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Describe six physical and six chemical changes. Explain why each is a physical or chemical change.
Calculate the amounts of reactants requires to produce 21.8 grams methyl benzoate assuming an 80% yield.
Describe how to prepare 0.200 L of 0.450 M HCl solution, starting with a 2.00 M HCl solution. What volume (in L) of the 2.00 M solution
A sample of oxygen is collected over water at a total pressure of 616.8 mmHg at 30 deg Celsius. the vapor pressure of water at 30 deg celsius is 31.8 mmHg. What is the partial pressure of the O2
Which compound in each pair has a higher melting point. explain why
When hydrochloric acid reacts with magnesium metal, hydrogen gas and aqueous magnesium chloride are formed.
Complete combustion of 3.40 of a hydrocarbon produced 10.4g of CO2 and 4.98g of h20. what is the emperical formula for the hydrocarbon
A certain first-order reaction (products) has a rate constant of 6.90×10-3 s^{-1} at 45 C. How many minutes does it take for the concentration of the reactant, [A], to drop to 6.25% of the original concentration?
Benzoic acid precipitated when the aqueous solution of sodium benzoate in beaker A was acidified. If benzoic acid failed to precipitate after acidification, how would you recover benzoic acid from beaker A
Calculate the moles of ammonia produced (e) calculate the partial pressures of all species in the system (f) the total pressure in the system
Imagine two solutions with the same concentration and the same boiling point, but one has benzene as the solvent and the other has carbon tetrachloride as the solvent. Determine that concentration and boiling point.
At a distance of 42 ft, an ionizing radiation source delivers 3.5 rem of radiation. How close could you get to the source and still have no biological effects
For each of the following methods for analyzing kinetic data, describe one advantage and disadvantage for each method: a. Assumption of pre-equilibrium conditions b. Using the integrated rate laws to fit data
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