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A gas has a pressure of 780 mmHg and contains 3.45 moles. If you take away 1.45 moles what would be the new pressure?
Question- How do you know which are the valence electrons in the electron configuration of an element
Determine the concentration of the KOH solution when 35.0 mL of 6.00 mol/L KOH is diluted to 125 mL.
Compute the volume (in mL) of a 0.410 M KOH solution that must be added to 4.250 g of HEPES (MW=238.306 g/mol, pKa = 7.56) to give a pH of 7.36.
1. what is the greenhouse effect?2. how does the excess co2 gas in the atmosphere cause the greenhouse effect?3. what
The mass of a cube of iron is 252 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
BOS 3640 CHEMISTRY OF HAZARDOUS MATERIALS The DOT regulation at 49 C.F.R. §177.835(a) requires shippers and carriers to load and unload explosives from a motor vehicle only when the engine is not operating. What is the most likely reason DOT prohibit..
explain the advantages and disadvantages of using high gold content bonding alloys when constructing bonded porcelain
if 10.7 ml of a 0110 m naoh is required to reach the first equivalence point of a solution of citric acid how many ml
what is the chemical calculation to figure out the following: calculate the new molarity if the following dilution is made (assuming the volumes are additive): 25.0 mL of water is added to 10.0 mL of 0.251 M CaCl2 solution.
a 51.0 g sample of ethylene glycol hoch2ch2oh is dissolved in 540.0 g of water. the vapor pressure of water at 32degc
assuming that the atomspher is locally isothermal, the air density variation with pressure is giving by B=B0*(P/P0) where B is density ,p is pressure , and the subscript 0 denotes conditions at the earth's surface.
what volume of ethylene glycol, a nonelectrolyte, must be added to 15.0 Liters of water to produce an antifreeze solution with a freezing point of - 30 degrees celcius? what is the boiling point of the solution?
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