Oxygen gas at a given temperature and pressure
Suppose a 5 liter sample of oxygen gas at a given temperature and pressure contains 1.08x10^23 molecules. how many molecules would be contained in each of the following at the same temperature and pressure?
a. 5 liters of hydrogen
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When α-D-xylofuranose is treated with excess methyl iodide in the presence of Ag2O, how many equivalents of methyl iodide react with each equivalent of the furanose?
a new solid octahedral complex has been synthesis containing only chloride ans ammonia ligands. when 9.64 *10^-4 moles of this complex is dissolved into 425 ml of water , you find out that 19.22 ml of .1000 HCl is needed to reach the titration end
A gas is enclosed in a cylinder fitted with a piston. The volume of the gas is 2.00 L at 1.00 atm pressure. The piston is moved to increase the volume to 6.00 L.
How much energy (in kilojoules) is required to convert 205 of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 ? if heat of vaporazation is 26.5
If 3.30 moles of ethane, C2H6 undergo combustion,according to the unbalanced equation C2H6+O2--> CO2+H2O, how many moles of oxygen are required?
Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. Suppose that the volume of a particular sample of gas is 8.70 l at 895 torr and 25 Celsius. How many grams of Cl2 are in the sample? what volume will the
what mass of limestone must have dissolved if 3.05x10^10 kg of calcium hydrogen carbonate was produced?
A 0.100L sample of a solution containing an unknown concentration of sodium hydroxide requires 22.7 ml of 1.00 M sulfuric acid to completely neutralize. What is the concentration of the sodium hydroxide solution?
HCL acid solution is standardized using 0.502g of sodium carbonate. Find the molarity of the acid if 30.5mL are required for the titration.
Calculate the energy of the lowest energy photon that B4+ could absorb, if it is in its ground state. In no more than a couple of sentences, explain the circumstances in which some hydrogen-like boron ions can absorb photons of even lo
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