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!
All living things contain carbon. Most of this carbon is stable carbon-12. Nevertheless, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time. As living things eat and breathe, carbon is constantly recycled as well as therefore the percentage remains constant. It's not until death that the percentage of carbon-14 will begin to diminish due to decay. Consequently, it is extremely easy to find out how long a fossil has been dead. The half-life of C-14 is 5730 years.
A fossil was analyzed and determined to have a carbon-14 level that is 64.0 % that of living organisms. How old is the fossil?
determine the activation energy (in kJ/mol) for the reaction. Note that the reaction is "3/2" order in CH3CHO so k has the units of 1/M1/2 s. Strategy: consider the Arrhenius equation written as a linear equation.
Calculate the molar solubility of Fe(OH)2 in a buffer solution where the pH has been fixed at the indicated values. Ksp = 7.9 x 10-16.
Using structural formula, how would you write the chemical reaction which explains how the product of the acidification reaction reacts with OH-. How would this explain the changes in solubility?
If a solution of sea water was found to have a molarity of .26 m, what is the new freezing point of this water? (Kf = 1.86 degrees C/M)
Cyclohexene as well as 2-hexyne both have the molecular formulaC6H10. How would you use infrared spectroscopy to distinguish between the two compounds
What is the resulting pH when .005 moles of KOH is added to .1 L of buffer solution that is .100 M in H2PO4- and .100 m HPO4^2- and the Ka2 = 6.2x10^-8
A volume of 550mL of gas was collected over water at 21oC and an atmospheric pressure of 743 Torr. The vapor pressure of water at 21oC is 19 Torr. How many moles of oxygen were collected
What is the density of a sample of ammonia (NH3) gas in a 4.32 L flask at a pressure of 641 torr and a temperature of 37.0oC?
After equilibration GC analysis of octanol phase shows component concentration of 0.4 M. What is the partitioning coefficient of this component? (Octanol/water partitioning coefficient expressed as K = Coct/ Cwater)
using a sample as a mixture of cucl2 agno3and fecl3. when a sample of 1.0000-g of this cucl2 agno3and fecl3 mixture is
Concentrated acetic acid is 17.5 M; vinegar is 0.87 M acetic acid. How much concentrated acid do you need to make 24 L of vinegar? Use the equation c1V1=c2V2 (where c = concentration and V = volume)
a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide. 2 NH3(g) CO2(g) ? NH2CONH2(aq) H2O(l) What volume of ammonia at 45°C and 1.60 atm is needed to produce 908 g (2 lb) of urea?
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