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3 years ago

What is h3o in a solution of naoh whose concentration is 3.75

Chemistry

1 answer:

r-ruslan [8.4K]3 years ago

8 0

The H3O in a solution is 12.57.

Explanation:

The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH.

pOH = -log[H3O]

pOH = -log(3.75x10^-2)

= 1.43

Now, pH = 14 - 1.43

= 12.57

The H3O in a solution is 12.57.

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As the two parental (template) DNA strands separate at a replication fork, each of the strands is separately copied by a DNA pol

Lapatulllka [165]

Answer:

Synthesis of leading strand:

daughter strand elongate towards replication fork

only one primer is needed

made continuously

Synthesis of the lagging strand:

multiple primers needed

daughter strand elongates away from replication fork

made in segments

Synthesis of both:

synthesized in 5' to 3'

Explanation:

The replication of DNA involves the unwinding of the double helix structure by the helicase enzyme after which RNA primer binds to form a bubble known as the replication fork.

DNA can only be replicated in the 5' to 3' direction because the polymerase that is responsible for the elongation of new strands can only add nucleotides in the 5' to 3' direction.

Hence, the leading strand is replicated continuously in this direction while the lagging strand is replicated discontinuously or fragments known as the okazaki fragments. The discontinuous replication of the lagging strand therefore requires different primers biding at multiple sites on the DNA strand.

Because of the nature of replication of the lagging strand, the elongation of the fragments moves away from the replication fork while that of the leading strand moves towards the replication fork.

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3 years ago

A 250mL sample of air at STP contains approximately 52.5mL of O2. What is the percentage of oxygen in the air

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3 years ago

calculate the molar mass of nickel (iii)oxide to the nearest tenth place. Give both the numerial value and the units

maksim [4K]

Nickel (Ni) has the charge as +3 while oxygen (O) has -2. Hence, the chemical formula for the nickel (iii) oxide is Ni₂O₃.

molar mass of Ni = 58.69 g/mol
molar mass of O = 15.99 g/mol

number of Ni atoms in Ni₂O₃ = 2
Molar mass of Ni in Ni₂O₃ = 2 x 58.69 g/mol = 117.38 g/mol

number of O atoms in Ni₂O₃ = 3
Molar mass of O in Ni₂O₃ = 3 x 15.99 g/mol = 47.97 g/mol

Hence, molar mass of compound = 117.38 g/mol + 47.97 g/mol
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4 years ago

In subtractive color mixing, like with ink on paper, when all three primary colors are combined the result is?

Maslowich

Subtractive colors mixing with all three primaries will result in black.

<h3>How are the 3 primary subtractive colors combined?</h3>

Adding all three subtractive primary color filters together will absorb all the colors of the white light spectrum as appeared below. Each filter (or pigment) absorbs its harmonizing color and transmits (diffusely reflects) the others.

Primary colors union of these three results in white. The subtractive primary colors are related to the subtraction of light: cyan, magenta, and yellow, the colors used in four-color printing, the union of these results in black.

So we can conclude that the usually used subtractive primary colors are cyan, magenta, and yellow, and if you overlap all three in a successful equal mixture.

Learn more about colors here: brainly.com/question/911645

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1 year ago

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nasty-shy [4]

Answer:

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Explanation:

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4 years ago

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