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Under appropriate experimental conditions, H2 and CO undergo a combination reaction to form CH3OH. The following drawing represents a sample of H2. Make a corresponding drawing of the CO needed to react completely with the H2. How did you arrive at the number of CO molecules in your drawing?
How many grams of caffeine (C8H10N4O2) are present in one cup of coffee that contains 8.98 × 1021 caffeine molecules?
what is the chemical formula of a homonuclear diatomic gas if it has a pressure of 1.40 atm and a density of 1.82 gl at
What is the pH at the equivalence point for a titration of 35ml of 0.250 M acetic acid with 0.350 M Ba(OH)2? Ka for acetic acid is 1.8 x 10^-5
What is the enthalpy of reaction per mole of oxygen bound. The heat capacity of the solution may be assumed to be 4.18J/k cm3
A large scale polycondensation reaction of a diol and a diacid is performed at 200 C. At various intervals small samples are removed, introduced into tared conical flasks, quenched in a dri ice/acetone, weighed, dissolved and titrated with a stand..
Compute the number of moles of sugar that is present in397.60 grams of 5% by weight sugar solution. The molar mass of sugar is 180g/mole
a sample of the active ingredient in a nutritional mineral supplement was found to contain 0.0392 moles of iron 0.0393
State how much oxalate unknown should the student weigh out in order to use 35.0mL of permanganate solution?
the vapor pressure of ch3 coch3 propanone or acetone is 67 torr at 0 ? c and 222 torr at 25 ?c. what is the standard
What is the pH of a soft drink in which the major buffer ingredients are 6.6 g of NaH2 PO4 and 8.0 g of Na2HPO4 per 355 mL of solution
solution of water (K_f}=1.86 C/m) and glucose freezes at - 2.35 C. What is the molal concentration of glucose in this solution? Assume that the freezing point of pure water is 0.00 C.
If oxygen gas were collected over water at 295K and the total pressure of the wet gas were 710 mm Hg, what would be the partial pressure of the oxygen
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