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A. What is the mole fraction of O2 in a mixture of 5.09 g of O2 in a mixture of 5.09 g of O2 7.19 g of N2 and 1.32 g of H2
B. What is the mole fraction of N2 in a mixture of 5.09 g of O2 7.19g of N2 and 1.32 g of H2
C. What is the mole fraction of H2 in a mixture of 5.09 g of O27.19 g of N2 and 1.32 of H2 Answers a-c in percent
D. What is the partial pressure in atm of O2 of this mixture if it is held in 12.60-L vessel at 15 degrees celcius
E. What is the partial pressure in atm of N2 of ths mixture if it is held in 12.60-L vessel at 15 degrees celcius
F. What is the partial pressure in atm of H2 of this mixture if it is held in a 12.60 -L vesssel at 15 degrees celcius
For the reaction: H2SO4(aq) + 2 KOH(aq) --> K2SO4(aq) + 2 H2O To find the concentration of H2SO4, a 25.00 mL sample was titrated with 0.8752 M KOH. It took 31.79 mL of KOH to reach the endpoint of the reaction. What is the concentration of the H2S..
If a 220 mg piece of gold (density =19.32 g/cm^3) is hammered into a sheet measuring 2.3x1.0 ft, what is the average thickness of the sheet in meters?
Rubidium has two stable isotopes, 85Rb and 87Rb. The 87Rb isotope has a natural abundance of 27.83% and an atomic mass of 86.909183 amu. Calculate the percent abundance and atomic mass of the 85Rb isotope.
Construct flow diagrams to show how to separate each of the following pairs of water-insoluble compounds
The initial mass of the the crude ether was 141 mg. The mass after recrystallization was 121 mg. Calculate the percent recovery from recrystallization.
Determine the mass of lithium hydroxide producecd when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH
Suppose that 2.00mL of isopently alcohol was reacted with excess acetic acid and that 2.00g of isopentyl acetate was obtained as product. Calculate the percentage yield.
Write a balanced net ionic equation for the reaction of each of the following aqueous solutions with H+ ions.A) Sodium fluoride
Calculate the percent composition by mass of C, H, and O in cinnamic alcohol. How many molecules of cinnamic alcohol are contained in a sample of mass 0.469g.
Many drugs are high-molecular-weight amines that are weak bases. Such amines are not soluble in water, which limits the ways they can be administered and means that they are not soluble in body fluids such as blood plasma and cerebrospinal fluid
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO
A strong broad IR stretching band at about 3500 Cm-1 along with several narrow aromatic bands around 1600 and 1500 Cm-1 suggests the presence of what class compound?
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