What is the molality of a solution prepared

Assignment Help Chemistry
Reference no: EM13162376

What is the molality of a solution prepared by dissolving 413 mg of KBr in 6.45 mL of water at 25.0 0C. The density of water at 25.0 0C is 0.997 g/mL.

Reference no: EM13162376

Questions Cloud

How many photons are required to heat coffee : Suppose that the microwave radiation has a wavelength of 13.2 cm. How many photons are required to heat 200. mL of coffee from 23°C to 62°C?
The right-hand side of this equation be written in vba : How would the right-hand side of this equation be written in VBA?
What is the mass of a cube of lead : The mass of a cube of iron is 392 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Marginal cost of the merged firm : If the merged firm were able to exploit economies of scale it would affect costs, may be even marginal costs. Assume the marginal cost of the merged firm was not 40, but 30. Is the merger profitable in this case?
What is the molality of a solution prepared : What is the molality of a solution prepared by dissolving 413 mg of KBr in 6.45 mL of water at 25.0 0C. The density of water at 25.0 0C is 0.997 g/mL.
How many moles of carbon dioxide will be formed : how many moles of carbon dioxide will be formed upon the complete reaction of 0.793 moles carbon monoxide with excess water?
What are the advantages of that method and disadvantages : a company has two building that are 50 meters (roughly 50 yards) apart. Between the building is private land owned by the company. A large walk-through tunnel connects the two buildings.
Air-traffic controller : In his first week as an air-traffic controller, Harley is already complaining of headaches and fatigue. Harley's symptoms are characteristic of which stage of the general adaptation syndrome?
Cumulative changes that reflect the cost to the body : Cumulative changes that reflect the cost to the body for adapting to stressful demands is called

Reviews

Write a Review

Chemistry Questions & Answers

  How much of the reactant will remain after 3 hrs

a first order reaction has a rate constant 0.00510.if we begin with 0.10 M concentration of the reactant , how much of the reactant will remain after 3 hrs?

  What will the final temperature be

if 836.8 Joules are added to 25 grams ammonia at 37 degrees Celsius, what will the final temperature be?

  What is the molar mass of the sugar

A certain type of sugar dissolves in water, but the solution created does not conduct electricity. Therefore, the sugar does not form ions when dissolved in solution.

  What is the ph of the solution

What is the pH of the solution obtained when 135 mL of 0.618 M NaOH is diluted to 16.0 L with water?

  State the relative concentrations of hmr

Suppose that a student collects the following spectrophotometric data to determine the relative concentrations of HMR and MR in solution:

  What is the molarity of cuso4 in the second solution

A chemist dissolves 0.099 g of CuSO4 · 5 H2O in water and dilutes the solution to the mark in a 500-mL volumetric flask. A 36.1-mL sample of this solution

  Depict a three-dimensional structure

Draw a three-dimensional structure of CH3CL. Include all non-bonding pairs in your drawing. Shoe the direction of the molecular dipole and indicate bond angles.

  How many grams of oxygen are required

Octane has a density of 0.692 g/mL at 20 C . How many grams of O2 are required to burn 19.0 gal of C8H18.

  Determine the equilibrium concentration of h2s

A reaction mixture initially contains 2.8M H2O and 2.6 M SO2. Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 x 10^-6 ?

  How much acetone (ch3coch3) would be needed

how much acetone (CH3COCH3) would be needed to obtain 3.35 moles of acetone? the desnity of acetone is 0.851 g/mL.

  What is the equilibrium concentration of h2s(g)

Kc = 9.7 at 900 K for the reaction NH3(g) + H2S(g) --> NH4HS(s) If the initial concentrations of NH3(g) and H2S(g) are 2.0 M, what is the equilibrium concentration of H2S(g)?

  What the new pressure will be

A tire has a pressure of 780 mmHg at 27°C. If the tire is heated to 47°C on hot pavement, what the new pressure will be:

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