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Butoxors [25]
3 years ago
6

What happens in the distillation flask and condenser during distillation.​

Chemistry
1 answer:
LuckyWell [14K]3 years ago
6 0

Answer: The distillation flask being heated in a heating mantle. The vapors condense and drip from the condenser into the flask. As the distillate begins to drop from the condenser, the temperature observed on the thermometer should be changing steadily.

Explanation:

answer above

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What is the volume of a substance with a mass of 64.9 g/ and a density of 2.1 g/ml?
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It’s 34 I had this question
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An aqueous HCL solution has a proton concentration equal to 6.00 mol/L. The HCL concentration in this solution is ————M.
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Answer:

HCl conc.= 6.0mol/L

Explanation:

From the dissociation of HCl= 1 mole H+ and 1mol Cl-, which is equivalent stoichiometrically in concentration to that of 1 mol HCl,

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The concentration of a certain sodium hydroxide solution was determined by using the solution to titrate a sample of potassium h
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Answer:  

0.022 M

Explanation:

The molarity is the number of mol solute divided by the volume of solution in liters. Since we are told there is only one acidic hydrogen in KHP  the reaction is a 1 to 1 with sodium hydroxide, We then calculate the moles of sodium hydroxide required to react with the  moles of KHP and proceed to calculate the molarity of the NaOH solution:

mol KHP:  0.1082 g  x  1 mol/204.22 g = 0.00053 mol KHP

0.00053 mol KHP x 1 mol Naoh/1 mol KHP = 0.00053 mol NaOH

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note: The volume of sodium hydroxide needed to be converted to liters by definition of molarity.

4 0
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4) How many grams are there in 7.40 moles of AgNO3
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Answer:

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3 0
3 years ago
A sample of 40.0 mL of hydrogen is collected by water displacement at a temperature of 20 degrees Celcius. The barometer reads 7
Roman55 [17]

Answer : The volume of the hydrogen at STP is, 36.8 mL

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 751 torr

P_2 = final pressure of gas at STP = 760 torr

V_1 = initial volume of gas = 40.0 mL

V_2 = final volume of gas at STP = ?

T_1 = initial temperature of gas = 20^oC=273+20=293K

T_2 = final temperature of gas at STP = 0^oC=273+0=273K

Now put all the given values in the above equation, we get:

\frac{751torr\times 40.0mL}{293K}=\frac{760torr\times V_2}{273K}

V_2=36.8mL

Therefore, the volume of the hydrogen at STP is, 36.8 mL

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3 years ago
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