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Olenka [21]
3 years ago
8

What are sister chromatids

Chemistry
1 answer:
Pavel [41]3 years ago
4 0
Sister chromatids are two identical copies of a single chromosome that are connected by a centromere. They occur as a result of a chromosome that  duplicated during the S phase of the cell cycle.
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How many grams of glycerine, C3H8O3, are needed to make 100. mL of 2.60 M solution?
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Answer:

the mass of the glycerine needed in the given solution is  23.92 g

Explanation:

Given;

molarity of the solution (C₃H₈O₃), C = 2.60 M

Volume of the solution, V = 100 mL = 100 x 10⁻³ L = 0.1 M

The molarity of a solution is given as follows;

Molarity = \frac{amount \ of \ solute \ (moles)}{volume \ of \ solution \ (L)} \\\\amount \ of \ solute \ (moles) = Molarity  \ \times volume \ of \ solution \ (L)\\\\amount \ of \ solute \ (moles) = 2.6 \times 0.1 \\\\amount \ of \ solute \ (moles) = 0.26 \ mole

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molecular mass = (12 x 3) + (8 x 1) + (16 x 3)

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The mass of the glycerine needed in the given solution is calculated as follows;

reacting mass = amount of solute (moles)   x   molecular mass (g/mol)

reacting mass = 0.26 x 92

reacting mass = 23.92 g

Therefore, the mass of the glycerine needed in the given solution is  23.92 g

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