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How many atoms of neon occupy a volume of 14.3 L at STP?
a. 9.45 x 1023 atoms
b. 2.21 x 1025 atoms
c. 3.88 x 1024 atoms
d. 3.84 x 1023 atoms
e. 1.92 x 1025 atoms
When a container is filled with 3.00 mol of H2 , 2.00 mol of O2 , and 1.00 mol of N2 , the pressure in the container is 465 kPa. The partial pressure of O2 is ?
A physician wrote a prescription for Tylenol 325 mg/5mL with codeine 10 mg/5mL, 5mL three times a day for 4 days as needed for cough. How much Tylenol in milligrams is contained in a teaspoonful?
If 200 mL of 0.300 M Cr(NO3)3(aq) is added to 100 mL of 4.0 × 10^-4 M NaF(aq) at 25 degrees celcius, will a CrF3 precipitate form? For CrF3 in water at 25°C, Ksp = 6.6 × 10^-11.
If solar radiation is 1010 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
A compound with molecular formula C5H11N has no ? bonds. Every carbon atom is connected to exactly two hydrogen atoms.
Calculate the fraction of Fluorine atoms at 1000 K in each of the first three electronic levels based upon the following data
A 29.0-g sample of water at 290. K is mixed with 51.0 g water at 340. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
Furoic acid, HC5H3O3, has a Ka value of 6.76 10-4 at 25°C. Calculate the pH at 25°C for each of the following.
A piston has an external pressure of 11.0 atm . How much work has been done if the cylinder goes from a volume of 0.150 liters to 0.620 liters.
For the reaction A --> B, the activation energy is Ea = 125 kJ/mol and the heat of reaction, H = 50 kJ/mol. What is Ea for the reverse reaction in kJ/mol?
How would you make 2-methyl-1-phenyl-3-pentanone from the following available compounds ethanol, isopropyl alcohol, and toluene?
Important information about Identifying unknown substances, Compound A (C7H14O) burned with a yellow, nonsooty flame and did not decolorize a bromine-methylene chloride solution. It did give a positive 2,4-dinitrophenylhydrazine test
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