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Question- What is the difference between the hydrogen-oxygen fuel cell and the proton exchange membrane fuel cell?
I need expert help to solve the above question. Show each and every step.
What is the composition in mole fractions of a solution that has a vapor pressure of 39 at 20 ? Express your answer using two significant figures.
what kind of subshell is being being filled in groups ia and iia? in groups iiia to viiia? in the transition elements?
Given the following substances in order of increasing acid strength,HOCl(aq)
calculate teh PH of 2.0m NaCN. what is the concentration of HCN in the solution?
Consider the following chemical equation. SO2(g) + O2(g) ? SO3(g) If 1.30 L of sulfur dioxide gas reactions with 3.25 L of oxygen gas, what is the volume of sulfur trioxide produced. Assume all gases are at the same temperature and pressure.
reaction between copper and silver nitrate2agno3 cu 2ag cuno32beaker-66.88gcopper- 7.44gsilver nitrate- 1.60gwater
Specified that the density of CaO(s) is 3.34 g/cm3 as well as that the length of an edge of a unit cell is 481 pm, find out how many formula units of CaO there are in a unit cell.
A pure silver ring contains 2.80 x 10^22 silver atoms. How many silver atoms does it contain. Please show your steps and solutions.
Calculate the mass of carbon dioxide released when 255 g of copper carbonate [molar mass = 123.5 g/mol] is heated (assuming that the reaction goes to completion). The molar mass of CO2 is 44.0 g/mol.
The combustion of one mole of benzene, C6H6, in oxygen releases 3268 kJ of heat. The products of the reaction are carbon dioxide and water.
what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm
The 1,3-diaxial interaction energy between H and a lone pair is negligible (~ 0 kcal/mol). What is the 1,3-diaxial interaction (in kcal/mol) between a CH3 and a p orbital
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