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Show that steel consisting of 100% cementite corresponds to a carbon concentration of 6.7%. The molecular weight of iron and carbon are 55.847 and 12.011 respectively.
How many L of O2 gas at STP, are needed to react with 15.0 g of Na using the following chemical reaction: 2Na(s) + O2(g) => 2NaO(s)?
A laboratory method of preparing oxygen gas involves decomposition of solid potassium chlorate. The products of the reaction are solid potassium chloride and oxygen gas.
Liquid helium at 4.20 K has a density of 0.147 g/mL. Suppose that a 1.50 L metal bottle at 110 K contains air at 3.0 atm pressure. If 50.0 mL of liquid helium are added to the bottle
calculate the amount of sodium nitrate in mg in one liter if 3.8mg of nitrate was detected in one liter of water.
EXPLAIN why at low temperatures, e.g. -80 °C, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-butene. c) EXPLAIN why at +80 °C when HCl is added to 1,3-butediene the major product is 1-chloro-2-butene.
a voltaic cell is based on the reactionsns i2 s --gt sn2 aq 2i- aq. under standard conditions what is the maximum
What is the mass of platinum required to solidify all the gold? What is the change in entropy of the system? Cp(Pt, s) = 25.86J/mol*K ?H?fus(Au, s l) = 12550J/mol
A 370. 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 49°C.
if 0.176 moles of mg have combined with 0.220 moles of o what is the empirical formula of the
How much heat is realesed at constant pressure if a 10.0-L tank containing 87.0atm of hydrogen sulfide gas condenses at its boiling point of -60.0 Celsiuse?
many gases are shipped in high-pressure containers. consider a steel tank whose volume is 65.0l and which contains o2
Based on the given chemical equation, how many grams of aluminum are needed to react with 0.6 moles of hydrochloric acid? Al + HCl yields AlCl3 + H2
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