Molecular mass by freezing point depression preliminary lab

Assignment Help Chemistry
Reference no: EM13385958

Molecular Mass by Freezing point Depression (Preliminary Lab)

The following errors occurred when the above experiment was carried out. How would each affect the calculated molecular mass of the solute (too high,too low, no effect)? Explain your answer.

(a) The thermometer uses actually read 1.4C too high.

(b) Some of the solvent was spilled before the solute was added.

(c) Some of the solute was spilled after it was weighed and before it was added to the solvent.

(d) Some of the solution was spilled after the solute and solvent were mixed but before the freezing point was determined.

Reference no: EM13385958

Questions Cloud

What mass of carbon dioxide in kg is produced upon the : what mass of carbon dioxide in kg is produced upon the complete combustion of 18.9l of propane approximate contents of
Calculate the molecular weight of an unknown substance if : calculate the molecular weight of an unknown substance if 0.2064 g of solid was added to 25.00 ml of cyclohexane and
Calculate the ph after 0020 mol hcl is added to 100 l of : calculate the ph after 0.020 mol hcl is added to 1.00 l of each of the four solutions.a 0.100 m honh2 kb 1.1
Briefly describe a corporate merger that you have read : briefly describe a corporate merger that you have read about recently or been part of as an employee. what kind of a
Molecular mass by freezing point depression preliminary lab : molecular mass by freezing point depression preliminary labthe following errors occurred when the above experiment was
A volume of 950ml of h2o is initially at room temperature : a volume of 95.0ml of h2o is initially at room temperature 22.0 c. a chilled steel rod at 2.00 c.is placed in the
Hydrogen and oxygen gas combine explosively to produce : hydrogen and oxygen gas combine explosively to produce water. write a balanced chemical equation for this process. if
What is the molarity of cl- ions in a solution formed by : a mixture contains 76.5 nacl 6.5 mgcl2 and 17.0 na2so4 by mass.what is the molarity of cl- ions in a solution formed
How many ml of a 0136 m aqueous solution of aluminum : how many ml of a 0.136 m aqueous solution of aluminum bromide albr3 must be taken to obtain 17.3 grams of the

Reviews

Write a Review

Chemistry Questions & Answers

  How many liters of hydrogen gas were made

he generated the hydrogen gas needed to lift the balloon by mixing a large amount of iron with aqueous sulfuric acid. if he used 1000 lbs. of iron and excess sulfuric acid, how many liters of hydrogen gas were made?

  Initial concentration of nitrogen dioxide

How long will it take for 75% of nitrogen dioxide to decompose if the initial concentration of nitrogen dioxide is 1.33M

  State a balance equation for the reaction of nitric acid

Write a balance equation for the reaction of nitric acid (HNO3) with each base solution : [1]. NaHCO3, [2]. MgCO3. ( Please include the phases of the substance)

  In aqueous solution acetic acid as represented above in

hc2h3o2aq h20l ltgt h3oaq c2h3o2 aqin aqueous solution acetic acid as represented above. in 0.0105m hc2h3o2 aq at 25c

  Explain the fat cell contains three copies of the protein

A spherical fat cell has a diameter of 2.47 micrometers. The fat cell contains three copies of the protein azurin. What is the molar concentration of azurin within the fat cell

  State a phenolphthalein end point

A buret containing NaOH solution has an initial reading of 0.14ml. 25.00ml of 0.1000M HCl is titrated to a phenolphthalein end point,

  Depict the electron-dot formula for molecules

Draw the electron-dot formula for each of the following molecules or ions: a) HCCH (ethyne); b) CS2 (C is the central atom); c) NO^+

  What is the molar concentration

Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. What is the molar concentration of these ions in water at 25oC.

  The oxidation-reduction happens in any electrochemical cell

In an electrolysis cell similar to the one employed in this experiment, a student observed the unknown metal anode lost .206g while a total volume of 84.90mL of H2 was being produced. The temperature in the lab was 230C and the barometric pressure..

  A student mixed 500 ml of a nickel2 chloride solution with

a student mixed 5.00 ml of a nickel2 chloride solution with 5.00 ml of .100m sodium phosphate and a precipitate formed.

  What assumption is necessary in order to do calculations

The expresssion for the freezing point depression of a solution relative to that of the pure solute is shown above. From solutions of known concentrations of p-dichlorobenzene in cyclohexane, you determine Kf, the freezing point depression constan..

  A solution of 624 g of insulin in enough water to make 1000

a solution of 62.4 g of insulin in enough water to make 1.000 l of solution has an osmotic pressure of 0.305 atm at

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd