Determine how many grams of water are in the sample
A 45- piece of ice at 0 is added to a sample of water at 22. All of the ice melts and the temperature of the water decreases to 0 . How many grams of water are in the sample?
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A particular first-order reaction has a rate constant of 1.35 × at 25°C. What is the magnitude of k at 95°C if = 55.5 kJ/mol?
A gas is heated from 255 K to 284 K while its volume is increased from 24.0 L to 32.0 L by moving a large piston within a cylinder. If the original pressure was 1.08 atm, what would be the final pressure?
In a test on the vaporization of water into air in a wetted-wall column, the following data were obtained: Tube diameter= 1.46 cm. Calculate the rate of mass transfer of water in air.
The other main peaks appeared at m/z = 71 and 43. Suggest a possible structure for this ketone and briefly explain your reasoning.
at 986°C is 0.63. A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide, 0.20 atm of water vapor, 0.30 atm of carbon dioxide, and 0.27 atm of hydrogen. Is the system at equilibrium?
If the pressure of chloroform vapor in a flask is 154 mm Hg at 25.0°C, and the density of the vapor is 1.25 g/L, what is the molar mass of chloroform?
Organic reactions can be classified as substitutions, eliminations or additions and the reagents can be classified as electrophiles, nucleophiles or radicals.
A solution of 120 mL of 0.150 M KOH is mixed with a solution of 280 mL of 0.250 M NiSO4. How many grams of the precipitate can be formed?
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