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!
Problem- Need help with a lab I did this week. 2 mL of mountain dew was mixed with 10 mL of 0.10 HCl and then diluted to 100 mL with DI water. At wavelength 230 nm the absorbance was 0.767 and at 269 nm the absorbance was 0.243. By making calibration curves of standards I was able to determine that the molar absorptivity of caffeine at 230 nm is 0.0521 and at 269 nm it is 0.0926. It was also determined that the molar absorptivity of benzoic acid at 230 nm is 0.0883 and at 269 nm it is 0.0094. I need to determine the mg of each component in a 20 oz bottle of Mountain dew.
I am not able to get the correct answer please help me
Observe the following reactants and predict which of the following may form the potential products given the values for the energy of activation, , and enthalpy of the reaction, , in combination with the molecular orientation.
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting of 5.25 g of He, 14.6 g of Ne
Calculate the change in pH when 5mmols of OH- are added to 100mL of a solution that is 0.1 M CH3COOH and 0.1 M NaCH3COO.
bacl2nbsp na2so4nbspharrbaso4nbsp nacl- gravimetic determination of sulfate1 explain why adding an excess of
Given the two reactions: PbCl2 Pb2+ + 2Cl-, K1 = 1.80*10^-10, and AgCl Ag+ + Cl-, K2 = 1.19*10^?4, what is the equilibrium constant K final for the following reaction PbCl2 + 2Ag+ 2AgCl + Pb2+
Calculate the pH of each of the following solutions. (a) 0.100 M propanoic acid (HC3H5O2, Ka = 1.3 x 10^-5) (b) 0.100 M sodium propanoate (NaC3H5O2) (c) pure H2O (d) 0.100 M HC3H5O2 and 0.100 M NaC3H5O2
in an air-conditioned room at 19.0 c a spherical balloon had the diameter of 50.0 cm. when taken outside on a hot
if it takes 6.02 kJ of heat energy to melt a mole of ice, how much heat is absorbed when 6.30 g of water melts?
What is the central atom for CO2, how many bonds are formed, is it polar or nonpolar, what's the direction of electronegativity
What is the structure for an H NMR of C7H9NO giving signals of: 6.93, (0.93 H, triplet); 6.20 (1.03 H, doublet); 6.13 (1.01 H, doublet); 6.05 (1.03 H, singlet); 3.62 (3.00 H, singlet); 3.56 (3.01 H, singlet)
Calculate the wavelength in meters of light absorbed by an electron in an atom of hydrogen as it moves from n = 3 to n = 6.
After the second dilution 100.00ml of that solution where transferred to a 150.0 mL flask and it was diluted to the mark. What is the concentration of the final 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