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1 year ago

Two significance of melting point

Chemistry

1 answer:

eimsori [14]1 year ago

5 0

The significance of melting points are

it gives us a idea about inter molecular force which binds the particles together.

at melting point the solid and liquid states exist in equilibrium.

<h3>What is melting point?</h3>

The melting point is the temperature at which a given substance change its physical state from solid to liquid. At this point solids and liquids exist at equilibrium. Melting point of a substance depends on pressure. The melting point of ice increases when pressure decreases. Melting point of a substance decreases by the presence of impurities in it. so you increase or decrease the melting point on any substance by adding more impurities. Ionic bonds, shape and size of molecules are some other factors that affect the melting point.

To learn more about melting point refer:

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What is the mass of 8.8 x 10^22 of magnesium

Romashka-Z-Leto [24]

Answer:

0.05

moles

Explanation:

In a mole of any substance, there exist

6.02⋅1023

units of that substance.

So here, we got:

3.01⋅1022Mg atoms⋅1mol6.02⋅1023M gatoms=0.05mol

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2 years ago

Will mark brainliest, please help ASAP!

Anon25 [30]

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1 year ago

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2 years ago

!!!Need answer for chem homework ASAP PLS !!!!

stealth61 [152]

Answer:

The answer to your question is: kc = 6.48

Explanation:

Data

Given Molecular weight

CaO = 44.6 g 56 g

CO₂ = 26 g 44 g

CaCO₃ = 42.3 g 100 g

Find moles

CaO 56 g ---------------- 1 mol

44.6 g -------------- x

x = (44.6 x 1) / 56 = 0.8 mol

CO₂ 44 g ----------------- 1 mol

26 g ---------------- x

x = (26 x 1 ) / 44 = 0.6 moles

CaCO₃ 100 g --------------- 1 mol

42.3g -------------- x

x = (42.3 x 1) / 100 = 0.423 moles

Concentrations

CaO = 0.8 / 6.5 = 0.12 M

CO₂ = 0.6 / 6.5 = 0.09 M

CaCO₃ = 0.423 / 6.5 = 0.07 M

Equilibrium constant = $\frac{[products]}{[reactants]}$

Kc = [0.07] / [[0.12][0.09]

Kc = 0.07 / 0.0108

kc = 6.48

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2 years ago