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jeka57 [31]
3 years ago
10

Denver wonders if adding salt to water will make it boil at a lower temperature. What should he do next in order to follow the s

teps of inquiry?
Chemistry
2 answers:
Oksi-84 [34.3K]3 years ago
7 0

Answer:

Impurities decrease the boiling point of a liquid, hence the boiling point of the salt solution will be less than that of pure water.

Explanation:

If Denver wants to know if adding salt to water will reduce the boiling point of water, Denver needs to set up the apparatus for the inquiry as follows;

A boiling tube

A Bunsen burner with wire gauze

A thermometer

A test tube holder

The thermometer is placed inside the boiling tube while the salt solution his allowed to boil. The boiling point is observed using the thermometer. Impurities decrease the boiling point of a liquid, hence the boiling point of the salt solution will be less than that of pure water.

SVETLANKA909090 [29]3 years ago
6 0

In order to follow the steps of inquiry Denver should add some salt to water taken in vessel and heat it. Once the water comes to a boil, Denver should insert a thermometer into the boiling water and measure the temperature of it. Pure water boils at 100°C. Denver will have to note if the salt water boils at a higher or lower temperature than 100°C.

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Paraphin [41]

Given :

Mass of O₂, m = 25.43 g.

To Find :

How many liters of gas will you have at STP.

Solution :

Molecular mass of O₂, M.M = 2 × 16 gram/mole

M.M = 32 gram/mole

Number of moles is given by :

n = m/M.M

n = 25.43/32 mole

n = 0.79 mole

Hence, this is the required solution.

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3 years ago
Before entering the cyclotron, the particles are accelerated by a potential difference V. Find the speed v with which the partic
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Answer:

Speed, v=\sqrt{\dfrac{2qV}{m}}

Explanation:

The device which is used to accelerate charged particles to higher energies is called a cyclotron. It is based on the principle that the particle when placed in a magnetic field will possess a magnetic force. Just because of this Lorentz force it moves in a circular path.  

Let m, q and V are the mass, charge and potential difference at which the particle is accelerated.

The work done by the particles is equal to the kinetic energy stored in it such that,

qV=\dfrac{1}{2}mv^2

v is the speed with which the particles enter the cyclotron

So,

v=\sqrt{\dfrac{2qV}{m}}

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CNC NaCl HCL are all classified as
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What is the percent composition of aluminum in the ore bauxite (AI2O3)?
Schach [20]

Answer:

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This compound is also known as Aluminium Oxide.

Convert grams Al2O3 to moles or moles Al2O3 to grams

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Percent composition by element

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