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xxTIMURxx [149]
3 years ago
8

Which of the following waves are mechanical waves?

Chemistry
1 answer:
Svetllana [295]3 years ago
7 0
D. Sound waves are a type of mechanical wave
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What happens to carbon in plants when the plants die.
Korvikt [17]

Answer:

Released into the atmosphere

Explanation:

The carbon that the plant had been storing when it was alive, would be released upon death into the soil

4 0
2 years ago
From the standpoint of entropy, consider the following processes: water boiling, mixing cola and root beer sodas, and assembling
Triss [41]

Answer:

b) Water boiling and mixing cola and root beer sodas are favorable processes, but assembling a house of cards is not.

Explanation:

Entropy, a measure of a system's thermal energy per unit of temperature that cannot be used to do work. Work, is obtained from directed motion of molecules, it follows the the amount of entropy is a measure of the molecular randomness, or disorder, of the system. As such increased entropy increases randomness hence water boiling and mixing cola and root beer sodas are favorable processes, but assembling a house of cards which requires a great deal of effort is not.

7 0
3 years ago
How many moles of Boron are present in 20g of borax (sodium tetraborate)?​
stira [4]
20 grams of borax contains (20.0g) / (201 g mol -1) =0.10 mol of borax.

Therefore 0.40 mol of borax
5 0
3 years ago
How do the number of electrons in the second energy shell of an atom change going across period 2 in the periodic table?
weqwewe [10]
The answer should be A, the number of electrons increases by 1, from left to right.

Across the periods (horizontal direction) in periodic table, each element has one more electron then the one before it. The number of period determines the number of occupied electron shells of the elements in that period. Which means, period 1 elements have 1 occupied electron shell, period 2 has 2, period 3 has 3 etc.

Therefore, the answer is A, we always go from left to right, and plus since period 2 elements only have 2 occupied electrons so their 2nd electron shell electrons must increase throughout the period.
8 0
3 years ago
Name of Place
Rus_ich [418]

Explanation:

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5 0
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