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a solution of 0.95 g of a compound in 120 g of cyclohexane has a freezing point of 6.08 degree celsius. what are the molality of the solution and molar mass of the solute.
A chemist calculated the theoretical yield of a product to be 26.8 g. The percent yield was 92.2%. How many g of product were actually obtained
Write the equation for the conversion of the fatty acid linoleic acid [CH3-(CH2)4-CH=CH-CH2-CH=CH(CH2)7-COOH] into its methyl ester.
Calculate ΔH and ΔStotal when two iron blocks each with mass of 1.00kg, one at 25'C and one at 250'C are placed in contact with each other in an isolated container.
A scuba diver with a lung capacity of 5.4 inhales a lungful of air at a depth of 48 and a pressure of 5.8. If the diver were to ascend to the surface (where the pressure is 1.0 ) while holding her breath, to what volume would the air in her lungs ..
A sample of nitrogen gas in a 4.5-L container at a temperature of 27 C exerts a pressure of 4.1 atm. Calculate the number of moles of gas in the sample
Assuming complete dissociation of the solute, how many grams of KNO3 must be added to 275 mL of water to produce a solution that freezes at -14.5 C?
Write the balanced net ionic equation for the reaction that occur in the following case. and identify the spectator ion(s) in this reaction Cr2(SO4)3(aq)+(NH4)2CO3(aq)
Explain both alkene and carbocation stability as it relates to hyperconjugation. - Explain how hybridization relates to alkene stability.
Assuming the heat absorbed by the styrofoam is negligible, calculate the expected final temperature. The specific heat of water is 4.184 J g-1 K-1.
Make an energy level diagram for the nueclear spin states in a magnetic field. Calculate the transition frequency in a 0.1 T field.
If 6.73 g of Na2CO3 is dissolved in enough water to make 250. mL of solution, what is the molarity of the sodium carbonate?
Find the mass fraction and mole fraction of each component, the molar mass of mixture, and it's gas constant.
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