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!
An ecology-conscious gardner finds a container of DDT with about.78 in left. Wishing to dispose of it properly, he goes on a trip around the world and distributes the DDT evenly in all the oceans. After the DDT has mixed thoroughly in the oceans (this may take some time) he draws a glass of water from the nearest ocean. How many molecules of DDT would he expect to find in this sample?
(It may help in the solution to know that the volume of all the water in the oceans is estimated as 1.3x10^21 liters, and that it just happens that .78lb. of DDT is about a mole. We may assume also that there is no loss of DDT.)
Tritium, 3H, undergoes beta decay with a decay constant of 5.63 x 10-2 yr-1. How much time is required for a 1.00 g sample of tritium to decay to 0.250 g
The quadratic formula is used to solve for x in expressions taking the form of a quadratic equation: ax2 bx c = 0, Solve for x in the following expression using the quadratic formula
What is the molarity of sodium acetate. What is the pH of the solution. Please show the steps. (note pK = 4.76) Use log10 for all calculations.
The sample is dissolved in acidic solution and the manganese is oxidized to the permanganate ion MnO4-. The MnO4- ion is reduced to Mn2+ by reacting with 50 mL of .0800 M FeSO4 solution. The excess Fe2+ ions are then oxidized to Fe3+ by 21.9 mL of..
If the molar solubility of Cd3(PO4)2 at 25 oC is 1.19e-07 mol/L, what is the Ksp of Cd3(PO4)2 at this temperature
The element Na has bcc packing with a body-centered cubic unit cell. The density of sodium is 966 kg/m3. Calculate the volume (m3) of the unit cell of sodium.
A corrosion potential of -0.299 V versus SCE was measured for a corroding alloy. what was the potential versus SCE
a student prepared a buffer by adding 65 grams of sodium acetate and 50 mls of 6m acetic acid to beaker and then adding
Lactic acid, C3H6O3, is a monoprotic acid that is available in solid form. Determine the concentration of an unknown solution of sodium hydroxide, in moles per litre, given that it takes 18.34 mL to neutralize a solution containing 0.821 g of lact..
Problem- a 50 ml solution of 0.10 M ammonia (NH3) is prepared using pure water. This is then titrated against a 0.40 M solution of HCl. How much HCl must be added so that the pH of the resulting solution is 8.0? Ka of NH3 is 5.6 *10-10.
Pure gold can be made into extremely thin sheets called gold leaf. Suppose that 5.0 x 102 kg of gold is made into gold leaf having an area of 3620 m2.
Using proper electron movement, show the mechanism for the addition reaction of ethene (CH2=CH2) and HCl to form CH3-CH2-Cl.
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