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Although coals is a complex mixture of substances, its elemntal composition can be approximated by the formula C135H96O9NS. Using this formula calculate the mass of carbon in 1.00 x 10^9 kg of coal
What is the [H3O+] in a buffer that consists of 0.30 M HCOOH and 0.20 M HCOONa? Ka=1.7x10^-4
How long will it take in minutes until 42% of the original NO2 remains if the rate constant is 0.0066L/(mol sec) and the initial amount of NO2 is 0.45 mol/L?
If 24 g of SiO2 is reacted with an excess of carbon, what volume of gaseous carbon monoxide will be produced at a temperature of 17°C and a pressure of 735 mm Hg?
The synthesis of Amyl acetate by alcohol and anhydride, there are some chemicals be provided: Potassium carbonate, Calcium carbonate, Sodium sulfate
Assuming that 0.5 grams of a 1.0 gram sample is CaCO3, what should the concentration of HCl (M) be if you want to use 25.0 mL for the titration
What is the pH of a 0.15 M solution of the weak base ammonia (NH3)? The Ka of the conjugate acid is (NH4) is 5.6e-10.
The LiAlH4 reaction with ketones and that you must use a anhydrous aprotic solvent with it because of how violent it reacts with water and alcohols, What WOULD actually happen if it reacted with an alcohol? for instance butan-1-ol? Since this isnt..
Which of the following substances are largely ionic, and which are covalent. (a) HF (b) HI (C) PbCl2 (d) BBr3 (e) NaOH (f) CH3Li
A container consists of CO2 gas at a temperature of 15 C and at a pressure of .990 atmospheres. The volume of the container is 500 mL. How many grams of CO2 would be in the container? (1 liter equals 1000 milliliters.)
A mutant hemoglobin has His146 of the beta chain replaced with a threonine residue. predict what the consequence of this mutation might be. specifically
Calculate the entropy change for 0.5 mol of an ideal gas confined in 2.0L, which expands when the stopcock is opened, and the gas comes in contact
A 2.78 L sample of hydrogen chloride (HCl) gas at 2.61 atm and 28°C is completely dissolved in 651 mL of water to form hydrochloric acid solution. Calculate the molarity of the acid solution. Assume no change in volume.
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