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vovangra [49]
3 years ago
13

Which of the following pH values indicates the highest concentration of hydronium ions in a solution?

Chemistry
1 answer:
frez [133]3 years ago
4 0
Hydronium ions are H30+, and pH = -log10[H+] 

<span>As H+ ions in solution exist as H3O+ ions, the lower the pH, the higher the concentration of H30+</span>
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A chemist measures the amount of iodine solid produced during an experiment. He finds that of iodine solid is produced. Calculat
Dimas [21]

The question is incomplete, the complete question is:

A chemist measures the amount of iodine solid produced during an experiment. He finds that 8.31 g of iodine solid is produced. Calculate the number of moles of iodine solid produced. Round your answer to the correct number of significant digits.

<u>Answer: </u>The number of moles of solid iodine produced is 0.0327 moles

<u>Explanation:</u>

The number of moles is defined as the ratio of the mass of a substance to its molar mass.  The equation used is:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}} ......(1)

Given mass of solid iodine = 8.31 g

Molar mass of solid iodine = 253.8089 g/mol

Plugging values in equation 1:

\text{Moles of solid iodine}=\frac{8.31g}{253.8089g/mol}=0.0327mol

Hence, the number of moles of solid iodine produced is 0.0327 moles

8 0
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3 0
3 years ago
At 45 C the volume of a certain gas is 27.5 L
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Regretfully, I do not know what is asked of the problem because it is not stated above. However, it is easier to answer any question pertaining to the temperature, volume, and pressure of gases by assuming that they behave ideally. With this, we'll be able to use the ideal gas law which is mathematically expressed as,
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Explanation:

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Answer:

Physical Changes:

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Let's say you start a fire using wood that you got from this rainforest. Since the act of burning something is a chemical change, this would apply.

Let's also say you forget a banana peel there. After a while, it would start to rot. And since rotting is a chemical change, this would apply as well.

Explanation:

Hope this helps!

8 0
3 years ago
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