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Which of the following has the smallest mass?
a. 3.50 x 1023 molecules of I2b. 85.0 g of Cl2c. 2.50 mol of F2d. 0.050 kg of Br2
A solution is made by dissolving 26.44 g of (NH4)2SO4 in enough H2O to make 50.75 mL of solution.What is the molar mass of (NH4)2SO4?
how much heat must be added to 36.2g sample of iron to increase its temperature by 250.0 degree C.
How many molecules of NO2 are produced when 5.38 mol of ammonia is completely reacted?
A solution is made by dissolving 3.14g of NaCl in 79.9mL of water. What is the concentration of sodium chloride in units of weight/volume percent?
how much of heat is gained by nickel when 500 g of nickel is warmed from 22.4 to 58.4C?
Compounds of Reactions, Explain why compound A reacts 9000 times faster than compound B at 0 degrees
A copper wire (density = 8.96 g/cm3) has a diameter of 0.44 mm. If a sample of this copper wire has a mass of 50. g, how long is the wire?
Wavelength of light required to break C-C, C-Cl, O=O bonds - Calculate the frequency and wavelength of the least energetic photon that can break an average C-C bond. In what region of the electromagnetic spectrum is this radiation?
The reaction of 2.30g N2 with excess H2 produces 2.00g NH3. The percent yield of this reaaction is?
what is the mass, in kilograms, of Avogadro's number of olympic shot put balls if each one has a mass of 16lb? How does this compare with the mass of Earth, 5.98x10^25 kg.
A compound is analyzed and found to contain 12.1% carbon, 16.2% oxygen, and 71.7% chlorine (by mass). Calculate the empirical formula of this compound.
Write the corresponding ionic and net ionic equations after Balancing these given equations
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