Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
1. Formic acid, HFor, has a Ka value equal to about 1.8 X 10^-4. A student is asked to prepare a buffer having a pH of 3.40 from a 0.10 M HFor and a 0.10 M NaFor solution. How many milliliters of the NaFor solution should she add to 20 mL of the 0.10 M HFor to make the buffer?
2. When 5 drops of 0.10 M NaOH were added to 20 mL of the buffer in problem 3, the pH went from 3.40 to 3.43. Write a net ionic equation to explain why the pH didn't go up to about 10, as it would have if that amount of NaOH were added to distilled water or to 20 mL 0.00040 M HCl, which also would have a pH of 3.40.
Converting between Units of Pressure Gases are different from solids and liquids. In a sample of gas, the molecules are far apart. The gas molecules also move around and collide with each other as well as with the walls of the container. These col..
Draw the lawis structure and structural formulas for CCl3F. Sketch the space-filing model and the charge-density model for this molecule.
Calculate the percent of volume that is actually occupied by spheres in a face-centered cubic lattice of identical spheres. You can do this by first relating the radius of a sphere,r
If aluminum and sulfide come together to form an ionic compound, the formula for the ionic compound would be
A saturated solution of nickel(II) sulfide contains approximately 3.6 multiplied by 10-4 g of dissolved NiS per liter at 20°C. Calculate the solubility product Ksp for NiS at 20°C.
How many grams of I2 are present in a solution if 37.60mL of 0.170M Na2S2O3 solution is needed to titrate the I2 solution
A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.05% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 1.00 L of the sample at 31 degrees C and 1.00 atm?
Which one of the following substituents is deactivating and ortho-para directing in electrophilic aromatic substitution reactions. a. -Cl b. -CO2H c. -N(CH3)2 d. -CH=CH2
How are the following aspects of a reaction affected by the addition of a catalyst. 1) activation energy of the reverse reaction A) Increased B) Decreased
what vibrational bands would be prominent in the Ir spectra of 3-aminoacetophenone and 1-(3nitrophenyl) ethanol?at approximately what frequency
The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
The energy of a photon is 3.16 times 10^-19J. what is the wavelength of the corresponding light. what is the color of this light.
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd