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1. The chemical reaction is given CaCN2 + 3 H2O → CaCO3 + 2 NH3 follow this equation and calculate how much CaCN2 is required to form 12.6 moles of ammonia? Given that the percent yield is 65.8%?
2. When 42.52 g of CH3CH2OH (ethanol) is combined to 125g of H2O (water) then find out what will be the mole fraction of ethanol?
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.
At 25 degree celcius ,the second order reaction NOCL(g) - NO (g) + 1/2 CL2 (g) is 50 % complete after 5.82 hours when the initial concentration of Nitrosyl chloride is 4.46 ml/L.what time will it take for the reaction to be 75 % complete.
What happened when 6.0M HCl was added to the contents of the tube in 7a above?
Find the pH solution & Hydronium ion concentration and What is the pH of a solution of 0.17 M acid and 0.81 M of its conjugate base if the pKa = 8.62?
The bond distance and dipole moment calculated for the highly reactive gas phase OH molecule are 0.98Ao and 1.78D, respectively. Compute the effective charges on the O and H atoms of the OH molecule (in units of the electronic charges).
How much would an empty volumetric flask, (weighing 27.16 grams, has a volume of 100.4 cm3 ) weigh when filled with bromine, an element that has a density of 3.1028 g/cm3.
What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?
Chemical Kinetics - Show that only the reactants of the slow step of a reaction are found in the rate law of the reaction - which of the two steps is slower and which substance (if any) is probably an unstable intermediate?
The _______ of a titration occurs when the indicator changes color.
Using a sample of 0.0355 gram of an unknown molecular compound is dissolved in 1.000 g of liquid camphor at 200.0°C. Calculate the molar mass of the unknown compound if the camphor freezes at 157.7°C upon cooling.
what would be the atmospheric pressure of MTBE in Pa If this sample were at equilibrium with atmospheric MTBE? KH = 1.7 M/atm.
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