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Sav [38]
2 years ago
8

What role does genetic variation play in the existence of an organism?

Chemistry
1 answer:
MissTica2 years ago
7 0
Genetic variation is important because it allows natural selection to increase or decrease frequency of alleles already in the population
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One gram of alum, KAl(SO4)2.12H2O, contains 1.3 × 1021 Al atoms. How many oxygen atoms are contained in 1.0 g alum?
Roman55 [17]

From the chemical formula, 1 formula unit of KAl (SO4)2.12H2O encompasses 1 atom of Al = 4 * 2 atoms of O in KAl (SO4)2 + 12 atoms of O in 12H2O which is equal to 20 atoms of O.

So, if you have 1.3 × 10^21 Al atoms, you have 20 * 1.3 × 10^21 O atoms will now be equal to 2.6 * 10^22 atoms of O.

6 0
3 years ago
Read 2 more answers
In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is _____.​
stepan [7]
<span>In water, naoh almost completely separates into na+ and oh- ions. thus, naoh is Stong base.
Strong bases and strong acids completely ionized in the water,So when NaOH is added into water, it is completely ionized and forms Na+ and OH- ions and it shows that it is a strong base.</span>
3 0
3 years ago
In this chemical formula: 3NH4 (ammonium) This chemical formula means there are 3 _____________ ___________, and 4 __________ __
seropon [69]

Answer:

hope it helped you

Explanation:

3 atoms of nitrogen and 4 atoms of hydrogen in each molecule

5 0
2 years ago
The speed of sound in air at 20° C is 343 m/s. Its speed in water at 20° C is 1,483 m/s. How much longer would it take for sound
Alona [7]
<h3>Answer:</h3>

22.41 seconds longer

<h3>Explanation:</h3>
  • Sound is a longitudinal wave that requires a material medium for transmission hence called a mechanical wave.
  • Examples of medium in which sound travels in are water and air.

From the question give;

Speed of sound in air at 20°C is 343 m/s

Speed of sound in water at 20°C is 1,483 m/s

We are given a distance of 10 Km or 10,000 m

We need to finder how much longer it will take for the sound to travel in air.

Time = Distance ÷ Speed

Therefore;

Time taken in Air = Distance ÷ speed of sound in air

                             = 10000 m ÷ 343 m/s

                             = 29.15 seconds

Time taken in water = Distance ÷ speed of sound in water

                                 = 10,000 ÷ 1,483 m/s

                                 = 6.74 seconds

Difference in time = 29.15 seconds - 6.74 seconds

                              = 22.41 seconds

Therefore, it takes 22.41 seconds longer for sound to travel through air than water.

8 0
3 years ago
What is mole concept? how to do its numericals​
Goryan [66]
6.02x10^23
basically written out

6.02 times 10 to the 23rd power if you’re using a calculator.

I TRIED SORRY! :)
4 0
2 years ago
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