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A 10.0 long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.40 . The density of ethanol is 0.789. Calculate the inner diameter of the tube in centimeters.
The concentrationof the alkane C20H42 (FM= 282.55) in a particular sample in rain water is 0.2ppb. Assume that the density of the rain water is close to 1.00 g/ml and find the molar concentration of C20H42.
Given that there are 1.8 x 10^20 moles of diatomic molecules present, how many kilograms of ice (at the North and South Poles) will this quantity of heat melt at 0°C. (The molar heat of fusion of ice is 6.01 kJ/mol.) find in Kg
What is the hardness of this mineral? What is the specific gravity of this mineral? show your calculations. Using all these properties, identify this mineral?
The sulfuric acid in a car battery has a density of 1.225 g/cm3 and is 3.75 M. What is the molality, mole fraction, and percentage of sulfuric acid by mass in this solution?
An aqueous solution containing 2.0M of AgNO3 is slowly added from a burette to an aqueous solution that holds 0.01M Cl- as well as .01M Br-. Is separation of the two ions by selective precipitation feasible? Assume 10^-5 M as the complete removal ..
Determine the entropy change for freezing 6.33 grams of C 2 H 5 OH at 158.7 K? H =-4600 J/mol. Express your answer in units of J/K.
Calculate the fraction of hexane molecules that reside in the vapor above the solution
Predict whether a precipitation reaction will occur when aqueous solutions of the following substances are mixed:
What would be the product if a 1:1 mole ratio of benzaldehyde to acetone was used in an Aldol condensation?
A 17.0-g sample of ice at -19.0°C is mixed with 101.0 g of water at 87.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
How much heat is required to warm 1.50 L of water from 30.0 C to 100.0 C? (Assume a density of 1.0g/mL for the water.)
Predict the following Bronsted acid-base reaction at 25 C: HF+CL- -> HCL + F- (a)Predict whether K will be greater or smaller than one? (b)Does delta S prime and delta H prime make a greater contribution to delta G prime?
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