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Questions:
1. What is the difference between the term HEAT (Q) and Heat of a Reaction (Hrxn)?
2. Give some laboratory situations or chemistry problems showing what data needs to be measured in order to calculate Heat (Q) and Heat of a Reaction (H).
3. What is a thermochemical equation? How is this different than a chemical equation?
4. Discuss how a thermochemical equation can be used to calculate the heat released in a chemical reaction when the mass of a reactant is known, or how the amount of a reactant or product can be calculated when given the amount of heat released?
5. Give some laboratory situations or chemistry problems where you would use a thermochemical equation.
Question- The two complexes shown below have significantly different magnetic properties. Determine the correct geometry for each and indicate the splitting pattern for the d-orbitals with electrons shown.
The atomic weights of sodium, oxygen, and hydrogen are 23, 16, and 1, respectively. To neutralize 4 grams of NaOH dissolved in 1 L of water requires 1 L of: (A) 0.001 normal HCl solution (B) 0.01 normal HCl solution (C) 0.1 normal HCl solution (D)..
Aqueous solutions of sodium sulfide as well as copper (II) chloride are mixed together. State which statement is correct?
What extinguishing agent can best fulfill the mission of saving lives and protecting property better than water? Why?
Write a dissociation equation of AlCl3 showing its sepatation into aqueous ions.
The reaction is first order in Co(NH3)5Br2+ the rate constant at 25 ?C is 6.3×10?6 s?1 and the initial concentration of Co(NH3)5Br2+ is 0.100 M.
Ethylene gycol has a density of 1.11g/mL. What is the volume of 30.0 g of ethylene glycol?
A baseball weighs 220 g. Top speed for a professional pitcher is about 100 mph when he throws a fast ball. Find the de Broglie wavelength
A gas mixture composed of helium and argon has density of 0.670 g/L at 755 mmHg and 298K. What is the composition of the mixture by mass
Explain how much volume of 63 percent w/w aq. HNO3 solution (d=1.5g/ml) is diluted with sufficient water to prepare 1L of 3M HNO3 solution
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. Suppose 246 g of Na metal is formed.
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 52.0 mL of 0.125 M HF and 78.0 mL of 0.0465 M NaOH
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