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The vapor pressure of water at 60°C is 0.196 atm. In order to reduce the vapor pressure to 134 torr (1 atm = 760 torr), how much propylene glycol (condensed formula: CH2(OH)CH(OH)CH3) must be added to 0.450kg of water?
In a calorimeter, 10.0 g of ice melts at 0oC. The enthalpy of fusion of the ice is 334 J/g. How much heat was absorbed?
Calculate the molar mass of (a) a gas that has a density of 1.98g/L at STP and, (b) an unknown liquid for which 3.33 liters at STP is found to weigh 10.88g
Compute the boiling point of an aqueous solution containing 121.5 g of copper (II) chloride as well as 4.50E2 g of water. State the boiling point elevation constant for water is 0.512 C/m.
A 4.63 g sample of a molecular compound is dissolved in 103 g of tetrachloromethane (carbon tetrachloride). The normal boiling point of the solution is 61.51?C.
an oxygen tank contains oxygen at a pressure of 70 kpa. when the pressure drops to 36 kpa the temperature increases
a new temperature scale is proposed based on the melting andboiling point of benzene. the melting point os benzeneis
Calculate the amounts of Na2HPO4 and NaH2PO4 (in grams) needed to prepare 200 mL of a buffer with pH = 8.25 so that the sum of concentrations
Calculate the amount of heat required to heat a 3.6 kg gold bar from 25 C to 64 C. Specific heat capacity of gold is 0.128 j/g C.
The vapor pressure of is 100 at 5.4, and the normal boiling point is 56.8 . what is enthalpy in vaporation in kj/mol?
Problem- Write down the chemical formula for 3 weak acids and 3 strong acids and 3 weak bases and 3 strong bases.
To construct a detailed sequence of reactions to synthesize 4-cyclohexyl-3-methyl-1-butanol as the MAJOR substrate product.
Write rational arrow-pushing mechanisms leading to three additional products that might have been formed in the reaction of alpha-pinene oxide with aqueous sulfuric acid that are different from the product you isolated and the decomposition produc..
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