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3 years ago

Besides using some measure of science, alchemists resorted to using _________ to do what science seemed unable to accomplish

Chemistry

2 answers:

Sergio [31]3 years ago

7 0

The correct answer to this open question is the following.

Besides using some measure of science, alchemists resorted to using magic to do what science seemed unable to accomplish.

One of the ancient practices of old magicians is alchemy. Although the concept brings ideas of mystery and old people with white beards wearing funny clothes, we can define Alchemy as the process to turn lead into gold. That's it. Since the Middle Ages, alchemists tried to combine science with magic in order to covert lead to gold. And all kind of stories has stemmed from these people.

WARRIOR [948]3 years ago

6 0

Alchemists used science together with magic to accomplish tasks.

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When nitrogen dioxide gas dissolves in water, an aqueous solution containing dissolved nitric acid and nitrogen monoxide forms.

xeze [42]

Answer:

1. Based on the given question, 138.03 grams of NO₂ is reacting completely with 18.02 grams of H2O. However, in case when 359 grams of NO₂ is used then the grams of water consumed in the reaction will be,

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2. As mentioned in the given case 138.03 grams of NO₂ generates 126.04 grams of HNO₃. Therefore, 359 grams of NO₂ will produce,

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3 years ago

4. The solubility of acetanilide in hot water is 5.5 g / 100 mL at 100oC and its solubility in cold water is 0.53 g / 100 mL at

Triss [41]

Answer:

89,4%

Explanation:

If you have a solutio of 2,5g of acetanilide in 50mL of water and you warm this solution to 100°C you will dissolve all acetanilide because the maximum solubility in 50mL will be:

5,5g / 100mL → 2,75g / 50mL.

Then, if you cold the water to 0°C the solubility in 50mL will be:

0,53g / 100mL → 0,265g / 50mL.

That means you will precipitate:

2,5g - 0,265g = 2,235g of acetanilide

The theoretical percent recovery will be:

2,2365g / 2,5g ×100 = 89,4%

I hope it helps!

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aliina [53]

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