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Which of the following is a neutralization reaction?
Choose one answer.
a. H2O + SO3 → H2SO4 b. 2NO2 → 2NO + O2 c. 4Na + O2 → 2Na2O d. HNO3 + KOH → H2O + KNO3 e. KCl + NaNO3 → KNO3 + NaCl
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
if the initial water level in the graduated cylinder is 21.2 ml and the level rises to 27.7 ml after the object is placed in the cylinder, what is the volume of the object?
Calculate the percent yield of if the reaction produces 169g of C2H5Cl .
Two students weighed a 125-ml beaker that had a mass of 80.562g on a calibrated top-loading balance. Each student used their own top-loading balance, recorded three mass readings for the beaker
A 27.0-gram sample of an unknown hydrocarbon was burned in excess oxygen to form 88.0 grams of carbon dioxide and 27.0 grams of water. What is a possible molecular formula of the hydrocarbon?
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 400.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid.
What are the concentrations of each of the ions in a saturated solution of PbBr2, given the Ksp of PbBr2 is 2.1 x 10^-6?
Determine the molarity of the NaOH(sodium hydroxide) solution. In an acid-base titration, 22.13 mL of a sodium hydroxide solution are required to neutralize 24.65 mL of the potassium hydrogen phthalate solution?
The other criterion is very basic and relates to whether simple or fractional is selected
when hydrochloric acid comes in contact with potassium permanganate, what dangerous chemical is released?
The peptide Special-K forms an ?-helix that is broken at high temperatures. The fraction of peptide in the ?-helical form (fraction = moles a-helical peptide/total moles of peptide)
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