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3 years ago

Describe how a mixture of iron filings,sand and iodine can be separated

Chemistry

1 answer:

Snezhnost [94]3 years ago

4 0

Answer:

In the mixture of table salt, sand, solid iodine and iron fillings, iron filings is the only solid that is magnetic. Hence, it can be separated using a magnet. When a magnet is moved through the mixture, iron fillings get attracted to the magnet out of the mixture, leaving the salt, iodine and sand.

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An insoluble solid that forms from a chemical reaction is called a(n) _____.

serious [3.7K]

I believe that an insoluble solid that forms a chemical reaction is called a precipitate.
Precipitate is an insoluble solid that forms when two ionic compounds in solution are combined. Which means precipitation reaction is the creation of a solid from a solution, and when the reaction occurs in a liquid solution, the solid formed is called the precipitate. In fact the only method of forming insoluble salts is called precipitation or double decomposition of salts.

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3 years ago

Calculate the moles of calcium oxalate formed from 5 grams of potassium oxalate (molar mass 184.24 g/mol) the mole mole ratio fr

Nataly_w [17]

5 g of potassium oxalate react to produce 0.03 moles of calcium oxalate.

Calcium oxalate (CaC₂O₄) is obtained by the reaction of 5 g of potassium oxalate (K₂C₂O₄).

We can calculate the moles of CaC₂O₄ obtained considering the following relationships.

The molar mass of K₂C₂O₄ is 184.24 g/mol.
The mole ratio of K₂C₂O₄ to CaC₂O₄ is 2:1.

$5 g K_2C_2O_4 \times \frac{1molK_2C_2O_4}{184.24gK_2C_2O_4} \times \frac{1molCaC_2O_4}{2molK_2C_2O_4} = 0.03molCaC_2O_4$

5 g of potassium oxalate react to produce 0.03 moles of calcium oxalate.

Learn more: brainly.com/question/15288923

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3 years ago

Which of these is an example of a physical change?

Luda [366]

The answer is D) wood decaying

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4 years ago

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Find the mass of 3.00 mol of acetic acid, C2H4O2

Alinara [238K]

Molar mass acetic acid:

C₂H₄O₂ = 12 * 2 + 1 * 4 + 16 * 2 = 60.

n = mass / molar mass

3.00 = m / 60.0

m = 3.00 * 60.0

m = 180 g of <span>C₂H₄O₂

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3 years ago

Jamal was riding his bike home at a speed of 12 mph. On his trip out, he had traveled 8 miles away from his house. He has been t

NikAS [45]

Jamal is 2 miles away from his home.

Option B.

<h3><u>Explanation:</u></h3>

The initial distance of Jamal from his home is 8 miles. He needs to return home from his trip.

The speed that Jamal kept was constant for 30minutes and he drove at a speed for 12 miles per hour.

Speed of Jamal = 12 mph.

Time of travel = 30minutes =0.5 hours.

So distance traveled by Jamal = $12 \times0.5$ miles. = 6miles.

Initial distance of Jamal = 8 miles.

So final distance = $8-6$ miles = 2miles.

So Jamal is 2 miles away from his home.

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3 years ago

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Describe how a mixture of iron filings,sand and iodine can be separated​

Describe how a mixture of iron filings,sand and iodine can be separated