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3 years ago

How can you test the complete separation of camphor and sand

Chemistry

2 answers:

Tcecarenko [31]3 years ago

8 0

Answer:

We know that camphor is a sublime substance and sand is not a sublime substance. Thus we can separate camphor from sand by heating the mixture slowly. The vapours of camphor should be then collected and cooled down. We would observe that solid camphor crystals will form.

Explanation:

katrin2010 [14]3 years ago

6 0

Answer: Use own words

What method can be used to separate iron filings and sand?

Iron is magnetic and the other two not, which means a magnet could be used to attract the iron filings out of the mixture, leaving the salt and sand. Salt is water soluble, while sand is not. This means the two can be mixed in water and stirred. The salt will dissolve and the sand will not.

other words

How will you separate Camphor common salt and sand?

Camphor can be separated using sublimation as it is a sublime,common salt and sand mixture can be separated using evaporation and filtration respectively. Principle : Throught sublimation we will get camphor, through decantation sand and then through evaporation salt.

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Covalent bonds can occur where atoms share one or more pairs of electrons. Which of the following would form a double covalent b

mojhsa [17]

Answer:

The answer to your question is: CO2

Explanation:

The information given is correct, Covalent bonds occur when atoms share one or more pairs of electrons, but also, covalent bonds occur with nonmetals, then,

a.NaCl This elements form an ionic bond, so this option is incorrect.

b.Cl2 Here there are two non metals but the form one single covalent bond, so this option is incorrect.

c.CO2 Carbon dioxide forms 2 double covalent bonds.

d.NH3 ammonium only forms single covalent bonds

6 0

3 years ago

An atom has a mass number of 22 and an atomic number of 12. How many neutrons does it have?

tia_tia [17]

Answer:

this isn't correct answer but the equation is correct by using this methid you can got your answer .

Explanation:

Given - Mass number of atom = 23

Atomic number of atom = 11

As, no. of electrons in an atom is equal to an atomic number of the element.

So, number of electrons = 11

Secondly , number of protons are equal to number of electrons.

so, number of protons = 11

And number of neutrons = mass number - atomic number = 23−11 = 12

so, number of neutrons = 12

So , the atom contains 11 protons, 11 electrons, 12 neutrons.

4 0

3 years ago

2. List the layers of Earth from the center out to the crust. What is the composition of each layer?

Naily [24]

Inner core: Iron and nickel
Outer core: Molten iron and nickel
Mantle: Magnesium and iron
Crust: Silicon, magnesium, iron, aluminium, oxygen, etc.

6 0

3 years ago

A 9.000L tank at 27.0°C is filled with 5.29g of sulfur tetrafluoride gas and 15.6g of carbon dioxide gas. You can assume both ga

Colt1911 [192]

Answer:

Mole fraction SF₄: 0,121

Mole fraction CO₂: 0,879

Partial pressure SF₄: 0,134 atm

Partial pressure CO₂: 0,968 atm

Total pressure: 1,102 atm

Explanation:

The moles of sulfur tetrafluoride gas and carbon dioxide gas are:

5,29g SF₄× $\frac{1mol}{108,07g}$ = 0,0489 moles SF₄

15,6 CO₂× $\frac{1mol}{44,01g}$ = 0,354 moles CO₂

Mole fraction SF₄:

$X_{SF_{4}} = \frac{0,0489mol}{0,0489+0,354}$ = 0,121

Mole fraction CO₂:

$X_{CO_{2}} = \frac{0,354mol}{0,0489+0,354}$ = 0,879

It is possible to obtain partial pressure of both gases with moles of each gas using:

P = nRT/V

Where n are respective moles, R is gas constant (0,082atmL/molK), T is teemperature (27°C=300,15K), V is volume (9,0000L)

Replacing:

Partial pressure SF₄: 0,134atm

Partial pressure CO₂: 0,968atm

Now, the sum of the partial pressures is the total pressure in the tank, that means:

Total pressure: 0,134atm + 0,968atm = 1,102atm

I hope it helps!

6 0

3 years ago

A 23.9g object was submerged into 50.5ml of water. If the water rose to 89.4ml

Naya [18.7K]

I need more points but I think it is 84737

3 0

3 years ago

How can you test the complete separation of camphor and sand​

How can you test the complete separation of camphor and sand