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Sati [7]
2 years ago
13

The pressure on 20 mL of a gas at constant temperature is changed from 4.0 atm to 2.0 atm. What is the new volume?

Chemistry
1 answer:
LekaFEV [45]2 years ago
3 0

Answer:

40 ml

Explanation:

boyles law

Pi Vi = PƒVƒ

4 * 20 = 2 * Vƒ

40 ml = Vƒ

brainly.com/question/13802011

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What volume of oxygen at STP will be produced if the following reaction absorbed 275 kJ of heat?
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If a saturated solution of potassium chloride is cooled from 80℃ to 50℃,how much precipate is formed
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Acetylene is the substance burned in oxy-acetylene torches. Write a balanced equation for the complete oxidation reaction that o
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Explanation:

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4 0
2 years ago
3. In a typical titration experiment a student titrates a 5.00 mL sample of formic acid (HCOOH), a monoprotic organic acid, with
ira [324]

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2.893 x 10⁻³ mol NaOH

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Explanation:

The balanced reaction equation is:

HCOOH + NaOH ⇒ NaHCOO + H₂O

At the endpoint in the titration, the amount of base added is just enough to react with all the formic acid present. So first we will calculate the moles of base added and use the molar ratio from the reaction equation to find the moles of formic acid that must have been present. Then we can find the concentration of formic acid.

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Extra significant figures are kept to avoid round-off errors.

Now we relate the amount of NaOH to the amount of HCOOH through the molar ratio of 1:1.

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The question also asks to calculate the moles of base, so we convert millimoles to moles:

(2.892992 mmol NaOH)(1 mol/1000 mmol) = 2.893 x 10⁻³ mol NaOH

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