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3 years ago

How many electrons does a single hydrogen gain or lose in the following reaction? H2 + O2 - H20

Chemistry

1 answer:

nirvana33 [79]3 years ago

4 0

Answer:

One electron per single hydrogen atom.

Explanation:

Hello!

In this case, given the reaction:

$H_2+O_2\rightarrow H_2O$

Whereas we can identify the following half-reaction for hydrogen:

$H_2^0\rightarrow H_2^+$

Whereas we see that each single hydrogen atom gains one electron in order to go from 0 to +1, which is also related to an oxidation half-reaction.

Best regards!

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Fe2O3 + 3 Mg --> 2 Fe + 3 MgO reaction type

Bingel [31]

Answer: I'm not sure what answer to give you since there are no answer choices, but here is what I got.

Explanation:

Mg is a reducing agent, Fe 2O 3 is an oxidizing agent.

Igniting a mixture of Fe2O3 and Al with a magnesium ribbon fuse produces molten iron and aluminum oxide in an impressive exothermic reaction.

Hope this helped a little:(

5 0

3 years ago

Which types of electron orbitals will have higher energy than a 4d orbital?

alexdok [17]

Answer:

D) 4f

Explanation:

To determine which electron orbital that will have higher energy than a 4d orbital, we write the electron configuration starting with s-orbital.

2s 2p

3s 3p 3d 3f

4s 4p 4d 4f

5s 5p 5d 5f

6s 6p 6d 6f

7s 7p 7d 7f

In ascending order, 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 3f, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 6f, 7d, 7f.

From the electronic configuration formula above, the electron orbitals that have higher energy than a 4d orbital are 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p, 6f, 7d, 7f.

Therefore, 4f is the correct answer.

8 0

3 years ago

A phase diagram shows phase changes of a substance by illustrating which of the following?

EastWind [94]

Answer:

D) Pressure vs. temperature

Explanation:

A phase diagram is a graph that shows the physical states of a substance under different conditions of temperature and pressure.

For example, the phase diagram below shows the different combinations of temperature and pressure under which water can exist as a solid, a liquid, or a gas.

3 0

3 years ago

12.0 g NaHSO4 (MM: 120.1 g/mol) is dissolved in water to make a 2.00 L solution. What is the molarity of the resulting NaHSO4 so

dexar [7]

Answer:

0.05 M

Explanation:

First we convert 12 g of NaHSO₄ into moles, using the given molar mass:

12 g NaHSO₄ ÷ 120.1 g/mol = 0.10 mol NaHSO₄

We can now calculate the molarity of the resulting solution, using the calculated number of moles and the given volume:

Molarity = moles / liters

Molarity = 0.10 mol / 2.00 L = 0.05 M

5 0

3 years ago

Read 2 more answers

g Consider the reaction when aqueous solutions of potassium hydroxide and ammonium bromide are combined. The net ionic equation

vichka [17]

Answer:

K^+(aq) + Br^-(aq) -----> KBr(aq)

Explanation:

The net ionic equation shows the actual reaction that occurs in the system. The molecular reaction equation includes the spectator ions but the net ionic equation does not include the spectator ions.

Spectator ions do not participate in the main reaction going on in the system.

Hence, for the reaction of potassium hydroxide and ammonium bromide, we have;

K^+(aq) + Br^-(aq) -----> KBr(aq)

8 0

4 years ago