Calculate the freezing point and boiling point
Calculate the freezing point and boiling point of an aqueous solution that is .040 molality in Na3PO4. Assume that the salt is totally dissociated.
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A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively.
How many molecules of carbon dioxide are produced when 132 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
Treatment of X with ozone follwed by zinc in aqueous acid gives a ketone plus formaldehyde (CH2=O). What is the structure of X?
Calculate the heat given off when 177 g of copper cools from 155.0 Celsius to 23.0 Celsius. The specific heat capacity of copper is .385 J/g C.
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C? (ethylene glycol is nonvolatile.
Solid lithium hydroxide reacts with gaseous carbon dioxide to form solid lithium carbonate and liquid water. What mass of carbon dioxide can be removed from the air by using 325 g of lithium hydroxide?
The mass of the silver halides obtained was 0.9987 g. What is the molarity of HBr in the original solution and what is the molarity of HCl in the original solution?
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