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What are the properties of group13 elements?
Write equations for the half-reactions that occur in the electrolysis of molten potassium bromide.
a solid circular rod that is 800 mm long with a radius of 15mm is subjected to an axial force of p80kn. the elongation
A mixture of gases contains 4.32 g of Ar, 7.88 g of BF3, and 4.86 g of N2. What is the partial pressure in atm of each component of this mixture if it is held in a 61.3-L vessel at 10.9 oC? Use R = 0.0821 L-atm/mol-K as the value of the gas consta..
A feed mixture of ethanol and water is 40 mole % ethanol. The feed is at 200 degrees Celcius and is at a high enough pressure that it is liquid. It is input into the column through a valve, where is flashes. Column pressure is 1 kg/cm^2. Find the ..
Problem- Ethyl acetate reacts with H2 in the presence of a catalyst to yield ethyl alcohol- C4 H8O2(l) +H2(g)-------> C2H6O6(l) Part a) Write a balanced equation for the reaction.
Strawberries contain about 15 wt% solids and 85 wt% water.To make strawberry jam, crushed strawberries and sugar are mixed in a 45:55 mass ratio, and the mixture is heated to evaporate water until the residue contains one-third water by mass.
If it takes 526 J of energy to warm 7.40 grams of water by 17 degrees Celsius, how much energy would be needed to warm 7.40 grams of water by 55 degrees Celsius?
It takes 54.0 J to raise the temperature of an 10.3g piece of unknown metal from 13.0C to 25.0 C. What is the specific heat for the metal?
calculate the amount of heat in joules (q) required to affect this temperature change and the total change in internal energy, ?U. Note that some books use ?E as the symbol for internal energy instead of ?U.
During a fire, it was expected by the fire department report that the tank temperature rose to 365 degrees Fahrenheit. Find out the pressure of the oxygen gas in the tank during the fire.
Problem- Household ammonia is a dilute solution of ammonia in water, usually around 3-5% by mass. A 13. mL sample of household ammonia was titrated by 34.90 mL of .110 M HCL. Calculate the molarity of the ammonia and the mass percent, assuming the..
A flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 50.0 mL of 0.230 M NaOH. what volume of NaOH is needed to reach the end point of the titration
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