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Explain what mass of CsBr must be added to 0.500L of water (d=100g/mL) to produce a 0.655m solution? Explain what are the mole fraction as well as mass percent of CsBr?
consider a hypothetical reaction in which a and b are reactants and c and d are products. if 15grams of a completely
A heliox deep-sea diving mixture contains 6.0% oxygen and 94.0% helium.What is the partial pressure of oxygen when this mixture is delivered at a total pressure of 9.0
If 88 J of heat are added to a pure gold coin with a mass of 20 g, what is its temperature change? Specific heat capacity of gold is 0.128 J/g'C
What are the favored geometrical arrangements for ABn molecules for which the Atom has 2,3,4,5 and 6 pairs of electrons in its valence shell?
We prepare a buffer by adding 0.4640 mol HNO3 to 0.5528 L of a solution containing 2.061 M trimethylamine [(CH3)3N, Kb = 6.500x10-5]. What is the pH of this buffer
For the subsequent reactions, State the balanced formula equation, complete ionic equation and net ionic equation. If no precipitate forms, write No reaction.
A vinegar sample contained 5.20 % acetic acid. How may mL of 0.450 N sodium hydroxide would be required to titrate 25.00 mL of the vinegar sample
An aqueous solution of Na2CO3 has a pH of 10.00. The CO3-2 (carbonate anion) is the conjugate base of its conjugate acid, HCO3- (bicarbonate anion). Write the net ionic equation for the reaction which shows why the solution has a basic pH.
Depict the skeletal structure of the major organic product resulting from the reaction of 2-methylbutane with Br2 in the presence of light and heat
A balloon containing 4.28 L of an unknown gas at 1.00 atm and 298 K has a mass of 16.90 g. The empty balloon has a mass of 2.24 g. What is the molar mass of the gas in the balloon
Calculate the mass (in grams) of the product formed when 3.95 of Ba completely reacts. Assume that there is more than enough of the other reactant
The density of a piece of ebony wood is 1.174 g/ml. What is the volume in quarts of a 2.1549lb piece of this ebony wood
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