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NH3 is a weak base (Kb = 1.8 × 10-5) and so the salt NH4Cl acts as a weak acid. What is the pH of a solution that is 0.049 M in NH4Cl
Write the balanced net ionic equation for the following dissolution reaction: Zn(OH)2 in aqueous NaOH
If a wheelchair-marathon racer moving at 13.3 miles per hour expends energy at a rate of 635 Calories per hour, how much energy in Calories would be required to complete a marathon race (26.2 miles) at this pace
it is found that 1.431g of element x ciontains 7.509 *10^21 atoms. calculate the atomic mass of x
Calculate the pressure when the volume is 1.27 L and the temperature is 3.00 × 102 K.
How many moles of an ideal gas would occupy a 25.0 liter container when the temperature is 22.0° C and the pressure is 646 torr?
Why isn't the pH at the equivalence point always equal to 7 in a neutralization titration? When would it be 7?
why is the presence of non-atomic species, such as metal oxides, detrimental to an analysis using atomic spectroscopy. which type(s) of atomizers can suffer from this effect and why.
A 55.0-L steel tank at 20.0°C contains acetylene gas, C2H2, at a pressure of 1.39 atm. Assuming ideal behavior, how many grams of acetylene are in the tank?
A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. the combustion of 88.5 mg produced 241 mg of CO2 and 49.2 mg of H2O. the molar mass of the compound was 162 g/mol.
The mixture is ignited with a spark and it reacts to form H2O (l)liquid water. determine the temperature of water?
What is the pH of this buffer after 0.45 mL of 10.0 M hydrochloric acid are added to it? The Ka for HF is 6.8 x 10-4.
Determine the volume of 0.375 mol of C4H10 gas under the same temperature and pressure conditions?
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