Determining the same mass of solute
Mass of solvent=134.4 g/mol
The same mass of solute is dissolved in 9.82 g of t-butanol instead of cyclohexane. What is the expected freezing pt. change of this solution?
Now Priced at $5 (50% Discount)
Question: Typically an adult will inhale 2.1 L of air per breath. What mass of ozone is taken into the lungs per breath by an adult breathing air containing 1.57 x 10^-4 micro(ug) grams of ozone per cm^3 of air?
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 25.00 mL of the HCl solution into an Erlenmeyer flask.
A sample of Ringer's solution contains the following concentractions (mEq/L) of cations: Na 147, K 4 and Ca2 4. If CI- is the only anion in the solution, what is the CI- concentration, in milliiequivalents per liter?
The overall Kf for the complex ion Ag(NH3)2+ is 1.7x10^7. Ksp for AgI is 1.5x10-16. What is the molar solubility of AgI in an aqueous NH3 solution (Kb=1.8x10-5) with a pH of 12
Why do you think the enthalpy of activation, H ‡ , for a syn-periplanar elimination is higher than that for an anti-periplanar elimination
What total mass of hydrogen is contained in 4.2 g of solution that is 49 % hydrogen peroxide (H2O2) by mass (the balance being water)?
The value of E for the following reaction is 0.34 V. What will the cell potential be when the [Cu2+] =10 M and the [Cr3+]=1 M? 2Cr(s) + 3 Cd 2+ (aq) --> 2Cr3+ (aq) + 3Cd(s) a)0.31 b) 0.46 c) 0.4 d) 037 e)0.28
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted.
A buffer is composed of 0.400 mol H2PO4^- and 0.400 mol HPO4^2- diluted with water to a volume of 1.00 L. The pH of the buffer is 7.210. How many moles of HCl must be added to decrease the pH to 6.210?
1.5 mol of oxygen are mixed with an unknown amount of nitrogen in a 2.0 L container at a temperature of 26.0C. If the final pressure of the mixture is 20.3 atm, what is the number of moles of nitrogen in the container
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!