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Determine the mass of lithium hydroxide producecd when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH
At a pressure of 1.00 atm and a temperature of 20ºC, 1.72 g CO2 will dissolve in 1 L of water. How much CO2 will dissolve if the pressure is raised to 1.35 atm and the temperature stays the same?
An appropriate indicator is used. Ka for acetic acid is 1.7x10^-5. Calculate the pH in the flask after 300 mL of 0.100 M NaOH has been added
Ethylene glycol is used as automobile antifreeze. 6.38g og this compound contains 2.47g of carbon and 0.620g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole.
How much does the molar enthalpy change when 147 g. of water cools from 90.0 C to 17.0 C when 20.0 g. of KCL is added to the water? Is this reaction exothermic or endothermic?
How many grams of NaN3 are required to produce 20.0 ft3 of nitrogen gas if the gas has a density of 1.25 g/L?
What percentage error would be introduced in a 35.0 mL sample of liquid if the air bubble comes out of the tip of the buret while the liquid sample is being transferred?
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot.
find the ph of the two equivalence points and the volume (ml) of 0.0414 M KOH needed to reach them in the titration of 17.3 mL of 0.130 M H2co3 (first equivalent point = ML KOH, and pH= )
Consider the voltaic cell , which is based on the following cell reaction. Zn(s) + Cu2+(aq) Zn2+(aq) +Cu(s) Under standard conditions
Calculate the final temperature when a 22.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 113 grams of water at 77.1 oC. Assume that there is no loss or gain of heat from the surroundings.
if a gas is at 2.3 atm of pressure and occupies 32 L of volume, how much volume will it occupy if the pressure is lowered to 1.5 atm?
A moth-ball, composed of naphthalene (C10H8), has a mass of 1.32 g. How many naphthalene molecules does it contain?
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