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Bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. If 10.0 g of calcium bromide are dissolved in water before electrolysis and if 1.75 L of gaseous bromine is produced at 70 °C and 80 kPa, what is the theoretical yield percentage? CaBr2 -> Ca + Br2
sample of sodium reacts with 0.497 kg of chlorine forming 819 g of sodium chloride, what mass of sodium reacted
A pound of coffee beans yields 30 cups of coffee (4 cups = 1 ). How many milliliters of coffee can be obtained from 1.0 of coffee beans.
how many grams of NO are required to produce 145 g of N2 in the following reaction? 4NH3+6NO-- 5N2+6H2O
A gas expands and does P-V work on the surroundings equal to 323 J. At the same time, it absorbs 145 J of heat from the surroundings.
The formal charge on the P atom is zero and It is best described with three resonance structures.
Calculate the expected change in temperature for 4.5 g of NH4NO3 dissolved in 100.0 mL of H2O. Assume that the calorimeter absorbs no heat.
When 0.097 moles of Magnesium hydroxide (Mg(OH)2) is dissolved in water, how many moles of ions are released into the solution ?
The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy
Determine what is the observed rate for the given reaction - empirically determined rate
If the chemist mistakenly makes 275 mL of solution instead of the 200 mL, what molar concentration of sodium nitrate will the chemist have actually prepared?
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
Calculate total and individual w, q, ΔU, ΔH, and ΔS of an Otto engine operating on stoichiometric ethanol - oxygen gas mixture, with cylinder volume of 1 l and compression ratio of 18:1.
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