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Problem- A sample of carbon dioxide is contained in a 125.0 mL flask at 0.917 atm and 18.8 C. How many molecules of gas are in the sample?
Illustrate structures to prove your interpretation.
A certain noble gas compound contains 68.8% Kr and 31.2% F by mass. Its density at STP is 5.44g/L. What is the molecular formula of the compound
If a student determined that the circumference of a balloon filled by the boiling point of liquid nitrogen was 45 cm, what volume of nitrogen gas has been generated?
polonium - 210 has a half life of 138.4 days decaying by alpha emission. suppose the helium gas originating from the
The dipole moment of SO2 and CO2 are 5.37x10-30 C.m and zero, respectively. What can be said about the shapes of the two molecules.
The electrochemical processes that occur in the rate limiting step of the corrosion of iron (oxidation of iron) are represented by the half-reactions
Calculate the temperature in (K) where the specific heat of carbon dioxide is 0.93 kJ/kg*K if the temperature dependence of the specific heat is given by
Draw the product of the reaction of propanal with methanol containing dissolved hydrogen chloride. Draw the product of the reaction of propanal with sodium cyanide with addition of sulfuric acid
2-butene-1-thiols is one component of skunk spray. How whould you synthesize this substance from methyl 2-buenoate? From 1,3-butadiene
A weak acid HA (pKa=5.00) was titrated with 1.00M KOH. The acid solution has a volume of 100.00mL and a molarity of 0.100M. Find the pH at the following volumes of base added and make a graph of the pH versus Vb:Vb= 0, 1, 5, 9, 9.9, 10, 10.1, and ..
A biochemical engineer isolates a bacterial gene fragment and dissolves a 14.7 mg sample of the material in enough water to make 36.5 mL of solution. The osmotic pressure of the solution is 0.340 torr at 25°C.
a sample of gas in a21.5-l container at 45.0 degc is cooled at constant pressure to a temperature of-37.0 degc at
the initial volume of a gas cylinder is 750.0 ml. if the pressure of a gas inside the cylinder changes from 840.0 mmhg
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