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Musya8 [376]
3 years ago
12

The process by which water vapor changes to liquid water is called

Chemistry
2 answers:
Vaselesa [24]3 years ago
8 0
Your answer is C.........
Vlada [557]3 years ago
5 0
c. condensation is your answer.
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2 years ago
Calculate the moles of solute dissolved in 4.2 dm3 of a 0.5 mol / dm3 solution.
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Answer:

Example

0.5 mol of sodium hydroxide is dissolved in 2 dm3 of water. Calculate the concentration of the sodium hydroxide solution formed.

Concentration =

Concentration = 0.25 mol/dm3

Volume units

Volumes used in concentration calculations must be in dm3, not in cm3. It is useful to know that 1 dm3 = 1000 cm3. This means:

divide by 1000 to convert from cm3 to dm3

multiply by 1000 to convert from dm3 to cm3

For example, 250 cm3 is 0.25 dm3 (250 ÷ 1000). It is often easiest to convert from cm3 to dm3 before continuing with a concentration calculation.

Question

100 cm3 of dilute hydrochloric acid contains 0.02 mol of dissolved hydrogen chloride. Calculate the concentration of the acid in mol/dm3.

Reveal answer

Converting between units

The relative formula mass of the solute is used to convert between mol/dm3 and g/dm3:

to convert from mol/dm3 to g/dm3, multiply by the relative formula mass

to convert from g/dm3 to mol/dm3, divide by the relative formula mass

Remember: the molar mass is the Ar or Mr in grams per mol.

Example

Calculate the concentration of 0.1 mol/dm3 sodium hydroxide solution in g/dm3. (Mr of NaOH = 40)

Concentration = 0.1 × 40

= 4 g/dm3

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3 years ago
Scientific Notation - PLEASE HELP!
zmey [24]

Answer:

0.0931 is the ans i think

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Select the compound in which chlorine is assigned the oxidation number +5.
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The answer is d.
Hope this helps plz give brainliest!
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