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How much heat is lost when 12.55 g of zinc vapor at 907 degrees celsius is cooled to 425 degrees celsius?
Complete the balance each of the following equation for the following equation for acid-base reactions. H3PO4(aq) + Sr(OH)2(aq) -->
A mineral oil has a density of 0.875g/cm^3. Suppose you spread 0.65g of this oil over the surface of water in a large dish with an inner diameter of 21.6 cm. How this is this oil layer
To aid in the prevention of tooth decay, it is recommend that drinking water contain 0.90 ppm fluoride (F-). (a) How many grams of F- must be added to a cylindrical water reservior having a diameter of 5.20 x 102 m and a depth of 47.11 m
Explain why it is necessary to cinsider water vapor pressure in calculating the atomic mass of an unknown metal. Whould the calculated atomac mass be larger or smaller thatn the true value if water vapor pressure was ignored
When 10.0 g KOH is dissolved in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 25.18°C to 47.53°C. What is the enthalpy change, in kJ/g of KOH dissolved in the water? Assume that the solution has a specific heat capacity ..
Using a PH meter; the PH of cranberry juice cocktail was found to be 2046 which indicate that the [H3O+]=3047 x10^-3 M. Titration of a 1.0mL sample of the juice to approximately ph required 0.94mL of 0.10M NAOH
Question- A solution containing potassium bromide is mixed with one containing lead acetate to form a solution that is 0.013 M in KBr and 0.0035 M in Will a precipitate form in the mixed solution? If so, identify the precipitate.
If the current price of 30. g of vanillin is $112, determine the cost to supply enough vanillin so that the aroma could be detected in a large aircraft hangar with a volume of 3.8 x 10^7 ft^3.
Of the four general types of solids, which one(s) a. are generally low-boiling. b. are ductile and malleable. c. are generally soluble in non polar solvents
a mass of solid aluminum is at its melting point. what is the maximum mass of this sample that can be melted by 120 kj
Problem- A vapor-compression refrigeration system, using ammonia (R-717) as the refrigerant, is operating with and evaporator temperature of -5 degree C and condenser temperature of 40 degree C.
The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 2-methyl-2-butene, which reactants should be used?
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