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julia-pushkina [17]
3 years ago
7

Need help with science

Chemistry
2 answers:
Sergio [31]3 years ago
8 0

Answer:

roughly 4 from my perspective

nignag [31]3 years ago
3 0
4 is the answer hope it helps
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If 14.5 g of MnO4- (permanganate) react with manganese (II) hydroxide how many grams of manganese (IV) oxide will be produced? T
Veronika [31]

Answer:

m_{MnO_2}=21.2gMnO_2

Explanation:

Hello,

In this case, given the balanced reaction:

2MnO_4^-+2Mn(OH)_2\rightarrow 4MnO_2+2OH^-+H_2O

We can see a 2:4 mole ration between permanganate ion (118.9 g/mol) and manganese (IV) oxide (86.9 g/mol), that is why the resulting mas of this last one turns out:

m_{MnO_2}=14.5gMnO_4^-*\frac{1molMnO_4^-}{118.9gMnO_4^-}*\frac{4MnO_2}{2molMnO_4^-}  *\frac{86.9gMnO_2}{1molMnO_2} \\\\m_{MnO_2}=21.2gMnO_2

Best regards.

5 0
4 years ago
In order for a plant to complete photosynthesis, all of the following need to be present except:
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4 0
3 years ago
Neon has 8 electrons in its outer shell. Does it need to bond?<br> Why or Why not.
AveGali [126]

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6 0
4 years ago
12. What is the name of the compound MnF,? (Chapter 9)
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3 0
3 years ago
Read 2 more answers
When (1R,2R)-1-chloro-2-methylcyclohexane is heated with NaOCH3, the predominant product is...?
Alika [10]

Answer: The correct answer is option E.

Explanation:

When (1R,2R)-1-chloro-2-methylcyclohexane is heated with a strong base such as NaOCH3, the predominant product will be an alkene.

It is important to note that when such compounds undergo elimination as a result of heat, the resultant product is usually an alkene.

The available options are:

A. 3-methylcyclohex-1-ene (racemic)

B. methylcyclohexene

C. (1S,2R)-1-methoxy-2-methylcyclohexane

D. (S)-3-methylcyclohex-1-ene

E. (R)-3-methylcyclohex-1-ene

F. (1R,2R)-1-methoxy-2-methylcyclohexane

The correct answer is E.

Therefore, the compound will undergo elimination reaction to give an alkene( . (R)-3-methylcyclohex-1-ene ).

8 0
4 years ago
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