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Q1. Assuming pressure remains constant, calculate the final volume in each of the following cases.
a) A volume of 35.0 mL of gaseous hydrogen is heated from 20 °C to 120 °C;
b) A volume of 15 L of air is chilled from 80 °C to -25 °C.
Q2. The temperature of a room whose volume is 8.95 x 104 L goes from 20 °C to 30 °C. What volume of air will the room lose following this rise in temperature?
Q3. Calculate the initial volume of a sample of a gas if its final volume is 344 mL after being heated from -10 °C to 40 °C. (Think carefully here.)
A chemist burns a a saltine cracker in a calorimeter containing 2.0 kg of water. The water temperature increases from 25.0°C to 29.7°C. Calculate the heat content of the cracker in J per cracker.
Problem- Purification of nickel can be achieved by electrorefining nickel from an impure nickel anode onto a pure nickel cathode in an electrolytic cell. How many hours will it take to plate 16.5 kg of nickel onto the cathode if the current passed..
What mass of trisodium phosphate is required to prepare 250.0 ml of a solution which is 0.30 M in sodium ion
What mass of CO2 will be produced when 100.0 g of C8H18 react completely in the equation? 2C8H18 + 25O2 = 16CO2 + 18H2O
If we assume that the atmosphere of the earth is an ideal gas mixture, then each component is described by a separate barometric equation. This model predicts that the concentrations of heavier molecules, and therefore their partial pressures, dec..
Butane (C4H10) is burned to completion in air. How many moles of air are used for each mole of butane if 18% excess oxygen is used
Calculate the mass of the iron sample if this required 13,200 Joules.
Normalize the total energy eigenfunctions for the three-dimensional box in the intervals 0 ? x ? a, 0 ? y ? b, 0 ? z ? c.
What is the percent of H2O in a sample of a hydrate whose mass is 1.1290 g if the mass of water in the sample was 0.1660 g?
Describe what happens to time and length at speeds close to the speed of light.
Sketch a heating curve for a substance X whose melting point is 40oC and whose boiling point is 65oC. Describe what you will observe as a 60.0 g sample of X is warmed from 0oC to 100oC.
A weak acid with the general formula of HA will react with a base, such as NaOH. Write the neutralization equation which describes the reaction.
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