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Titrating a weak base with a strong acid.
calculate the ph at the equivalence point for the titration of 0.10 M NH3 with 0.10 M Hcl. the Kb for NH3 is 1.8 10^-5.
calculate the pH half way to the equivalence point for this same system.
Develop an argument based on bond enthalpies for the importance of SiO bonds in substances common in the Earth's crust in preference to SiSi or SiH bonds
What volume in milliliters of a 0.5 solution of copper ll sulfate, CuSO4, is needed to react with an excess of aluminum to provide 11g of copper?
The molar mass of the substance was found to be about 300g/mol. what is the molecular formula of the unknown powder? was the substance cocaine?
When sodium reacts with chlorine, 411 kj/mol is released. Calculate the amount of heat released if 1.37 mol of sodium form.
Why do some scientists have concerns have regarding further increases in bio fuel production. giving chemical reasons explain why is is expensive to manufacture ethanol from cellulose.
Determine how many grams of Phosphorus tri-fluoride will be produced when 40.1 g of F2 mix, and the reaction has a 78.1% yield?
Assume that the kinetic energy of a 1300 kg car moving at 105 km/h could be converted entirely into heat. What amount of water could be heated from 20.°C to 64°C by the car's energy?
Important information about balanced chemical equation, 1. If 1 mole of Al4C3 has a mass of 144g and carbon has a mass of 12g, what is the atomic mass of aluminum?
How much heat is required to warm 231 g of ice from -45.1°C to 0.0°C, melt the ice, warm the water from 0.0°C to 100.0°C, boil the water, and heat the steam to 173.0°C
a bacterial culture isolated from sewage produced mL of methane,ch4 at 30C and 749 mmHg. What would the volume of methane at standard temperature and pressure 10 C 760 mmHg'
In clavulanic acid there is a carbon-atom that that has an oxygen-atom, a nitrogen-atom, and a carbon atom attached to it
Which has the highest vapor pressure?
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