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atroni [7]
3 years ago
5

How many grams of hydrogen gas would be needed to form 8.0 grams of water? H2+O2=H2O

Chemistry
1 answer:
shtirl [24]3 years ago
6 0
16 atoms of hydrogen and 8 atoms of oxygen
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Is Fe2+ + 2e- = Fe an oxidation or reduction
Law Incorporation [45]

Answer:

oxidation

Explanation:

6 0
3 years ago
Identify the oxidized substance, the reduced substance, the oxidizing agent, and the reducing agent in the redox reaction. Cu(s)
spin [16.1K]

<u>Answer:</u> Copper is getting oxidized and is a reducing agent. Silver is getting reduced and is oxidizing agent.

<u>Explanation:</u>

Oxidation reaction is defined as the reaction in which an atom looses its electrons. Here, oxidation state of the atom increases.

X\rightarrow X^{n+}+ne^-

Reduction reaction is defined as the reaction in which an atom gains electrons. Here, the oxidation state of the atom decreases.

X^{n+}+ne^-\rightarrow X

Oxidizing agents are defined as the agents which oxidize other substance and itself gets reduced. These agents undergoes reduction reactions.

Reducing agents are defined as the agents which reduces the other substance and itself gets oxidized. These agents undergoes reduction reactions.

For the given chemical reaction:

Cu(s)+2AgNO_3(aq.)\rightarrow 2Ag(s)+Cu(NO_3)_2(aq.)

The half reactions for the above reaction are:

<u>Oxidation half reaction:</u>  Cu(s)\rightarrow Cu^{2+}(aq.)+2e^-

<u>Reduction half reaction:</u>  2Ag^+(aq.)+2e^-\rightarrow 2Ag(s)

From the above reactions, copper is loosing its electrons. Thus, it is getting oxidized and is considered as a reducing agent.

Silver is gaining electrons and thus is getting reduced and is considered as an oxidizing agent.

4 0
3 years ago
Magnesium has three common isotopes.
sladkih [1.3K]

Answer:

Explanation:

percentage abundance of third isotope = 100 - ( 78.900 + 10.009)

= 11.091 %

Atomic mass

24.1687 x .789 + 25.4830 x .10009 + 24.305 x .11091  

19.069 + 2.5506 + 2.69566

= 24.3153 amu

7 0
3 years ago
How are elements in each group the same?
Amanda [17]

Answer:

They share the same number of electrons in their valence subshells.

Explanation:

They have the same number of electrons on the outer shell.

6 0
3 years ago
What’s the answer to these 3 questions? thanks!
Citrus2011 [14]
Water has h bonding
H-H
Sodium fluoride
I think
4 0
3 years ago
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