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What is the number of bonding electron pairs on the central atom of SiH4? What is the number of nonbonding electron pairs on the central atom of SiH4? What is the Molecular Geometry of SiH4?
Methanol (CH3OH) reacts with oxygen to produce carbon dioxide and water. How many grams of oxygen will be required to react completely with 200 grams of CH3OH? What mass of water will be produced during the reaction?
using the information below calculate the mass of benzene in each phase and find the total mass of benzene at the site.
The MnO4(-) is often used to analyze for the Fe(2+) content of an aqueous solution via the reaction MnO4(-) + Fe(2+) ---> Fe(3+) + Mn(2+) in acidic solution. What is the ratio of Fe(2+):MnO4(-) in the balanced equation
a beaker of an acetic acid with 1.00times102ml buffer with a ph of 5.000 is sitting on a bench top. it is found that
How many molecules of sucrose (table sugar), C12H22O11, dissolved in 450.0 g of water are needed to make a 1.30 m solution?
Calculate the molar mass of an unknown molecular compound mixed with solid camphor, C10H6O, heated and then cooled giving the following data. Show all steps in calculation.
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
The student weighed out .110 grams of sample for all 3 trials. The student averaged 6.40mL of Na2S2O3 for all 3 titrations.
Calculate the concentrations of all species in a 1.00 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
a 30 g sample of water at 280 k is mixed with 50 g of water at 330 k. calculate the final temperature of the mixture
microwave ovens use microwave radiation to heat food. the energy of the microwaves is absorbed by water molecules in
a solution is prepared by mixing 50.0 ml of 0.50 m pbno32 with 50.0 ml of 1.7 m kcl. calculate the concentrations of
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