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Problem- How many moles of copper are there in 128 grams of copper (for copper, 1 mole +63.546 grams)?
I need proficient help to working out this problem
A sample of mercury (II) oxide is placed in a 10.00 L evacuated container and heated until it decomposes entirely to mercury metal and oxygen gas. The container is then cooled to 22.5 degress celcius.
Calculate the mass percent of a solution that is prepared by adding 61.4 g of rm NaOH to 413 g of {rm H_2O}.
Calculate the free energy change for the combustion of methane at 250oC. Assume that all reactants and products are gases and that the pressures of the various gases of interest are: methane = 0.56 atm, oxygen = 0.45 atm, carbon dioxide = 2.10 atm..
you pour 1 liter of water into a thermally insulated electrically heated teapot which you then plug in. how long will
Molten magnesium chloride is prepared as a working fluid for a solar power tower process in a smelting tank operating at 1000 °C. Solid MgCl2 rocks are pre-heated to 714° C and fed into the tank at a rate of 0.5 metric tons/hr. At the top of the t..
how do you calculate the hydrogen ion concentration in moles per liter for a solution with at pH value of 11.21? Need the steps please.
A student calculated an averagelue of 4289 for a siyle's law constant k. Based on the number ofgnificant figures in the measured thantities, how many significant figures should Bois result have after proper qu rounding
Problem- A rigid sealed steel container contains only acetone, in both the vapor and liquid phase. The temperature is 30 C. The mass of acetone in the system is 500 g . The volume in the system is 1.00 L.
Assuming that the copper and lead are pure, determine the relative amounts of each kind of BB. A bag contains a mixture of copper and lead BBs
The osmotic pressure,pie , of a solution of glucose is 83.1atm . Find the molarity of the solution at 298k .
If 5.28 x 10^3 kg each of NH3, O2, and CH4 are reacted, what mass of HCN and of H2O will be produced, assuming 100% yield?
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to man made factor like pollution.
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