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nadezda [96]
3 years ago
11

Work shown would be appreciated ❤️ 20 points!!!!

Chemistry
1 answer:
MArishka [77]3 years ago
3 0

Answer:

35.453 amu.

Explanation:

From the question given above, the following data were obtained:

Isotope A (Cl–35):

Abundance (A%) = 75.77%

Mass of A = 34.969 amu

Isotope B (Cl–37):

Abundance (B%) = 24.23%

Mass of B = 36.966 amu

AVERAGE atomic mass of Cl =?

The average atomic mass of Cl can be obtained as follow:

Average = [(Mass of A × A%)/100] + [(Mass of B × B%)/100]

Average = [(34.969 × 75.77)/100] + [(36.966 × 24.23)/100]

Average = 26.496 + 8.957

Average atomic mass of Cl = 35.453 amu.

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Earthquake

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3 years ago
Calculate the pH of a solution in which [OH–] = 4.5 × 10–9M.
posledela

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5.65 is the pH.

Explanation:

I am assuming that you are asking for confirmation on your answer. The answer is 5.65.

You would do:

[pOH] = -log[OH-]

          = -log[4.5*10^-9]

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To find pH your would subtract the pOH from 14.

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7 0
3 years ago
Explain the term respiration and how this process increases the percentage of carbon dioxide in the atmosphere.
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Please find the explanation to this question below.

Explanation:

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3 years ago
Give the chemical symbol of an element in the third period (row) of the periodic table with four 3p electrons.
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7 0
2 years ago
fills a 500.mL flask with 3.6atm of carbon monoxide gas and 1.2atm of water vapor. When the mixture has come to equilibrium she
enot [183]

Answer:

The answer to the question is

The pressure of carbon dioxide after equilibrium is reached the second time is 0.27 atm rounded to 2 significant digits

Explanation:

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when an extra 1.8 atm of CO is added we get Increase in the mole fraction of CO we have one mole of CO produces one mole of H₂

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7 0
3 years ago
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