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Orlov [11]
3 years ago
13

Coal and Diamond are two different form of carbon. which is denser?​

Chemistry
2 answers:
GalinKa [24]3 years ago
7 0

Answer:

diamond is denser because it is more tightly packed than coal

Ivenika [448]3 years ago
6 0

Answer:

Diamond

Explanation:

A diamond have a density of 3.51 g

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Which term is used to describe all the habitats around the world?
OlgaM077 [116]

Answer:

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5 0
2 years ago
What type of energy is stored in the earths crust and produces earthquakes when It is released
mylen [45]
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3 0
3 years ago
In an aqueous solution of a certain acid the acid is 4.4% dissociated and the pH is 3.03. Calculate the acid dissociation consta
NeX [460]

Answer:

4.1x10⁻⁵

Explanation:

The dissociation of an acid is a reversible reaction, and, because of that, it has an equilibrium constant, Ka. For a generic acid (HA), the dissociation happens by:

HA ⇄ H⁺ + A⁻

So, if x moles of the acid dissociates, x moles of H⁺ and x moles of A⁻ is formed. the percent of dissociation of the acid is:

% = (dissociated/total)*100%

4.4% = (x/[HA])*100%

But x = [A⁻], so:

[A⁻]/[HA] = 0.044

The pH of the acid can be calcualted by the Handersson-Halsebach equation:

pH = pKa + log[A⁻]/[HA]

3.03 = pKa + log 0.044

pKa = 3.03 - log 0.044

pKa = 4.39

pKa = -logKa

logKa = -pKa

Ka = 10^{-pKa}

Ka = 10^{-4.39}

Ka = 4.1x10⁻⁵

4 0
3 years ago
The octet rule states that all atoms would like to have 8 electrons in their last shell with no exceptions! true or false
Montano1993 [528]
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