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How many grams of barium hydroxide must be added to 2.37-L of distilled water to make a saturated solution?
Assuming that teh F-18 can be transported at 58.0 miles/hour, how close must the hospital be to the cyclotron if 63% of the F-18 produced is to make it to the hospital
a weather balloon at earths surface has a volume of 4 l at 285 k and 791 mmhg. if the balloon is released and the
Explain for which of the following species is resonance an important property: HONO, HONO2, N3-, NO2-, NO2
Using the following equation for the combustion of octane (C8H18) , calculate the heat of reaction (enthalpy change) when 100.0 g of octane C8H18 reacts with oxygen in a combustion reaction. The molar mass of octane is 114.33 g/mole.
The following table lists molar concentrations of several ions in seawater. Using a density of 1.022 g/mL for seawater
If a bottle of nail polish remover contains 150g of acetone, how much heat would be released by its complete combustion?
If the valence shell is considered to be n=4, how many valence electrons are in a stable ion of a period 4 metal
he worked up the reaction and isolated 2.4 g of MnCl2. What was his percent yield?
what is the mass number of an iron atom that has 28 neutrons? calculate the number of neutrons ofnbsp239pu. write the
How many moles and how many equivalent of H30+ are present in 50ml of a 0.3N solution of H2SO4
If acetic acid has a pure vapor pressure of 20 torr at 30 degrees C and acetaldehye has a pure vapor pressure of 1000 torr at 30 degrees C, a mixture of 12 moles of acetic acid
A 4.369g sample of metal is placed in a flask. water is added to the flask and the total volume in the flask is read to be 126.4ml.
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