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Vladimir [108]
3 years ago
7

I need help with my quiz.

Chemistry
2 answers:
lidiya [134]3 years ago
5 0
C because i did it lol okay bye ty so
katrin2010 [14]3 years ago
4 0

Answer:

C

Explanation:

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Rust is a compound with the formula F e 2 O 3 . Which elements combine to form rust?
DanielleElmas [232]
Remembering the periodic table, Fe is iron and O is oxygen. The elements that combine to create rust are iron and oxygen, with the chemical compound being (Iron)2(Oxygen)3.
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3 years ago
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What substance is reduced in the reaction 2Fe 2+ + CI2 = 2Fe 3+ + 2CI- ?
atroni [7]

Answer:

$Cl_{2}$ is reduced in the reaction

Explanation:

The given reaction is

$2Fe^{2+}+Cl_{2} \to 2Fe^{3+}+2Cl^{-}$

The oxidation number of $Fe$ is changed from $+2\, \to \, +3$

$Fe^{2+} \to Fe^{3+}+e^{-}$

And The oxidation number of $Cl$ is changed from $0\, \to \, -1$

$Cl_{2}^{0} + 2e^{-} \to 2Cl^{-}$

Hence, $Fe^{2+}$ is oxidized and $Cl_{2}$ is reduced

5 0
4 years ago
Water acts as a solvent.<br> a. True<br> b. False
Talja [164]
True. Water acts as a solvent as the solute dissolves into water. 
7 0
4 years ago
Where is the sun shining most directly when we are having summer in the Northern Hemisphere?
NNADVOKAT [17]
The sun will always hit the equator the most no matter the season because of Earths tilt. Which means the Northern tip of South America near Brazil and Colombia will get the most sun.<span />
8 0
4 years ago
Magnesium has three naturally occurring isotopes with masses of 23.99, 24.99, and 25.98 amu and natural abundances of 78.99%, 10
Elodia [21]

Answer:

24.309

Explanation:

Let A, B, and C represent the three isotopes.

For isotope A:

Mass number = 23.99

Abundance = 78.99%

For isotope B:

Mass number = 24.99

Abundance = 10.00%

For isotope C:

Mass number = 25.98

Abundance = 11.01%

Atomic mass of Mg =?

Atomic mass = [(Mass of AxA%)/100] + [(Mass of BxB%)/100] + [(Mass of CxC%)/100]

Atomic Mass = [(23.99x78.99)/100] + [(24.99x 10)/100] + [(25.98x11.01)/100]

Atomic number = 18.950 + 2.499 + 2.860

Atomic mass of Mg = 24.309

3 0
4 years ago
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