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which compound has lowest soulubility in water?
a. diethyl etherb. methyl propyl etherc. 1-butanold. 2-butanole. pentane
3H2 + N2 -> 2NH3. At 200 degrees C in a closed container, 1.00atm of nitrogen gas is mixed with 2.00atm of hydrogen gas. At equilibrium, the total partial pressure is 2.00atm.
How many calories are required to warm 15.0 g of water from 75 C to 100.0 C and convert it to steam at 100.0 C? The heat of vaporization of water is 540 cal/g.
for the reaction Mg+2HCl yeilds H2+MgCl2, calculate the percentage yield of magnesium chloride if 100.g of magnesium react with excess hydrochloric acid to yield 330.g of magnesium cholride.
The observed melting point of camphor is often low. Look up the molal freezing point depression constant K for camphor and calculate the expected depression of the melting point of a quantity
A student finds that during a reaction, the 150.g of water in the reaction cup warms from 21.0 Celsius to 28.5 degrees Celsius.
How many grams of lithopone are produced in the reaction of 315ml of 0.275M ZnSO4 and 285 ml of 0.315M BaS?
A gas occupies 672 mL at 785 mmHg. What volume would it occupy at 453 mmHg at constant temp??
the solution is 0.55°C lower than the melting point of pure Camphor. Calculate the molar mass of the unknown compound
The half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. How long will it take for 10% of the U-238 atoms in a sample of U-238 to decay?
A solution is made by dissolving 3.14g of NaCl in 79.9mL of water. What is the concentration of sodium chloride in units of weight/volume percent?
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0 ? C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr, what is the partial pressure of O2
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
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