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dimulka [17.4K]

1 year ago

15

A chemical reaction resulting in the transfer of electrons or hydrogen atoms from one molecule to another is called a(n) _______

reaction.

2 answers:

anzhelika [568]1 year ago

7 0

The kind of reaction involving the transfer of electrons or hydrogen away from a molecule is called oxidation.

In the same vein, the molecule that receives the electron or the hydrogen atom is said to be reduced. This means that oxidation cannot exist in isolation without reduction.

In other words, oxidation is defined as:

Loss of electrons
Loss of hydrogen atoms
Gain of oxygen atoms
Gain in oxidation number

While reduction is defined as:

Gain of electrons
Gain of hydrogen atom
Loss of oxygen atom
Reduction in oxidation number

More on oxidation/reduction reactions can be found here: brainly.com/question/3867774

MariettaO [177]1 year ago

4 0

Answer:

Explanation:

Oxidation reaction

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How many moles of n are in 0.185 g of n2o?

pickupchik [31]

The mass of $N_{2}O$ is 0.185 g.

To calculate the number of moles first calculate the molar mass of $N_{2}O$ .

$M_{N_{2}O}=2\times M_{N}+M_{O}$

Molar mass of nitrogen and oxygen is 14 g/mol and 16 g/mol respectively

Thus, $M_{N_{2}O}=2\times 14 g/mol+18 g/mol=44 g/mol$

Now, number of moles can be calculated from mass and molar mass as follows:

$n=\frac{m}{M}=\frac{0.185 g}{44 g/mol}=0.0042 mol$

Therefore, number of moles of 0.185 g $N_{2}O$ is 0.0042 mol.

8 0

3 years ago

Read 2 more answers

Calculate the number of moles and the mass of the solute in each of the following solutions:

frosja888 [35]

<u>Answer:</u>

<u>For a:</u> The number of moles of KI are $2.7\times 10^{-5}$ and mass is $4.482\times 10^{-3}g$

<u>For b:</u> The number of moles of sulfuric acid are $1.65\times 10^{-5}$ and mass is $1.617\times 10^{-3}g$

<u>For c:</u> The number of moles of potassium chromate are $2.84\times 10^{-2}$ and mass is 5.51 g.

<u>For d:</u> The number of moles of ammonium sulfate are 39.018 moles and mass is 5155.84 grams.

<u>Explanation:</u>

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}}{\text{Volume of solution (in L)}}$ .....(1)

To calculate the number of moles of a substance, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(2)

<u>For a:</u>

Molarity of KI = $8.23\times 10^{-5}M$

Volume of solution = 325 mL = 0.325 L (Conversion factor: 1 L = 1000 mL)

Putting values in equation 1, we get:

$8.25\times 10^{-5}mol/L=\frac{\text{Moles of KI}}{0.325L}\\\\\text{Moles of KI}=2.7\times 10^{-5}mol$

Now, using equation 2, we get:

Moles of KI = $2.7\times 10^{-5}mol$

Molar mass of KI = 166 g/mol

Putting values in equation 2, we get:

$2.7\times 10^{-5}mol=\frac{\text{Mass of KI}}{166g/mol}\\\\\text{Mass of KI}=4.482\times 10^{-3}g$

Hence, the number of moles of KI are $2.7\times 10^{-5}$ and mass is $4.482\times 10^{-3}g$

<u>For b:</u>

Molarity of sulfuric acid = $22\times 10^{-5}M$

Volume of solution = 75 mL = 0.075 L

Putting values in equation 1, we get:

$22\times 10^{-5}mol/L=\frac{\text{Moles of sulfuric acid}}{0.075L}\\\\\text{Moles of }H_2SO_4=1.65\times 10^{-5}mol$

Now, using equation 2, we get:

Moles of sulfuric acid = $1.65\times 10^{-5}mol$

Molar mass of sulfuric acid = 98 g/mol

Putting values in equation 2, we get:

$1.65\times 10^{-5}mol=\frac{\text{Mass of }H_2SO_4}{98g/mol}\\\\\text{Mass of }H_2SO_4=1.617\times 10^{-3}g$

Hence, the number of moles of sulfuric acid are $1.65\times 10^{-5}$ and mass is $1.617\times 10^{-3}g$

<u>For c:</u>

Molarity of potassium chromate = $0.1135M$

Volume of solution = 0.250 L

Putting values in equation 1, we get:

$0.1135mol/L=\frac{\text{Moles of }K_2CrO_4}{0.250L}\\\\\text{Moles of }K_2CrO_4=2.84\times 10^{-2}mol$

Now, using equation 2, we get:

Moles of potassium chromate = $2.84\times 10^{-2}mol$

Molar mass of potassium chromate = 194.2 g/mol

Putting values in equation 2, we get:

$2.84\times 10^{-2}mol=\frac{\text{Mass of }K_2CrO_4}{194.2g/mol}\\\\\text{Mass of }K_2CrO_4=5.51g$

Hence, the number of moles of potassium chromate are $2.84\times 10^{-2}$ and mass is 5.51 g.

<u>For d:</u>

Molarity of ammonium sulfate = 3.716 M

Volume of solution = 10.5 L

Putting values in equation 1, we get:

$3.716mol/L=\frac{\text{Moles of }(NH_4)_2SO_4}{10.5L}\\\\\text{Moles of }(NH_4)_2SO_4=39.018mol$

Now, using equation 2, we get:

Moles of ammonium sulfate = 39.018 mol

Molar mass of ammonium sulfate = 132.14 g/mol

Putting values in equation 2, we get:

$39.018mol=\frac{\text{Mass of }(NH_4)_2SO_4}{132.14g/mol}\\\\\text{Mass of }(NH_4)_2SO_4=5155.84g$

Hence, the number of moles of ammonium sulfate are 39.018 moles and mass is 5155.84 grams.

3 0

3 years ago

What do you expect will occur as air masses move over cold locations? Hot locations? How does this movement of air masses affect

Maksim231197 [3]

Answer:

Explanation:

When air masses will move over cold location then bottom layer of air cools and become more dense. Due to its high density it is trapped near the ground then it flow towards the equator.

When it moves over hot location then bottom layer gets hot and lighter. Then it moves towards poles.

It changes the temperature and humidity of the climate. making hoter region coll and cooler region a bit hot.

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2 years ago

A reaction occurs when one compound reacts and is broken down into different elements or simpler compounds.

Inessa [10]

Answer:

Decomposition Reaction

Explanation:

If you are referring to what type of reaction that occurred then the answer would be decomposition reaction.

This is a chemical reaction where one reactant is broken down into two or more products.

REACTANT → PRODUCT

AB → A + B

The products can be two or more elements or two or more compounds, depending on what was decomposed.

3 0

2 years ago

Read 2 more answers

What are the oxidation numbers of the atoms in this reaction?

ipn [44]

A, B and D should be the ones you should check

8 0

3 years ago