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3 years ago

Differences between evaporation and vaporization

1 answer:

6 0

I BELIEVE THAT VAPORIZATION THAT <span>element or compound is a phase transition from the liquid phase to vapor.

AND

EVAPORATION </span>a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance.

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What is the rule for elements with two<br> letters in the symbol?

Mumz [18]

Answer:

In these two-letter symbols, the first letter is always capitalized and the second is always lowercased.

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3 years ago

Read 2 more answers

Determine the pH of a 0.500 M HNO2 solution. Ka of HNO2 is 4.6 * 10-4.

Lostsunrise [7]

Answer: pH of solution is = 1.82

Explanation:

$HNO_2\rightarrow H^+NO_2^-$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Give c= 0.500 M and $\alpha$ = ?

$K_a=4.6\times 10^{-4}$

Putting in the values we get:

$4.6\times 10^{-4}=\frac{(0.500\times \alpha)^2}{(0.500-0.500\times \alpha)}$

$(\alpha)=0.030$

$[H^+]=c\times \alpha$

$[H^+]=0.500\times 0.030=0.015$

Also $pH=-log[H^+]$

$pH=-log[0.015]=1.82$

Thus pH of a 0.500 M $HNO_2$ solution is 1.82

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3 years ago

An example of a heterogeneous mixture is

zaharov [31]

An example of the mixture is oil and water.

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3 years ago

Please can someone explain the reason Iron has 2 or 3 valence electrons

DochEvi [55]

Answer: The electronic configuration of iron is: Ar3d64s2. the two electrons in the 4s orbital are paired, and two of the electrons in the 3d orbitals are paired leaving four unpaired electrons.

Explanation:

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3 years ago

PLZ HELP IT BEING TIMED!!!!!! PLZ ANSWER!!!!!

Wittaler [7]

Answer:

YIKES. a bit late. Answers include 1, 2, 3

Explanation:

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3 years ago