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Which substance contains molecules that will not form hydrogen bonds?
H2
HF
H20
NH3
Suppose a black-body chamber is constructed from 55.8 g (one mole) of iron and heated to 500 K. Classical theory and the observations of Dulong and Petit indicate that the total energy of vibration of iron atoms is 3RT per mole.
A sample of glucose, C6H12O6, contains 1.265 x 1021 carbon atoms. (a) How many atoms of hydrogen does it contain?
Phosphorus-32 has a half-life of 14.0days . Starting with 6.00g of 32p , how many grams of phosphorous will remain after 42.0days.
copper has two isotopes:cu-63 (abundance= 69.2%, mass= 62.930 amu) and cu-65 (abundance= 30.8% mass= 64.428 amu). calculate the (average) atomic mass of copper.
A gas occupying a volume of 695 mL at a pressure of 0.970 atm is allowed to expand at constant temperature until its pressure reaches 0.541 atm. What is its final volume?
What volume of 0.1000 M NaOH is required to titrate a 0.1000 M propionic acid solution, CH3CH2COOH, Ka = 1.3 x 10-5 , to the equivalence point?
I need help writing the balanced formula equation and the net ionic equation for the reaction of sodium hydroxide with hydrocholoric acid.
The density of an unknown metal is 8.94 g/cm^3 and its atomic radius is 0.126 nm. It has a face-centered cubic lattice. Find the atomic weight of this metal.?
What is the HCl concentration of 33.7 mL of 0.350 M NaOH is required to titrate a 30.0 mL sample of the acid?
how many milliliter of 0.165M KMnO4 are needed to react with 108.0ml of 0.165 M oxalic acid? How many milliliter of 0.165M oxalic acid are required to react with 108ml of 0.165M KMnO4
A gas cylinder at a pressure of 5.80 atm contains both helium and oxygen. The helium is at a pressure of 2.35 atm. What is partial pressure of oxygen?
At what total pressure of bismuth vapor is the partial pressure of Bi(g) just twice that of Bi2(g) at 1000 K? How many phases are present in the system for this situation?
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