurement:

$8.3 \frac{kg m^{2}}{s^{2}}$

Rearranging the units:

$8.3 \frac{kg m}{s^{2}}m$

Since 1 Newton is $1 N=1 \frac{kg m}{s^{2}}$ :

$8.3 Nm$

Since 1 Joule is $1 J=1 Nm$ :

$8.3 J$ This is the simplest form possible

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3 years ago

Which type of bond forms when two or more atoms share electrons?.

shepuryov [24]

Answer:

Covalent

Explanation:

Covalent is the sharing of electrons and Ionic is transferring of electrons.

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2 years ago

Read 2 more answers

A particular reaction, A- products, has a rate that slows down as the reaction proceeds. The half-life of the reaction is found

Thepotemich [5.8K]

Explanation:

Half life of zero order and second order depends on the initial concentration. But as the given reaction slows down as the reaction proceeds, therefore, it must be second order reaction. This is because rate of reaction does not depend upon the initial concentration of the reactant.

a. As it is a second order reaction, therefore, doubling reactant concentration, will increase the rate of reaction 4 times. Therefore, the statement a is wrong.

b. Expression for second order reaction is as follows:

$\frac{1}{[A]} =\frac{1}{[A]_0} +kt$

the above equation can be written in the form of Y = mx + C

so, the plot between 1/[A] and t is linear. So the statement b is true.

Expression for half life is as follows:

$t_{1/2}=\frac{1}{k[A]_0}$

As half-life is inversely proportional to initial concentration, therefore, increase in concentration will decrease the half life. Therefore statement c is wrong.

Plot between A and t is exponential, therefore there is no constant slope. Therefore, the statement d is wrong

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3 years ago

A salt is best described as a compound that is formed from the reaction between

kaheart [24]

Answer:

Explanation:

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4 years ago

1. EXPLAIN the steps required to find the molar mass of NH3 . Also,

Natasha_Volkova [10]

Answer: Molar mass of $NH_3$ is 17.03 g

Explanation:

Molar mass is defined as the mass in grams of 1 mole of a substance.

S.I Unit of Molar mass is gram per mole and it is represented as g/mol.

It is found by adding the atomic masses of all the elements present.

Atomic Mass of Nitrogen (N) = 14.007 g

Atomic Mass of Hydrogen (H) = 1.008 g

Molar mass of $NH_3$ = 1(14.007)+3(1.008) g = 17.03 g

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3 years ago