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source voltage= 40V
series resistance = 200 ohm
zener voltage= 15V
GIVEN
(A) PhCHO
(B) CH2(CO2Et)2
(c) PhCOCH3
DESIGN TWO ROUTE FOR THE SYNTHESIS OF PhCOCH2CH(Ph)CH(CO2Et).
(1)EACH OF THE ROUTE SHOULD GO THROUGH THE MICHAEL ADDITION REACTION.
(2) COMMENT ON THE SUITABILITY OF EACH ROUTE.
a solution of gold (3) trioxonitrate (5) is electrolysed using a current of 25mA until 1.2g of gold is deposited at the cathode . what is the amount of electricity that would have passsed through the solution. and how long will it take for such an amount of gold to be deposited. then calculate the volume of the gas liberated at the anode.
11. Describe how you would prepare 465 mL of 0.3550 M
potassium dichromate solution starting with
(b) 0.750 M potassium dichromate solution
What is the maximum amount in moles of P
2
O
5
P2O5 that can theoretically be made from 112 g
g of O
2
O2 and excess phosphorus?
as two boats approach the mariner the velocity of boat 1 relative to boat 2
14119 € was deposited on 4.4.2006 in a bank account. The interest rate was 3,5 % (p.a.) and the tax at source rate was 30 %. The bank added the accrued interest to the capital at the end of each year. Calculate the accumulated value of the investment on 4.4.2010 when the account was closed.
Create a simplified expression for the perimeter of this rectangle. Horizontally it is labelled 3x-11, and vertically it is labeled x+9. What do I do??
A 10.00 mL sample of ethanol is added to 250.0 mL of water in order to observe the freezing point depression of the water. Consider the possible errors in this experiment, and determine whether each would cause the freezing point of the water to increase, decrease, or remain the same compared with the expected results
The freezing point depression constant, Kf, for camphor is very large, 37.7 ⁰C•kg/mol, making camphor a useful solvent to determine the mass of larger molecules, such as peptides. 122.5 mg of a peptide dissolved in 1.50 g of camphor gives a freezing point depression (ΔTf) of 1.13 ⁰C. What is the molecular mass of the protein?
#340153 on Dec 2023