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What is the change in internal energy (in J) of a system that absorbs 0.241 kJ of heat from its surroundings and has 0.680 kcal of work done on it?
What is the final volume of the balloon? Assume ideal-gas behavior. A very flexible balloon with a volume of 1.2 L at 1.0 atm at 300 K is allowed to rise to the stratosphere
The effect of increasing molecular weight (size) on alcohol solubility in water. B. The effect of more alcohol groups on alcohol solubility in hexanes.
A mixture of 2.0 mol of H2 (g) and 1.0 mol of O2(g) is placed in a sealed evacuated container made of a perfect insulating material at 25 C. The mixture is ignited with a spark and it reacts to form liquid water. Find the temperature of the water.
Calculate the pKa of the second ionizable group of Z.
The values of the specific rotation, [alpha]20D, for the alpha and beta anomers of D-galactose are 150.7 and 52.8 degrees, respectively. A mixture that is 20% of alpha-D-galactose and 80% beta-D-galactose is dissolved in water at 20 degrees C.
Given the following reaction: 4 KO2 + 2 H2O + 4 CO2 ==> 4 KHCO3 + 3 O2 How many moles of O2 will be produced if 3.12 moles of CO2 react completely?
A suitable storage place must be geologically stable long enough for the activity of plutonium-239 to decrease to 0.1% of its original value.
Describe the reactant and products of the chemical reaction. Was the reactant (potato chip) completely consumed? What evidence supports your answer?
The basic Salt sodium acetate, CH3COONa, is completely soluble in water. What is the pOH of a 0.25 M solution of sodium acetate?
the resulting mixture has (pb2+)i=1.0x10^-3M, (so4^-2)i=1.0x10^-4 for pbso4 ksp=1.3x10^-8. compare qsp to ksp and decide whether a precipitate will form.
Determine the volume of CO 2 at a temperature twenty two degree Celsius and a pressure of 781 mmHg could be absorbed by 327 grams of Lithium hydroxide LiOH?
If one started will 6.73 g of copper chloride, how many grams of copper could be produced?
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