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Suppose a can contains a residual amount of gas at a pressure of 755 mm Hg and a temperature of 25 °C. What would the pressure be if the can were heated to 1155 °C?
the hydrogen atom relaxes to a lower energy level, emitting light of 397 nm. What is the value of n for the level to which the electron relaxed.
A 44 sample of water absorbs 329 of heat If the water was initially at 21.7, what is its final temperature.
Consider the following system at 100°C: N2O4(g) ?2NO2(g) Kc = 0.36 Predict the direction in which the system will move to reach equilibrium if we start with 0.20 mole of N2O4
What is the concentration (in M) of the nitrate ion when 17.3 mL of a 0.633 M solution of potassium nitrate is combined with 15.3 mL of a 0.662 M solution of aluminum nitrate to a final volume of 48.1 mL
A 4.60 g nugget of pure gold absorbed 288 J of heat. What was the final temperature of the gold if the initial temperature was 26.0°C? The specific heat of gold is 0.129 J/(g·°C).
The density of water at room temperature is lass than the assumed 1.0 g/mL used in the calculations for determining the enthalpy of neutralization.
When the flask was re-filled with an unknown gas, the same number of moles leaked out in 2.84 hours. Identify the unkown gas.
how many millimoles of HNO3 are needed to react completely with a .2800 gram piece of copper wire.
suppose sulfur dioxide reacts with oxygen at 25 degrees celsius.2so2 g o2 g -gt lt- 2so3 gthe equilibrium constant kc
Determine the empirical formula of the amino acid, given an amino acid which consists of the elements carbon, hydrogen, nitrogen, and oxygen.
Hydrazine derivatives are commonly used in rocket fuels. Combustion of N2H4 produces N2(g) and H2O(g). When 1.00 g of N2H4 is burned in a bomb, DT = 3.51 oC. If C = 5.51 kJoC-1, what is the quantity of heat evolved? What is DH of this reaction?
If I burn 0.315 moles of hexane (C6H14) in a bomb calorimeter containing 5.65 liters of water, what's the molar heat of combustion of hexane is the water temperature rises 55.4 ºC? The heat capacity of water is 4.184 J/g ºC .
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