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Calculate the pH of a solution containing 0.085 M nitrous acid (HNO2; Ka= 4.4 × 10-4) and 0.10 M potassium nitrite (KNO2).
What was the volume of the aluminum cylinder in cm3? The mass of the aluminum cylinder was determined to be 30.1 grams. What is the density of the aluminum?
What mass of H2 forms if 12 grams of Zn reacts with 7 grams of HCl?
The enthalpy change for converting 10.0 g of ice at -25.0°C to water at 80.0°C is __________ kJ. The specific heats of ice, water, and steam are and respectively. For H2O, Hfus = 6.01 kJ/mol, and
Calculate the mass of urea that should be dissolved in 225 g of water at 35°C to produce a solution with a vapor pressure of 37.1 mmHg.
Identify the two important classes of catalysts. Analyze the chemical reactions that take place when a biological catalyst combines
Atomic absorption spectrometry was used with the method of standard additions to determine the concentration of cadmium in a sample of an industrial waste stream
Determine the molarity of a solution that is formed by dissolving 21.0 g of CaF2 in a flask and adding water to make 446.2 mL of solution
How many seconds are required to produce 1.0 g of silver metal by the electrolysis of a AgNO3 solution using a current of 30 amps?
1) Why is it important to clean up any spills immediately, wash hands frequently, and wash glassware thoroughly when working with crystal violet solutions?
If 3.00 g of (NH4)2SO4 is dissolved in enough water to form 200. mL of solution, what is the molarity of the solution?
what is the molarity of a solution made by dissolving 26.42g of (NH4)2SO4 in enough H2O to make 500 mL of solution?
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
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