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A hydrocarbon is burnt completely in excess oxygen. it is found that 5.0g of the hydrocarbon gives 14.6g of carbon dioxide and 9.0g of water. knowing that the molecular mass of the hydrocarbon is 30.0 determine the molecular formular of the compound.
Though i have seen the answer but i dont know how to get there. I want the workings, that is how to arrive at the answer
Calculate the pH of the buffer prepared by mixing 35.0mL of 0.15M HC2H3O2 with a 25.0mL of 0.10M NaC2H3O2. K(a) for HC2H3O2 = 1.8 x 10^-5
Problem- Cesium metal is frequently used in photoelectric cells because the amount of energy necessary to eject electrons from a cesium surface is relatively small -only 188 kJ/mol. What wavelength of light (in nanometers) does this correspond to
It takes 24.0 min for the concentration of a reactant in a second-order reaction to drop from 0.40 M to 0.30 M. What is the rate constant (in min-1) for this reaction
a colorless liquid that is commonly known as grain alcohol, is 0.789 g/mL. Calculate the mass of 17.4 mL of the liquid.
Arrange the following solutions in order of increasing pH(from lowest to highest) and explain your reasoning. Assume each solution has a concentration of 0.10mol L-1
at 665 degc keq is 0.234 for the following reaction4as bg ?2cs dgif b gas at 0.221 bar is injected into a container
what is the ph of a solution prepared by mixing 50.00 ml of 0.10 m methylamine ch3nh2 with 20.00 ml of 0.10 m
A voltaic cell consists of a strip of lead metal in a solution of Pb(NO3)2 in one beaker, and in the other beaker a platinum electrode immersed in an NaCl solution, with Cl2 gas bubbled around the electrode. The two beakers are connected with a sa..
Separat the components of a water-insoluble mixture of barium sulfate (BaSO4) and nickel (ii) carbonate (NiCO3). Chemicals provied to aid in the separation and recovery of the 2 component mixturee are HCl(aq) and K2CO3(aq)
The Keq of a biochemical reaction is 19.0. Calculate the standard free energy change associated with this reaction. (R=1.987, T=298, Lnx=2.303 log10X).
If 36 L of Hydrogen at 44 C and 94 kPa react with sufficient oxygen to produce water, what mass of water can be produced?
what will the concentration be after 9.00 minutes? Part B A zero-order reaction has a constant rate of 1.30×10^?4 M/s. If after 60.0 seconds the concentration has dropped to 8.00×10^?2 M, what was the initial concentration?
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