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!
Solution A is twice as concentrated as solution B but has a smaller absorbance value. Both solutions abosrb maximally at wavelength =585 nm. Give a through explanation for this observation.
What is the molarity of a solution prepared by dissolving 4.92 g of calcium nitrate, Ca(NO3)2, in 250 mL of water? (The molar mass of Ca(NO3)2 is 164 g/mol.)
the value of delta h for the reaction h2 g plus br2 g yields 2hbr g is -72 kj. how many kj of heat are releasedwhen 1.0
a 0.500 l solution of 7.50 m hydrochloric acid is used to neutralize a 250.0 g sample of calcium hydroxide. calcium
H2S and H2O have similar structures and their cenertal atoms belong to the same group. Yet H2S is a gas at room temperature and H2O is a liquid. Use bonding principles to explain why this is.
The acid-dissociation constants of sulfurous acid (HeSO3) are K a1 =1.7 x 10^-2 and K a2 = 6.4 x 10^-8 at 25.0 °C. Calculate the pH of a 0.163 M aqueous solution of sulfurous acid.
Predict whether a reaction will occur in aqueous solution between the following pairs of substances. If a reaction does occur derive the net ionic equation. Specify the driving force : Precipitate formation (P) Water formation (W)
M. tuberculosis, the organism that causes tuberculosis, can be completely destoryed by irradiation with UV light with a wavelength of 254 nm. What is the frequency?
After treatment with trypsin, which cleaves at R and K, there were 3 fragments: two dipeptides and MGAV. What is the sequence of the peptide? Use the one-letter abbreviations for the amino acids, and do not use dashes.
A 3.664 g sample of a monoprotic acid was dissolved in water and required 20.27 mL of a 0.1578 M KOH solution for neutralization. what is the molar mass of the acid
calculate the value of delta s when 1.90 mol of rmch3 rmohl is vaporized at 64.7 circ rm
a)how are a beta particle and an electron similar? b)what symbols are used for beta particles? c)what is the source of a beta particle
A solution of sodium chloride in water hasa vapor pressure of 20.9 Torr at 25 degrees celsius. What is the mole fraction of NaCl in this solution
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