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mojhsa [17]
2 years ago
9

Use the solubility graph to answer the following questions.

Chemistry
1 answer:
Akimi4 [234]2 years ago
4 0

The required amount of KClO₃ to prepare a saturated solution is 48 grams.

<h3>What is solubility?</h3>

The ability of a material, the solute, to create a solution with another substance, the solvent, is known as solubility.

Given graph is plotted between the temperature and solubility of the substance at 100g of water, so for the given points calculation will be:

  • According to the graph for the KClO₃ we require almost 48g of KClO₃ to prepare a saturated solution.
  • From the graph it is clear that at 40°C 40g of KCl will dissolve in 100g of water then amount of KCl which will dissolve in 68g of water will be calculated as:

x = (40)(68) / (100) = 27.2g

  • On the basis of the graph, if 75 grams of calcium chloride is added to 100 g of water at 25°C then the obtained solution is the unsaturated as they have les solute then the limit.
  • Based on the graph cerium sulfate behaves like a precipitate which will not dissolve at any temperature and present in the physical state.
  • We can add more 30g to make the KCl solution saturated.

Hence, we require almost 48g of KClO₃ to prepare a saturated solution of KClO₃.

To know more about solubility, visit the below link:

brainly.com/question/16903071

#SPJ1

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aqueous hydrochloric acid HCl will react with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid wat
aleksandr82 [10.1K]

Answer:

Explanation:

HCl    + NaOH     =    NaCl    +     H₂O.

1 mole   1 mole           1 mole          1 mole

6.93  g of hydrochloric acid = 6.93 / 36.5 = .189 mole of HCl

2.4 g of NaOH = 2.4 / 40 =  .06 mole of NaOH

NaOH is in short supply so it is the limiting reagent .

1  mole of NaOH reacts with 1 mole of HCl to give 1 mole of Water

.06 mole of NaOH will react with .06 mole of HCl to give .06 mole of water

Water formed = .06 mole

= .06 x 18 = 1.08 g

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A helium-filled balloon contains 125 mL of gas at a pressure of 0.974 atm. What volume will the gas occupy at standard pressure?
Jobisdone [24]

121.75 is really really really really really the right answer... For real

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3 years ago
A boy with pneumonia has lungs with a volume of 1.7 L that fill with 0.070 mol of air when he inhales. When he exhales, his lung
BlackZzzverrR [31]

Answer:

0.053moles

Explanation:

Hello,

To calculate the number of moles of gas remaining in his after he exhale, we'll have to use Avogadro's law which states that the volume of a given mass of gas is directly proportional to its number of moles provided that temperature and pressure are kept constant. Mathematically,

V = kN, k = V / N

V1 / N1 = V2 / N2= V3 / N3 = Vx / Nx

V1 = 1.7L

N1 = 0.070mol

V2 = 1.3L

N2 = ?

From the above equation,

V1 / N1 = V2 / N2

Make N2 the subject of formula

N2 = (N1 × V2) / V1

N2 = (0.07 × 1.3) / 1.7

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The number of moles of gas in his lungs when he exhale is 0.053 moles

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3 years ago
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