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!
1a.What steps can you take to determine the melting point of a sublimes before it melts?1b. Two substances, A and B, have the same melting point.How can you determine if they are the same without using any form of spectroscopy? Explain in details.
A solution contains Cr3+ ion and Mg2+ ion. The addition of 1.00 L of 1.55M NaF solution is required to cause the complete precipitation of these ions as CrF3(s) and MgF2(s). The total mass of the precipitate is 50.2g.
Assume that .20 mol of the acid is added to 250 mL of water. To make a buffer of pH = 4, how many moles of the conjugate base must be added to the solution?
For each of the following pairs of compounds, explain the difference in melting point in terms of the intermolecular forces involved. a) hexane (C6H14) m.p. = -96 0C vs. octadecane (C18H38) m.p. = 28 - 30 0C
For the titration of 50.0 mL of 0.020 M aqueous salicylic acid with 0.020 M KOH(aq), calculate the pH after the addition of 55.0 mL of KOH(aq). For salycylic acid, pKa = 2.97.
As a result, the pressure inside the vessel drops to 30.64 atm at 25 C. Calculate the final percent by mass of ozone in the vessel.
When 18.5 mL of propanoic acid and 19.0 mL of n-propanol are mixed together, calculate the volume of water expected if the yield of the ester were 100%
Why does an atomic emission measurement of concentration have more error associated with it than an atomic absorption
85.0 of is initially at room temperature (22). A chilled steel rod at 2 is placed in the water. If the final temperature of the system is 21.2, what is the mass of the steel bar?
The molar extinction coefficient of benzene equals 100 M-1cm-1 at 260 nm. Assume this number is independent of solvent. (a) What concentration would give an absorbance of 1.0 in a 1 cm cell at 260 nm?
The oxygen on the mineral surface gave emitted electron energies at 531 eV, corresponding to the 1s orbital of oxygen. Overall the researchers concluded that oxidation states were +2 for Hg and -2 for O.
A 1004.0 g sample of calcium carbonate that is 95% pure gives 225 L of carbon dioxide at STP when reacted with an excess of hydrochloric acid. What is the density in g/L of the carbon dioxide?
What is the maximum mass of water that can be released by heating a 8.904 g sample of nickel(II) sulfate heptahydrate?
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