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A Student reacts 4.0 grams of nickel (II) Chloride Hexahidrate with 4.0 grams of ethylenediamine (NH2CH2CH2NH2). Calculate the theorethical yield of [Ni(NH2CH2CH2NH2)3]Cl2*2H20
mole of naphthalene(C10H8), a solid, is burned in a constant- volume bomb calorimeter at 298K, 5150 kJ of heat is evolved. Calculate delta H for the raction on a molar basis.
A sample of 0.0020 mole of HCl is dissolved in water to make a 2000mL solution. Calculate the molarity of the HCl solution, the {H3O}, and the pH.
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
zinc metal is added to hydrochloric acid to generate hydrogen gas and is collected over a liquid whose vapor pressure
How do I know how many subshells each letter has (s, p, d, f) and how do I know how many electrons can be found in each subshell. E.g. why does 4f have 14 electrons
If a 88.2 gram charcoal briquette (assume pure carbon) is burned in an excess of oxygen, what mass of CO2 is produced by the reaction
calculate the amount of heat needed to boil of ethanol beginning from a temperature of . round your answer to
The atoms in the periodic table span 7 shells. Order them from lowest to highest energy. Why do they have this order
For caffeine, the partition coefficient between methylene chloride and water is approximately 8. If you add the following to a separatory funnel - 10 g caffeine,
A lab bench has three one liter stoppered flasks. Flask A contains one gram of NH3 gas, flask B contains one gram of N2 gas, and flask C contains one gram of SO2 gas. All are at the same temperature.
Sodium Carbonate (NaCO3) is available in very pure form and can be used to standardize acid solutions. What is the molarity of the HCl solution if 25.3 mL of the solution is required to react with 0.256 g of Na2Co3
a 7.5- sample of hydrogen gas completely reacts with 60.0 of oxygen gas to form 67.5 of water. is the following data
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