Question

It was important that the flask be completely dry before the unknown liquid was added so that water present would not vaporiz
0 0
Add a comment Improve this question Transcribed image text
Answer #1

drop has 0.05 ml aense density a mass, volume basse density X Volume = 1 g/ml x 0.05 me 18 g of water - Imel 0.05g will be im

Add a comment
Know the answer?
Add Answer to:
It was important that the flask be completely dry before the unknown liquid was added so...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • It was important that the flask be completely dry before the unknown liquid was added so...

    It was important that the flask be completely dry before the unknown liquid was added so that water present would not vaporize when the flask was heated. A typical single drop of liquid water has a volume of approximately 0.05 mL. Assuming the density of liquid water is 1.0 g/mL, how many moles of water is in one drop of liquid water, and what volume would this amount of water occupy when vaporized at 100°C and 1 atm?

  • What is the effect on the calculated density of the unknown metal or liquid under the...

    What is the effect on the calculated density of the unknown metal or liquid under the following conditions? After the flask was filled with unknown liquid the cover slip was placed on top. In doing so a small air bubble was trapped under the cover slip. When determining the density of the unknown metal, the flask was filled less than one quarter way with the metal instead of halfway. When determining the volume of the flask, the student did not...

  • 1. A volatile organic liquid with known molecular weight is added to a vapor density flask which has a known volume. The...

    1. A volatile organic liquid with known molecular weight is added to a vapor density flask which has a known volume. The flask is heated using a boiling water bath until all of the liquid has evaporated. After heating for an additional 1 or 2 minutes, the flask is removed from the boiling water bath, corked, and cooled using a room temperature water bath. Predict the mass of condensed vapor. Temperature of the hot water bath (ºC): 99.5 Volume of...

  • A volatile organic liquid with known molecular weight is added to a vapor density flask which has a known volume. The fl...

    A volatile organic liquid with known molecular weight is added to a vapor density flask which has a known volume. The flask is heated using a boiling water bath until all of the liquid has evaporated. After heating for an additional 1 or 2 minutes, the flask is removed from the boiling water bath, corked, and cooled using a room temperature water bath. Predict the mass of condensed vapor. Temperature of the hot water bath (ºC): 99.4 Volume of the...

  • List t wo reasons why it is necessary to put a pinhole in the aluminum foil...

    List t wo reasons why it is necessary to put a pinhole in the aluminum foil 2. Why was it NOT necessary to clean and dry the flask before performing your second determination? 3. A certain liquid has a molecular weight of 100 g/mole. The following data were obtained for a Dumas molecular weight determination: V-0.265 liters T 372 K and P 1.02 atm g of condensed vapor 0.58 g From this data a molecular weight of 65.5 g/mole was...

  • A laboratory group measures an excess of an unknown liquid. They add this to an empty...

    A laboratory group measures an excess of an unknown liquid. They add this to an empty flask for which they calculate the volume. They heat the sample in a water bath until all liquid has been vaporized for several minutes. the sample is cooled and measured. Use their laboratory data (listed below) to answer the following questions: Calculate the mol of gas in the flask using the ideal gas law: Calculate the molar mass of the unknown: If a student...

  • Molecular Weight of an Unknown Volatile Liquid

    Question Details:A student observes that a 126 mL dry flask with a foil capweighs 50.162g. The student then adds 5 mL of an unknown volatileliquid and heats the flask ina boiling water bath at 99.2C(degrees) until all liquid disappears. The flask, foil, andunknown after heating that is dry and cool weigh 50.610 g.Thebarometric pressure in the laboratory is 743.3 mm Hg; thelaboratory temperature averages 22.3 C(degrees); the vapor pressureof the unknown liquid is 160mmHg at 20 C(degrees), and the densityof...

  • i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...

    i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone) is less than the actual molecular weight (58.08 g/mol). what errors could i have made in my lab that would account for the difference. Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...

  • THE MOLAR MASS OF A VOLATILE LIQUID 1. A foil-covered flask was found to have a...

    THE MOLAR MASS OF A VOLATILE LIQUID 1. A foil-covered flask was found to have a mass of 161.38 have a mass of 167.38 g. A volatile liquid was placed L00.0°C at a barometric pressure of 743.8 mm Hg. The foil-covered inside and heated to 100.0°C at a barometric press flask containing the vapor had a mass the molar mass of this volatile liquid. 's the vapor had a mass of 167.71 g and a volume of 147.0 mL. Calculate...

  • Barometric Pressure 0.992 atm Mass of Flask + Foil 56 g Mass of Flask + Foil...

    Barometric Pressure 0.992 atm Mass of Flask + Foil 56 g Mass of Flask + Foil + Condensed Liquid 59 g Mass of Condensed Liquid 3 g Volume of Flask 300 ml Temperature of Water Bath when Vaporization Begins 333 K Temperature of Water Bath when Water Begins to Boil 363 K Molar Mass 46 g mol Ideal gas law PV=nRT P=pressure      V=volume of gas        n=number of moles     R=gas constant           T=temperature Molar volume V=RT/P Density of gas D=PM x RT Molar mass M=(mRT)/(PV) I...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT