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Describe how the chemical characteristics, production methods, uses, and associated unique hazards of sulfur can affect the safety of an environmental health and safety (EHS) and fire science (FS) professional.
Pepsin is the principal digestive enzyme of gastric juice. A 3.00g sample of pepsin is dissolved in enough water to make 10.0 mL of solution. The osmotic pressure of the solution is found to be 0.213 atm. What is the molecular weight of pepsin
Determine the empirical formula, molar mass, and molecular formula of the compound. Assume that the compound is a nonelectrolyte. (Type your answer using the format CO2 for CO2.)
Which of the following is an experimental fact that valence bond theory cannot explain, but molecular orbital theory can? the paramagnetism observed for O2 the N-N bond order in N2 the rotational barrier about the C-C bond in ethylene the existenc..
An equilibrium mixture of SO2, O2, and SO3 at a high temperature contains the gases at the following concentrations: [SO2] = 3.77 × 10-3 mol/L, [O2] = 4.30 × 10-3 mol/L, and [SO3] = 4.13 × 10-3 mol/L. Calculate the equilibrium constant, Kc, for the r..
how much energy in j is required to excite a hydrogen atom from its ground state to its first excited state? what is
A piece of metal with a mass of 169 g is placed in a 50 mL graduated cylinder. The water level rises from 20. mL to 38 mL. What is the density of the metal?
A crude product weighing 2.0g contains 0.4g of impurities and is therefore 80% pure. The crude product is recrystallized from 100ml of hot water
An amount of H2O vapor (gas) is condensed isothermally and reversibly to liquid water at 100ºC where it occupied a volume of 838 cm3. The standard enthalpy of vaporization of water at 100ºC is 40.66 kJ mol-1, the density of liquid water at 100ºC i..
A galvanic cell consists of a Mg electrode in a 1.0 M Mg(NO3)2 solution and a Ag electrode in a 1.0 M AgNO3 solution. Calculate the standard emf of this cell at 25 °C
Show how butyric acid can be synthesized from 1-propanol. Do not use a metalloorganic reagent. You will need more than one reaction. Draw beta-aminobutyraldehyde and give its systematic name.
The molecular orbital diagram CO in the course notes also applies to the following species
Which of the following are ways that catalysts can speed up reactions rates? You must check all answers that apply.
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