A chemistry student needs of -methyl--pentanone for an experiment. He has available of a w/w solution of -methyl--pentanone in d
1 answer:
The question is incomplete, here is the complete question:
A chemistry student needs of 60.0 g of 4-methyl-2-pentanone for an experiment. He has available 350. g of a 14.0 % w/w solution of 4-methyl-2-pentanone in diethyl ether. Calculate the mass of solution the student should use. If there's not enough solution, press "No solution" button
<u>Answer:</u> There is not enough solution.
<u>Explanation:</u>
We are given:
Mass of 4-methyl-2-pentanone needed = 60.0 gram
14 % w/w 4-methyl-2-pentanone solution
This means that 14 grams of 4-methyl-2-pentanone is present in 100 grams of solution
Applying unitary method:
If 14 grams of 4-methyl-2-pentanone is present in 100 grams of solution
So, 60 grams of 4-methyl-2-pentanone will be present in =
As, the given amount of solution is less than the calculated amount.
Hence, there is not enough solution.
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Hello!
To solve this question, we need to use the Avogadro's Number, which is a constant first discovered by Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are 6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:
So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent 14,12 moles of Na₂SO₃
Have a nice day!
To solve this question, we need to use the Avogadro's Number, which is a constant first discovered by Amadeo Avogadro, an Italian scientist. He discovered that in a mole of a substance, there are 6,02*10²³ molecules. Using this relationship, we apply the following conversion factor:
So, 8,50 * 10²⁴ molecules of Na₂SO₃ represent 14,12 moles of Na₂SO₃
Have a nice day!