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What is atmospheric pressure in atmospheres in Denver for heat of fusion=40.6kj/mol at 95 degee celsius
Why does it not make sense to think of sand as just being composed of a bunch of SiO2 molecules
The balloon ascends to altitude of 1600 meters and its volume increased to 6.00 L. Assuming that the temp of the gas didnt change during the ascent, calculate the atmospheric pressure at 1600 meters in mmHg.
Determine the freezing point of an aqueous solution that is 1,7 m in ethylene glycol. The freezing point depression constant for water is 1.86°C/m The freezing point of pure water is 0.0°C.
A solution is made by dissolving 25.7 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution
a 3.00 l helium balloon initially at stp floats up to an altitude of 10 km where the pressure is 200.0 torr and the
A stream of humid air containing 1.00 mole% H2O(v) and the balance dry air is to be humidified to a water content of 10.0 mole% H2O. For this purpose, liquid water is fed through a flow meter and evaporated into the air stream. The flow meter, R, ..
The total molarity of acid and conjugate base in this buffer is .100 M. A student adds 7.10 mL of a .250 M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760
5L of CO2 at 500 torr and 3L of CH4 at 400 torr are put into a 10L container. what is the pressure exerted by the gasses in the container.
reacted with 0.0040 mol NaOH (very strong base) and then brought up to a volume of 1.0 liter with water. What is the pH of the resulting solution?
Calculate the partial pressure of ozone and the number of ozone molecules per liter of air if the tempreture and pressure were 20.0 degrees C and 758 mmHg, respectively.
Estimate the isoelectric point of ser-his dipeptide. Explain why this value is only an estimate.
100g of water (specific heat=4.184 J/g*C) and 100g of a metal sample (specific heat=0.397 J/g*C) are heated from 25 degrees celcius to 75 degrees celcius. Which substance required more thermal energy to reach 75 degrees celcius?
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