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An unknown mass of each of the given substances 1.Sand (tf=70.4 C),2.Pyrex glass(tf=67.6 C),3.water(tf=55.9 C) ,4.ethanol (tf=45.9 C), initially at 19.0 degrees Celsius, absorbs 1930 Joules of heat. Find out the mass of each substance.
Find the amount of known substance present in the mixture and determine the mass of calcium carbonate present in original mixture.
Identify the unknown gas - Find the molecular formula of the compound
Find the concentration and pH solution - What is the pH of a solution of 0.65 M acid and 0.51 M of its conjugate base if the pKa = 5.30?
Determine the calculated pH of the solution if initially there is 2.0mL of CH3COOH at an initial concentration of 0.89M and 0.80mL of 1.0M Hydrochloric Acid is combined.
When you heated the hydrated compound this process starts slowly at first find out the reason behind this and compute k for this acid if A 0.020 M solution of weak acid HA is 0.60% ionized.
Calculate the PH of this solution.
Write down the electron configuration of the B+ ion using the noble gas core notation and What you will expect for the molecular formula, C7H6O2( Benzoic acid) if Determination of The molar mass of benzoic acid
Application of Avogadro's law - To evaluate the volume of a gas using Avogadro's Law.
What volume of 0.200M Hydrochloric acid must combined to 250mL of 0.300M C8H7NaO3 to produce a buffer of solution with a pH of 3.37?
The standard free energy of activation of a reaction X is 89.4 kJ mol-1 at 298 K. Reaction Y is one million times faster than reaction X at the same temperature.
Compute the atomic weight for this naturally occurring element A and A Naturally occurring element A exists in three forms of its isotopes
Design a tube and shell heat exchanger for the fluids and duty given for you and complete Project Management tasks
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