Explain important that the flask be completly dry

Assignment Help Chemistry
Reference no: EM13241048

it was important that the flask be completly dry before the unknown liquid was added so that water present would not vaporize when the flask was heated.atypical single drop of liquid water has a volume of approximately 0.05ml. assuming the density liquid water is 1 g /ml,how many moles of water are in one drop of liquid water and what volume would this amount of water occupy when vaporized at 100c and 1atm

Reference no: EM13241048

Questions Cloud

Define rubidium-87 decays by beta decay : Rubidium-87 decays by beta decay with a half-life of 4.9 x 10^10 yr. How many 87Rb atoms are in a moon rock sample that has a rubidium decay rate of 3500 disintegrations per hour
Find the resistance between the ends of the welded bar : Two cylindrical bars, each with diameter of 2.30 cm, are welded together end to end. One of the original bars is copper and is 0.350 m long
Following the Paris peace treaties : Following the Paris peace treaties, all of the following transpired EXCEPT:
Find the average kinetic energy of air : What is the average velocity (Vrms) of 0.75kg of air at room temperature (20°C), What is the average kinetic energy of air at 20°C, using the velocity you just calculated
Explain important that the flask be completly dry : it was important that the flask be completly dry before the unknown liquid was added so that water present would not vaporize when the flask was heated.atypical single drop of liquid water has a volume of approximately 0.05ml
What is the womans avg velocity : As part of an excercise program, a woman walks south at a speed of 2.00 m/s for 60 minutes. She then turns around and walks north a distance of 3000 m in 25.0 minutes
Explain solution gave a precipitate when ammonium oxalate : A solution gave a precipitate when ammonium oxalate was added but gave no precipitate when ammonium sulfate was added. For each Magnesium group ion(Barium, Magnesium, Strontium, and Calcium) tell whether the ion
Describe the concentrations of in the half-cells : A rechargeable battery is constructed based on a concentration cell constructed of two half-cells. The volume of each half-cell is 2.1 and the concentrations of in the half-cells are 1.30 and 1.2×10?3.
Create a graph and draw the regression line : Create a graph and draw the regression line based on these two pairs of scores, plus the X value 1 1  and its predicted score on Y.

Reviews

Write a Review

Chemistry Questions & Answers

  State and construct target electrochemical cell

Describe how you would construct your target electrochemical cell, including the identities and concentrations of all chemical species, as well as a diagram of the setup.

  Explain water cane sugar is a molecular substance

What is the boiling point of a solution that is produced by adding 650 g of cane sugar (molar mass is 342.3 g/mol) to 1.5 kg of water? Cane sugar is a molecular substance.

  Calculate the heat released of white phosphorus burn in air

Calculate the heat released when 1 kg of white phosphorus is allowed to burn in air at a constant pressure of 1 bar.

  What mass of solid sodium formate must be added

what mass of solid sodium formate (of mw 68.01) must be added to 105 ml of 0.55 mol/l formic acid(HCOOH) to make a buffer solution having a ph of 3.96? ka=0.00018 for HCOOH

  State the fission products that causes major concern

What percentage of the Sr-90 that was formed in the detonation of the first fission bombs in August 1945 is still present in the environment in August 2032?

  Explain the value of the equilibrium constant for haber

What is the value of the equilibrium constant for Haber process at 298K if the equilibrium concentration are as follows:

  What are the mass percentages of ne and kr

a sample of gas mixture from a neon sign contains 0.0856 mol ne and 0.0254 mol kr. what are the mass percentages of ne and kr in the gas mixture?

  What would be the new volume for the gas

a gas is placed in a balloon with a volume of 3.0L at 35C and 800 torr. What would be the new volume for the gas if placed under STP

  What is the density of sulfuric acid

a battery has a volume of 1.78l and contains 3.28x10^3 grams of sulfuric acid, what is the density of sulfuric acid in g/ml?

  Define what is the value of acid dissociation constant

solution of an unknown acid has a ph=1.776. What is the value of acid dissociation constant?

  How many liters of co2 (g) are produced

A student combusts 504.96 grams of ethene gas, C2H4. How many liters of CO2 (g) are produced at a pressure of 0.993 atm and a temperature of 295 K? C2H4 (g) + 3 O2 (g)-> 2 CO2 (g) + 2 H2O (g)

  Explain what is the molecular mass of this gas

An unknown gas that occupies 1.00 L at a pressure of 534 torr and a temperature of 295.7 K weighs 0.9847 g. What is the molecular mass of this gas

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