Calculate the number of moles of aluminum chloride
Sample of aluminum chloride increased in temperature by 3.5 K when the sample absorbed 167 J of energy. Calculate the number of moles of aluminum chloride in the sample. the C for aluminum chloride is 92 J/mol*K.
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Calculate the amount of heat released when 50g of steam at 100 degrees celsius hits the skin, condenses, and cools to a body temp of 37 degrees celsius.
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. Cal
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. Suppose 250. g of Na metal is formed. How many coulombs are required?
Microwave ovens use microwave radiation to heat food. How many photons are required to heat 200. mL of coffee from 19°C to 64°C?
Determine the molar mass of chloroform gas if a sample weighing .389 grams is collected in a flask with a volume of 102cm cubed at 97 degrees Celsius. The pressure of the chloroform is 728 mmHg.
A sample of oxygen at 48 C occupies 622 mL.If this sample later occupies 1252 mL at 55 C and 1.4 atm, what was its original pressure? Answer in units of atm.
What is the total number of moles of Ca needed to react completely with 4.0 moles of H2O?
A three-span continuous beam ABCD with three equal spans supports a uniform load with intensity q. Determine all reactions of this beam and draw the shear force and bending moment diagrams labelling all critical ordinates
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