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During an experiment: preparation of benzoic acid from benzonitrile what is the percent yield of benzoic acid: volume of benzonitirle: 2.0 mL and mass of benzoic acid obtained: 1.10 g
A nonelectrolyte solution adsorbs on an electrically neutral solid through a liquid. Two surfaces of this type are brought close to one another in the liquid such that they interact.
What is the equilibrium constant Kc for the reaction below. Assume temperature is 25oC. (Hint, Represent the reaction below as a sum of reactions and then combine the corresponding K values to obtain Kc for the reaction below.) HF(aq) +NH3(aq) N..
These air conditioners are recharged from stockpiled supplies of CFC-12. If each of the 100 million automobiles contains 1.1 kg of CFC-12 and leaks 25% of its CFC-12 into the atmosphere per year, how much Cl in kilograms is added to the atmosphere..
At a certain temperature and pressure 4.2 L of N2 reacts with 6.3 L of O2. If all the N2 and O2 are consumed, what volume of N2O3, at the same temperature and pressure, will be produced?
calculate the number of oxygen molecules released when 1g of silver oxide is broken down.
Arrange these compounds in order of increasing boiling point and explain your reasoning. (assume similar mass) CH3OCH3 CH3CH2CH3 CH3CH2OH 2. Which of the following compounds would have the greater viscosity?
When coal is burned, the sulfur present in coal is converted to sulfur dioxide (SO2), which is responsible for the acid rain phenomenon. S(s) + O2(g) ? SO2(g) If 1.64 kg of S are reacted with oxygen, calculate the volume of SO2 gas (in mL) formed ..
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
Does a chemical change occur when you cook an egg? Why or why not? When you fry an egg, it becomes a solid, the heat makes it smoke, and the color changes from clear and yellow to all yellow.
100 million automobiles, each containing kg of CFC-12 (CF2Cl2). If each of them releases 25% of its CFC-12 into the atmosphere per year how much cl in kilograms is added to the atmosphere
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
What is the buffer capacity of the resulting solution. (The buffer capacity is the number of moles of NaOH that must be added to 1.0 L of solution to raise the pH by one unit)
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