How many total iron atoms and oxygen molecules combined
Three atoms of iron (Fe) are to be combined with four molecules of oxygen (O2). How many total iron atoms and oxygen molecules will be combined during the formation of Fe3O4?
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an electric power station annually burns 3.1 X 10^7 kg of coal containing 2.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP?
Why does adding 6 M HCI to the yellow solution of methyl orange tend to cause the color to change to red? (Note that in solution HCI exists as H+ and Cl ions.)
A 5.50 bullet is fired horizontally into a 1.30 wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.200. The bullet remains embedded in the block, which is observed to slide 0.200 along
Flourine gas reacts with ammonia gas to form N2F4 and HF. How many grams of NH3 are required to form 130 grams of HF?
What relationship exist between one period of life and development in another period? Please be sure to provide at least 2 examples.
Calculate the pH of 0.45 M K2CO3. What are the concentrations of HCO3-, and H2CO3 in the solution? H2CO3 is a diprotic acid with Ka1 = 4.3 x 10-7 and Ka2 = 4.7 x 10-11.
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.2 mT. If the speed of the electron is 1.3 107 m/s, determine the following. (a) the radius of the circular path
How do innate and environmental factors interact? Please be sure to provide at least 2 examples.
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