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!
Question- An archaeologist discovers a fossil with a carbon-14 activity of 7.5 dpm per gram of carbon. If carbon-14 has an activity of 15.3 dpm, what is the estimated age of the fossil? (t1/2 = 5730 years)
Express your knowledge to solve the above question
A certain medal hydroxide M(OH)2, contains 32.8% oxygen by mass. What is the identity of the metal M
Find the total number of atoms in a sample of cocaine hydrochloride, C17H22ClNO4 of mass 20.0 mg.
The vapor pressure of the liquid C4H10 is 562.7mmHg at a temperature of 264.6K. The enthalpy of vaporization for this liquid is 22.4kJ/mol. What is the vapor pressure of C4H10 at a temperature of 286.6K in mmHg
Compute the entropy changes for the system, surroundings and the universe for the (a) reversible heating, as well as (b) irreversible heating of 1.0 mole of hydrogen from 300K to 600K. In (b) presume the surroundings to be at 600 K.
The tank can hold a pressure of 50.0 atm before bursting. During a fire the gas is heated to 500 C. What is the gas pressure, and will the tank contain the gas without bursting
Given an unknown sample of a solid, how would you decide that it is necessary to do a recrystallization. recystaillization-Why must you use a minimal amount of hot solvent
A 200.0-mL sample of the same tap water required 47.86 mL of the standard EDTA for titration at pH 10 using calmagite indicator. Calculate the molar concentration of Mg2+ in the tap water.
Suppose that 155g of ethanol at 21 degrees Celcius is mixed with 240g of ethanol at 88 degrees Celcius at constant atmospheric pressure in a thermally insulated vessel. What is the change in S of the system for the process? The specific heat capac..
question at relatively high temperatures nitrogen and oxygen more readily form a compound according to n2g o2 lt-gt
The Haber process is used in industry to produce ammonia from N2 and H2. A reactor contains NH3, N2, and H2 at equilibrium at 1000 K. The concentration of NH3 is 0.102 moles/liter, N2 is 1.03 moles/liter, and H2 is 1.62 moles/liter. Calculate the ..
What is the hybridization of the nitrogen atom in sulfathiazole? Assuming that the sulfur atom is sp2-hybridized, how many -electrons are there in the sulfathiazole ring?
at 273 k and 1.0010-2 atm the density of a gas is 1.2410-5 gcm3 a find vrms for the gas molecules bfind the moloculer
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