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pychu [463]
3 years ago
8

A 5.60 g sample of a weak acid with

Chemistry
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

pKa = - log Ka = - log (1.3 * 10^-4) = 3.886 5.20 mL of 6.20 M NaOH = 0.00520 L * 6.20 mole…

Explanation:

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B

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What is the mass of 1.84 mol NaCl?
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Sent a pic that shows the work and answer is in box.

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Determine the pressure in atm exerted by 1 mole of methane placed into a bulb with a volume of 244.6 mL at 25°C. Carry out two c
Nuetrik [128]

The pressure in atm exerted by 1 mole of methane placed into a bulb with a volume of 244.6 mL at 25°C is 101.94atm.

<h3>How to calculate pressure?</h3>

The pressure of an ideal gas can be calculated using the following formula:

PV = nRT

Where;

  • P = pressure
  • V = volume
  • n = number of moles
  • R = gas law constant
  • T = temperature

According to information in this question;

  • T = 25°C = 25 + 273 = 298K
  • V = 244.6mL = 0.24L
  • R = 0.0821 Latm/Kmol

P × 0.24 = 1 × 0.0821 × 298

0.24P = 24.47

P = 24.47/0.24

P = 101.94atm

Therefore, the pressure in atm exerted by 1 mole of methane placed into a bulb with a volume of 244.6 mL at 25°C is 101.94atm.

Learn more about pressure at: brainly.com/question/11464844

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3 years ago
What is so unique about water that hydrogen bonding becomes possible​
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Answer:

Water molecules are polar, so they form hydrogen bonds. This gives water unique properties, such as a relatively high boiling point, high specific heat, cohesion, adhesion and density.

<u>EXPLANATION</u> :

<em>So it is unusual for water to be a liquid at room temperature! Water is liquid at room temperature so it's able to move around quicker than it is as solid, enabling the molecules to form fewer hydrogen bonds resulting in the molecules being packed more closely together.</em>

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What is the difference between a nucleic acid and a nucleotide?.
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Nucleic Acid is a complex organic substance present in living cells, especially DNA or RNA whose molecules consist of many nucleotides linked in a long chain.

Nucleotide is a compound consisting of a nucleoside linked to a phosphate group. They form the basic structural unit of nucleic acids such as DNA.

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