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3 years ago

What is DNA? Please help me out...if can

Chemistry

1 answer:

ahrayia [7]3 years ago

8 0

Dna is deoxyribonucleic acid. it carries genetic instructions used in growth and development in living organisms.

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A law that protects citizens against xenophobia

Llana [10]

The Promotion of Equality and Prevention of Unfair Discrimination Act, (PEPUDA or Equality Act, 4 of 2000

Explanation:

Xenophobia is known as the dislike for the people from other countries.

the law, prevents and prohibits discrimination and harrasment

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2 years ago

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Hi i need help. Select all the statements that are true.

motikmotik

Answer:

A, C, E

Explanation:

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3 years ago

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What is responsible for moving the water to the ground?

Mandarinka [93]

Answer:

Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.

Explanation:

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3 years ago

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The CRC Handbook, a large reference book of chemical and physical data, lists two isotopes of indium (). The atomic mass of 4.28

ivanzaharov [21]

Answer: The mass of second isotope of indium is 114.904 amu

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

.....(1)

Let the mass of isotope 2 of indium be 'x'

For isotope 1:

Mass of isotope 1 = 112.904 amu

Percentage abundance of isotope 1 = 4.28 %

Fractional abundance of isotope 1 = 0.0428

For isotope 2:

Mass of isotope 2 = x amu

Percentage abundance of isotope 2 = [100 - 4.28] = 95.72 %

Fractional abundance of isotope 2 = 0.9572

Average atomic mass of indium = 114.818 amu

Putting values in equation 1, we get:

$114.818=[(112.904\times 0.0428)+(x\times 0.9572)]\\\\x=114.904amu$

Hence, the mass of second isotope of indium is 114.904 amu

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3 years ago

Who is responsible for the general theory of relativity?

puteri [66]

Albert Einstein was responsible for the general theory of relativity. The general theory of relativity explains that what we recognize as the force of gravity in fact arises from the curvature of space and time. In the latency of matter and energy it can evolve, stretch and morph. Forming ridges, valleys and mountains that cause bodies moving through it to curve and zig-zag.

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3 years ago