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5.00 grams of magnesium bromide are dissolved in two liters of water. What is the total number of moles of ions in the resulting solution?
A.).0699 mol
B.).0815 mol
C.).0543 mol
D.).0272 mol
E.) .0233 mol
what is the % mass of acetic acid in the vinegar? Hint: What is the mass percent of aceditc acid titrated and what is the definition of % mass?
the labels of bottles that contain barium hydroxide, hydrochloric acid and sodium carbonate had fallen off. When the contents of the bottle A were mixed with B's Contents, a white precipitate formed, A with C yielded a gas and B with C gave heat.
write the two resonance hybrids for the carbocation that would be formed by protonation at C-1 of 2-methyl-1,3-pentadiene. Without doing a calculation
Silver nitrate reacts with ferric chloride to give silver chloride a ferric nitrate. In a particular expriment, it was planned to mix a solution .
a 0.6407g sample containing only chloride and iodide ions gave a silver precipitate weighing 0.4430g. this precipitate
A flask contains 0.653g of acid and a few drops of phenolphthalene indicator dissolved in water. the buret contains 0.170M NaOH.
How does nuclear magnetic resonance imaging allow us to see inside human bodies? In what other ways do you think this technology could be used
Assuming that the reaction occurs at constant pressure, how much heat is released. substance - heat of formation kJ/mol C(s)- 718.4 CF4 (g)- (-679.9) CH4 (g)- (-74.8) H (g)- 217.94 HF (g)- (-268.61)
A graduated cylinder contains 152 mL of water. A 14.0 g piece of iron (density = 7.86 rm{g/cm^3}) and a 16.0 g piece of lead are added. What is the new water level in the cylinder?
calculate the volume of a chromium atom in microliters if the volume of a single chromium atomcr 8.10e-24 cm3.
Assume that sucrose is a molecular solid and does not ionize when it dissolves in water. Kf values are given here.
A stock solution has a concentration of 50%. What is the final concentration if we mix 1 part of the solution to 4 parts of water
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