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Is copper complex of tetraphenylporphyrin(TPP) more polar or less polar than tetraphenylporphyrin(TPP) itself?
A 13.386 g aliquot of this solution is then titrated with 0.1052 M HCl. It required 30.21 mL of the HCl solution to reach the methyl red endpoint. Calculate the weight percent NH3 in the aqueous waste.
calculate the molecular weight of Isoamyl acetate with a density of 0.876. Then calculate the theoretical yield of isoamyl acetate in ml, grams and moles. Show all work and calculations.
a calculator to calculate the average and standard deviation for x1 through x12. i know how to find the average but i dont understand how to findthe standard deviation.
Considering given equation as P4(s) + 5 O2(g) P4O10(s) where ΔH = -3013 kJ/mol you just need to compute the heat evolved when 436 grams of white Phosphorous (P4)burns in air according to the given equation as above.
The minimum frequency of light needed to eject electrons from a metal is called the threshold and find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.27*10^14s^-1.
pure nitrogen can be prepared when an aqueous solution of ammonium nitrite decomposes to form water vapor and nitrogen gas. How many grams of ammonium nitrate must have reacted if 3.75dm3 of nitrogen gas was collected over water at 26C and 97.8 kP..
The forensic technician at a crime scene has just prepared a luminol stock solution by adding 20.0g of luminol into a total volume of 75.0 mL of H 2 O .
Two moles of a monoatomic gas are contained atpressure 1 atm and teperature 300 k. 34, 166 joules of heat are transfered to the gas as a result the gas expands and does work on the surroundings of 1214 joules.
compute the pH at the temperature of twenty five degrees Celsius of a solution combined by adding 50 mL of 1.60 M sodium hydroxide solution
Naturally occuring chlorine has two isotopes, Cl-35, which has an atomic mass of 34.969 amu and Cl-37. If the average atomic mass of chlorine is 35.46 amu and its natural abundance is 75.53%
If a solution containing 48.91 g of mercury(II) acetate is allowed to react completely with a solution containing 7.410 g of sodium sulifide how many grams of a solid precipitate will be formed?
Helium gas at constant pressure of 7.4 atm, expands in volume from 21.3 L to 79.2 L. The temperature is held at 278 K. Calculate the work done by the gas (in joules).
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