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Determine the oxidation numbers of each elements in the following reaction, identify which of them are oxidized or reduced, if any: 2MnCO3(s)+O2(g) ---> 2MnO2(s)+2CO2(g)
the S for the system is predicted to be negative, so therefore the ?S for the surroundings must be positive to a greater extent so that the the net S for the universe is positive
Many homeowners treat their lawns with CaCO3(s) to reduce the acidity of the soil. Write a net ionic equation for the reaction of CaCO3(s) With a strong acid.
A 100.0 g sample of a metal M is burned in air to produce 103.7 g of its oxide with the formula M2O. What is the atomic mass of the metal?
Calculate the reaction Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) What mass of ZnCl2 (MW = 136.3 g/mol) can be prepared from the reaction of 3.27 grams of zinc
An astrology-loving friend hypothesizes that people born in that week like horror movies more than other genres of movies. You decide to use the scientific method to test this hypothesis.
we can see that the amount of heat released is 1679.5 \rm kJ per mole of methane, or 1679.5 \rm kJ per four moles of fluorine. How much heat is released per mole of fluorine
which solution can conduct an electrical current?
A 200. mL air sample collected at 35°C has a pressure of 550. torr. What pressure will the air exert if it is allowed to expand to 425 mL at 48°C?
Draw the structure for the following and report what conformation will be favored over the other cis-1,2-dimethylcyclohexane trans
Using Hard-Soft Acid-Base Theory, classify each of the species in the following equilibrium as hard or soft and indicate whether reactants or products will be favored
Why are active on-duty firefighters likely to experience the adverse health effects from inhaling 300 ppm of carbon monoxide faster than nonactive off-duty firefighters who inhale the same concentration of the same substance?
what is the concentration ratio of the free (and potentially toxic) Pb^2+(aq) in the blood to the much less toxic Pb^2+ -EDTA complex?
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