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sertanlavr [38]
3 years ago
14

Plz Help Will Upvote

Chemistry
1 answer:
My name is Ann [436]3 years ago
3 0
A.helium<span>Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomic number; oxygen has abundance rank 3, but atomic number 8.</span>
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Which characteristic can be inherited?
FinnZ [79.3K]

Answer:

long toes

Explanation:

the other traits are personality related, not a biological factor. they can be learned, but not inherited

6 0
2 years ago
HELP IT’S ABOUT TO BE DUE!
Vinil7 [7]
The answer is b
Explanation:
7 0
3 years ago
During cooling, the kinetic energy of the molecules falls. Why does this happen?
katrin [286]

<span>During cooling, the kinetic energy of the molecules falls, be</span>cause, when cooling a substace, the particles (molecules) slow down.


The kinetic energy is related to the speed, such that the lower speed the lower kinetic energy.


Particles can translate and vibrate, in the case of gases and liquids, and only vibrate (in the case of solids).


As a substance is cooled the particles get closer and the motion (translation and vibration), slows down. You can see by the equation of the kinetic energy (KE):


KE = [1/2]mass×(speed)² that as the speed is lower the KE will also be lower.


Additionally, when the cooling does not drive a change of phase (gas to liquid, liquid to solid, or solid to gas), it drives a decrease on temperature. In this case you should know that the temperature is a measure of the kinetic energy: the lower the temperature, the lower the kinetic energy.




3 0
3 years ago
Read 2 more answers
Which of the following atoms is smallest: nitrogen, phosphorus, or arsenic?
snow_lady [41]

Answer:

arsenic

Explanation:

nitrogen=155pm

phosphorus=195pm

arsenic =between 38 μm and 25 mm

3 0
3 years ago
A student makes a mistake while preparing a vitamin C sample for titration and adds the potassium iodide solution twice. How wil
LiRa [457]

The added KI does not have any impact  

The reaction invovles Titration of vitaminc ( Ascorbic acid)

ascorbic acid + I₂ → 2 I⁻  +  dehydroascorbic acid

the excess iodine is free reacts with the starch  indicator, forming the blue-black starch-iodine complex.  

This is the endpoint of the titration. since alreay excess KI is added ( the source of Iodine), it does not have an influence.

Answer B

Hope this helps!

5 0
3 years ago
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