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The diet candy bar you so love to eat contains the following: 16 grams of carbohydrates; 7 grams of protein; and 30 grams of lipids (fats). How many total calories do you consume from these three organic substances when you eat 1 candy bar 3 times a day?
Calculate the work done in joules, when 4.5 L of argon expands to 11 L at constant temperature against an external pressure 545 torr.
A quantity of N2 occupies 62.2 L at a particular temperature and pressure. Its density is 0.900 g/L. How many moles of N2 are in the container?
A compound has a C nmr spectrum with peaks at 7.4, 28.9, 36.4, and 208.8. The H nmr has peaks at 1.05 (t, .6), 2.13 (s, .58), 2.47 (q, .39). What is the compound?
What is the entropy change if two mole of liquid water is heated from 20 C to 100 C under constant pressure? Cp=75.5 J/mol*K over this temperature interval
An automobile engine requires a carburetor or fuel inector to mix the fuel with air. The fuel and air must be mixed in a particlar ratio to achieve maximum efficiency in the combustion of the fuel.
The overall reaction order for an elementary reaction always equals its molecularity however the overall reaction rate for multistep reaction can only be determined based on experimental data
Use the solution pH to calculate the concentration of hydronium ion present
As of the writing of this text, EPA standards limit atmospheric ozone levels in urban environments to 84ppb. How many moles of ozone would there be in the air above Los Angeles County.
Consider a light-sensative reaction. What energy in joules per photon, is needed to drive the reaction if delta H of the reaction is equal to 793 kJ/mol. (Remember that there are Avogadro's number of photons per mole of photons.)
Two students weighed a 125-ml beaker that had a mass of 80.562g on a calibrated top-loading balance. Each student used their own top-loading balance, recorded three mass readings for the beaker
What is the percent yield of a reaction in which 111.6 g phosphorus trichloride reacts with excess water to form 60.8 g HCl and aqueous phosphorous acid (H3PO3)?
At 105 °C, the reaction 2NO2(g) ? N2O4(g) has Kp = 0.054. What is the value of Kc at this temperature?
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