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!
A weak acid (HA) has a pKa of 4.904. If a solution of this acid has a pH of 4.356, what percentage of the acid is NOT ionized? (Assume all H in solution came from the ionization of HA.)
The masses of the unknown and the solvent (water) were determinded, and the unknown completely dissolved in the water. Just before the jacketed test tube containing the unknown solution was placed in the ice-salt water bath
Suppose a worker fears being exposed. The source radiates wit 3540 rem at 500.0 cm. what minimal distance (m) should the worker remain?
In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion.
Two 20.0-g ice cubes at -18.0 °C are placed into 295 g of water at 25.0 °C. Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts.
What observed rotation is expected when a 1.06 M solution of (R)-2-butanol is mixed with an equal volume of a 0.530 M solution of racemic 2-butanol,
used to fill a weather balloon in order to lift equipment into the stratosphere. To what maximum pressure (in atm) could a 271 L balloon be filled?
Calculate the moles and the mass of solute in 250.0 mL of 6.00 M NaOH.
for a certain change, the value of change in U is -2.37kJ. during the change the system absorbs 650 joules. how much work did the system do?
What mass of this substance must evaporate in order to freeze 250 g of water initially at 15 C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c.K}.)
Describe each reaction and provide the name of all the chemical formula involved for each number.
Nitric oxide, sometimes used in the treatment of lung disease in premature children, is provided to the healthcare professionals as a solution of NO in nitrogen.
At 25oC, the acid dissociation constant for hypochlorous acid HOCl is 3.5E-8. Calculate the concentration of the hydronium ion in an aqueous solution of 0.30M HOCl.
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