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Calculate the molality of a solution made by dissolving 34.0 g of NH3 in 2.00 x 103 mL of water (MMNH3 = 17.04 g/mol, dH2O = 1.00 g/mL
As you may well know, placing metal objects inside a microwave oven can generate sparks. Two of your friends are arguing over the cause of the sparking, with one stating that the microwaves "herd" electrons into "pointy" areas of the metal object,
the Brackett series of hydrogen has a wavelength of 2626 nm. From what state did the electron originate
A solution of M(NO3)2 is electrolyzed. When a constant current of 2.50 amperes is applied for 35.0 minutes, 3.06 grams of the metal M is deposited. calculate the molar mass of M and identify the metal
What would be a beneficial way to study and memorize all chemistry based conversions
Considerning the electrons in the shells, subshells, and orbitals of an atom, state how many electrons have: of electrons
In the following conditions calculate the moles of hydrogen and the pressure in each flask where the volume is negligible. Each flask is originally 275K with .455 mols of hydrogen gas and .7atm of pressure. Then one flask is heated to 500K while t..
74.0 mL of a 1.80 M solution is diluted to a volume of 268 mL. A 134-mL portion of that solution is diluted using 179 mL of water. What is the final concentration.
If you mix K2HPO4 with NaAc (sodium acetate), what is the net ionic equation for the (potential) H+ transfer? Will it take place spontaneously
a sample of 36.0 mg of an organic compound that has molar mass 84.0 gmol is dissolved in 10.0 ml of h2o. solution is
a) For a heteronuclear diatomic molecule, draw an energy level diagram showing the four lowest rotational energy levels. Indicate the energy of each level in terms of B. Indicate all possible light absorption transitions.
A gas occupies 22.4 L at STP and 14.5 L at 100°C and 2.00 atm pressure. How many moles of gas did the system gain or lose?
Naturally occurring thallium has two isotopes, thallium-203 (202.9723442 amu) and thallium-205 (204.9744275 amu). The atomic mass of thallium is 204.38 amu. What is the percent of thallium-205
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