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adell [148]
3 years ago
7

Question 24 of 25

Chemistry
2 answers:
Oksanka [162]3 years ago
6 0

Answer:

D. Electrons are gained and lost

Explanation:

Svetllana [295]3 years ago
3 0

Answer:

a. elements change phases.

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Alex saw a rusty old car in an abandoned lot. Because he had recently read about chemical reactions, he began to wonder how the
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3 years ago
In an ionic bond, nonmetals are most likely to
kompoz [17]
Non metals gain electrons from the metals to have an octet structure.
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1,4-Pentadiene has a AHhydro = -254 kJ/mol while trans-1,3-pentadiene has a AHhydra = -226 kJ/mol. Explain this difference in he
julsineya [31]

Answer:

trans-1,3-pentadiene is more stable than 1,4-pentadiene due to presence of a conjugated double bond.

Explanation:

Here, \Delta H_{hydro}=H(hydrogenated pdt.)-H(diene)

H(hydrogenated pdt.) is same for both 1,4-pentadiene and 1,3-pentadiene as they both produce pentane after hydrogenation

H(diene) depends on stability of diene.

More stable a diene, lesser will be it's H(diene) value (more neagtive).

trans-1,3-pentadiene is more stable than 1,4-pentadiene due to presence of a conjugated double bond.

Hence, \Delta H_{hydro} is higher (less negative) for trans-1,3-pentadiene

5 0
4 years ago
Which lunar phase will occur about four days after a waxing crescent?
Mamont248 [21]

Answer:3.5 days is awfully precise and waxing gibbous is awfully vague.Let’s just make sure we understand our terminology. Waxing means getting fatter and gibbous means fat. A waxing gibbous moon lasts for approximately 7 days from the first quarter phase right up to the full moon phase.By 3.5 days I’m assuming you mean half a week and simplifying the lunar phases to 28 days exactly.So we have:Day 0 New moon.Day 7 First quarter.Day 14 Full moon.Day 21 Third quarter.Day 28 New Moon.Between day 0 - 7 we have the waxing crescent phase.Between day 7–14 we have the waxing gibbous phase.Between day 14–21 we have the waning gibbous phase.Between day 21–28 we have the waning crescent phase.So 3.5 days from day 7 would take us to day 10.5 which would still leave us in the waxing gibbous phase. 3.5 days after day 10.5 would take us to the full moon or over into the waning gibbous phase since the full moon lasts only an instant.

Explanation:

3 0
2 years ago
If you have 30 g of carbon, 300 g of chlorine and 30 g of hydrogen to form chloroform, how many grams of chlorine and hydrogen a
alexira [117]

Explanation:

6×1.25×37.5= 281.5 g of chlorine

1×1.25×2= 2.5 g of hydrogen

8 0
3 years ago
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