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3 years ago

Identify the type of question, mg->mg^2+ +2e-

Chemistry

1 answer:

mash [69]3 years ago

7 0

The equation is an oxidation half-reaction, because the Mg is losing electrons to

form Mg²⁺.

Loss of Electrons is Oxidation and

Oxidation Is Loss of electrons.

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What is Keg for the reaction N2 + 3H2 = 2NH2 if the equilibrium

AlladinOne [14]

Answer: The equilibrium constant for the given reaction is 1.33

Explanation:

We are given:

Equilibrium concentration of ammonia = 2 M

Equilibrium concentration of nitrogen gas = 3 M

Equilibrium concentration of hydrogen gas = 1 M

For the given chemical equation:

$N_2+3H_2\rightleftharpoons 2NH_3$

The expression of $K_{eq}$ for above equation follows:

$K_{eq}=\frac{[NH_3]^2}{[N_2][H_3]^3}$

Putting values in above equation, we get:

$K_{eq}=\frac{(2)^2}{3\times (1)^3}\\\\K_{eq}=1.33$

Hence, the equilibrium constant for the given reaction is 1.33

4 0

3 years ago

What properties do atoms of the same element share? Select all that apply

Shalnov [3]

Answer: your answer is A

Explanation: the atoms has the same properties of the same element as the atomic number.

8 0

3 years ago

In a certain compound of iron and oxygen, FexOy, it is found that a sample of this compound weighing 6.285 g contains 4.396 g of

saveliy_v [14]

Answer:

Formula of oxide is $Fe_{2}O_{3}$

Explanation:

The given compound consists of Fe and O.

So, mass of oxygen in sample = (mass of sample) - (mass of Fe in sample)

= (6.285 g ) - (4.396 g)

= 1.889 g

Molar mass of O = 16 g/mol and molar mass of Fe = 55.845 g/mol

So, ratio of number of moles of Fe and O (Fe : O)

= $\frac{4.396}{55.845}:\frac{1.889}{16}$

= 0.0787 : 0.118

= $1:\frac{0.118}{0.0787}$

= 1 : 1.5

= 2 : 3

So, formula of oxide is $Fe_{2}O_{3}$

5 0

3 years ago

What type of reaction occurs initially with sodium azide when airbags initially deploy.

Luden [163]

The chemical at the heart of the air bag reaction is called sodium azide, or NaN3. CRASHES trip sensors in cars that send an electric signal to an ignitor. The heat generated causes sodium azide to decompose into sodium metal and nitrogen gas, which inflates the car's air bags.

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3 years ago

If 7.83 g of H 2 is reacted with 15.7 g of O 2 in the reaction 2H2 + O2 → 2H2O , what is the limiting reagent?

Marrrta [24]

When you take 7.83 g of H2, you convert to moles by dividing by the molar mass (2.02) and multiply by the number of H2s over H2Os. Then do the same for the O2. the limiting reagent in this case is the Oxygen by what I calculated.

8 0

3 years ago