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IrinaK [193]
2 years ago
14

Define melting, evaporation, freezing, sublimation and condensation.

Chemistry
1 answer:
ohaa [14]2 years ago
7 0

Answer:

Melting- The process by which a substance changes from its solid state to its liquid state.

evaporation- turning liquid into vapor.

Freezing- The process by which a substance changes from its liquid state into its solid state.

condensation- water which collects as droplets on a cold surface when humid air is in contact with it

sublimation- a solid deposit of a substance which has sublimed.

Explanation:

You might be interested in
Calculate the number of Cl atoms that are in 1.1 x 10^-21 moles of Cl atoms.
Margarita [4]

According to Avogadro's number there are 62.53 atoms of chlorine in 1.1x 10^-21 moles of Cl atoms.

<h3>What is Avogadro's number?</h3>

Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.

According to the definitions, Avogadro's number depend on determined value of mass of one atom of those elements.It bridges the gap between macroscopic and microscopic world by relating amount of substance with number of particles.

Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number or number of moles×Avogadro's number.

ON substitution in above formula number of atoms=1.1×10²¹×6.023×10²³=62.53 atoms

Thus, there are 62.53 chlorine  atoms in 1.1x 10^-21 moles of Cl atoms.

Learn more about Avogadro's number,here:

brainly.com/question/11907018

#SPJ1

6 0
1 year ago
Heat from the sun travels to the Earth _____. in low frequency waves through the movement of molecules in high frequency waves b
raketka [301]
Radiation

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5 0
4 years ago
How many mL of a 6 M NaOH stock solution is needed in order to prepare 500 mL of a 0.2 M NaOH solution?
WITCHER [35]

Answer:

The right answer is "16.67 mL".

Explanation:

Given:

Molarity of NaOH,

M_1=6 \ M

M_2=0.2 \ M

Volume of NaOH,

V_1=V \ mL

V_2=500 \ mL

As we know, the equation,

⇒ M_1V_1=M_2V_2

On putting the values, we get

⇒ 6\times V=0.2\times 500

⇒ 6\times V=100

⇒        V=\frac{100}{6}

⇒            =16.67 \ mL      

3 0
3 years ago
what property of the noble gases most likely prevented the gases from being readily/easily discovered?
Vlad [161]

These gases very rarely react, with others and also noble gases are odourless and colourless.

Explanation:

  • Noble gases will not react with anything so that is the reason why they are known as an inert gas.
  • Noble gases are present in group 18 on the periodic table and following the rule of the octet which is they completed their orbital by s2p6 which is the highest energy level.
  • Most elements are discovering through their reactivity with the other elements, commonly with oxygen. In the case of a noble gas, it is difficult for a scientist to work with the gases which have very less or no chemical property in terms of their reactivity.

7 0
3 years ago
Please help me find the potential energy and explain​
Kaylis [27]

Answer:

PE ( Potential Energy ) = Mass x Gravity x Height

Explanation:

For the first one you would do.

.28 ( mass) x 9.8 ( constant of gravity ) x .40m ( height )

So just multiply your Mass, Gravity and Height together and you will get Potential Energy

Gravity is always 9.8 m/s

8 0
3 years ago
Read 2 more answers
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