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Studentka2010 [4]
3 years ago
12

Please help 15 points

Chemistry
1 answer:
Rus_ich [418]3 years ago
4 0

Nitrogen gained 4 electrons.

Because Nitrogen's redox number went from +6 to +2, it must have gained 4 electrons (-4) in order to achieve this number. Thus, Nitrogen is reduced.

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C3H8 + 2O2 → <br> I don’t known what this equation reacts to make
djyliett [7]
It is a combustion reaction. C3H8 will react with oxygen to form carbon dioxide and water.
8 0
3 years ago
Atoms that are sp2 hybridized form how many pi bonds?
vova2212 [387]
Sp2 hybridization forms 1 sigma bond and 1 pi bond.
3 0
4 years ago
If you tried forming an ionic bond between sodium and aluminum, would it work? Why? (please help! this is for a friend)
sineoko [7]

Answer:

The answer to your question is No

Explanation:

Ionic bonding is a kind of bonding that involves the attraction between oppositely charged ions. That means that one element must have a positive charge and the other a negative charge.

Also, the difference in electronegativity of both elements must be higher than 1.7.

Both Sodium and Aluminum are positively charged then an ionic bond is not possible to be formed.

Difference of electronegativity = 1.61 (Al) - 0.93(Na)

                                                    = 0.63

To form an ionic bond the difference of electronegativity must be higher than 1.7.

3 0
3 years ago
How many moles does 21. 7 L of gas at STP represent?
Oduvanchick [21]

Answer:

.96875 moles

Explanation:

22.4 liters per mole at STP for a gas

21.7 / 22.4 = .96875 moles

3 0
2 years ago
Consider the fermentation reaction of glucose: C6H12O6 → 2C2H5OH + 2CO2 A 1.00-mol sample of C6H12O6 was placed in a vat with 10
inessss [21]

Answer:

% yield = 73.48 %

Explanation:

The fermentation reaction is:

C₆H₁₂O₆  →  2C₂H₅OH + 2CO₂          

The percent yield of C₂H₅OH is given by:

\% yield = \frac{m_{E}}{m_{T}} * 100

<em>where m_{E}: is the obtained mass of C₂H₅OH = 67.7g and m_{T}: is the theoretical mass of C₂H₅OH.     </em>

The theoretical mass of C₂H₅OH is calculated knowing that 1 mol of C₆H₁₂O₆ produces 2 moles of C₂H₅OH:  

m_{T} = mol * M

<em>where M: is the molar mass of C₂H₅OH =  46.068 g/mol</em>

m_{T} = 2 moles * 46.068 g/mol = 92.136 g                

Hence, the percent yield of C₂H₅OH is:

\% yield = \frac{67.7 g}{92.136 g}*100 = 73.48 \%

I hope it helps you!                  

3 0
3 years ago
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