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A 0.988 mole sample of argon expands from 25.0 L to 35.0 L at a constant temperature of 350 K. Calculate delta G for the expansion.
"Given the following standard reduction potentials, E°redAl3+/Al = -1.66 V. E°redCr3+/Cr = -0.74 V.
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 11.5g of HF and 25.0 g
Cars were timed by police radar as they passed in both directions below a bridge. Their velocities (kilometres per hour, numbers of cars in parentheses) to the east and west were as follows
Suppose that 28 g of gold is initially at 29.0 degrees celsius. What is the final temperature gold upon absorbing 2.25 kJ of heat?
Assuming the reduced mass associated with the stretch equals the mass of the hydrogen atom, preduct the frequency of the C-D stretch of CDCl3
Calculate the "molar heat of dissolution" (kJ/mol). Recall heat capacity of water is 4.184 J/g degrees celsius.
An unknown mass of each of the given substances as with The final temperature is recorded as indicated 1.Pyrex glass (tf=67.6 C), 2.Sand (tf=70.4 C), 3.ethanol (tf=45.9 C), initially at 19.0 degrees celsius, absorbs 1930 Joules of heat
The combustion of an organic compound releases 35.6 kJ of energy and causes the temperature of a constant volume calorimeter to increase by 4.76 °C .
An unknown organic compound has the empirical formula C2H2O. A solution of 3.775 g of the unknown compound dissolved in 12.00 g of water is cooled until it freezes at a temperature of 4.72°C.
Tell what type of chemical reaction is represented by the following chemical equation.
The total molarity of acid and conjugate base in this buffer is 0.100 M . A student adds 6.10 mL of a 0.380 M solution to the beaker. How much will the pH change?
H2S and H2O have similar structures and their cenertal atoms belong to the same group. Yet H2S is a gas at room temperature and H2O is a liquid. Use bonding principles to explain why this is.
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