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borishaifa [10]
3 years ago
7

Elements in the same period Question 7 options: A) form bonds with the same type of elements. B) have the same number of protons

. C) have the same number of valence electrons. D) have the same principal quantum number.
Chemistry
1 answer:
Marat540 [252]3 years ago
5 0

D is the answer .. I have send u pic also

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poizon [28]
You would ask bill nye he prolly know
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3 years ago
10g = __________ mg? *
PolarNik [594]

Answer:

Explanation:

as we know that

1g =1000mg

so

10g=10*1000

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4 years ago
PLEASE HELP!! Phytoplankton are one of the most important parts of the food web in the Hudson river. what evidence supports the
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Answer:

Your answer is b

Explanation:

the answer is b because if there is no phytoplankton then there will be no fish and if you take out one part of the food chain then the whole chain comes apart. So meaning if there is no phytoplankton, then there is no fish, if there isn't any fish, then the other animals that come to eat at the river will eventually starve to death or move somewhere else to get more food.

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3 years ago
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Which statement is true if the Delta.Hrxn of a reaction is positive? The reaction is endothermic. The reaction is exothermic. Th
KatRina [158]

Answer:

The reaction is endothermic.

Explanation:

Heat is absorbed in endothermic reactions. An endothermic process is any process which requires or absorbs energy from its surroundings, usually in the form of heat. It may be a chemical process, such as dissolving ammonium nitrate in water, or a physical process, such as the melting of ice cubes (wikipedia)

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3 0
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According to KMT, at constant pressure and temperature, the frequency and force of molecule-wall collisions are constant. So inc
Norma-Jean [14]

Answer:

Boyle´s Law

Explanation:

If we increase the volume of a gas, its pressure will decrease that is why in this question the pressure was decreased to  yield the decrease in the number of collisions.

This is Boyle´s law which states that the pressure of a gas is inversely proportional to the volume of its container.

It is expressed mathematically  as P₁V₁ = P₂V₂

where the subscripts refer to intial and final conditions.

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3 years ago
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