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How many formula units of barium fluoride (BaF2) are in 1.63g of BaF2
How many formula units of aluminum chloride (AlCl3) are in 0.582g of AlCl3
How many grams of caffeine (C8H10N4O2) contain 2.53×10^24 molecules of caffeine?
How many atoms of aluminum are in 0.250g of aluminum?
How many grams of potassium (K) contain 5.11×10^22 atoms of potassium?
Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). Compute for the combustion of 1mol of B5H9.
Explain why hydrogen fluoride (HF) has a higher boiling temperature that Hydrogen chloride(HCl) even though Hf has a lower molecular weight.
Complete the following problems using dimensional analysis. Balance all of the equations that need to be balanced. The answers are given in parenthesis at the end of each problem.
What mass of melamine, C3N3(NH2)3, will be obtained from 101.5 kg of urea,CO(NH2)2, if the yield of the overall reaction is 72.0%?
the osmotic pressure at 20.0 degrees C is 3.62x 10^-3 atm. What is the molar mass of the protein hemoglobin?
The gas-phase dipole moment of the hydroxyl radical
1. calcium carbonate and sand mixture with weight of 4 grams is reacted with excees of hcl results in the production of
(A) How many grams of solid Pb(IO3)2 can be dissolved in 950.0 mL of a 0.01 M Pb(NO3)2 solution. (B) How many g of solid Pb(IO3)2 can be dissolved in 950mL of pure water if the Ksp= 3.5E-13
The difference between a law and a theory is the difference between what and why. Explain.
solutions of HCl and NaOH and must determine their concentrations. You use 33.6 mL of NaOH to titrate 100. mL of HCl and 24.0 mL of NaOH to titrate 50.0 mL of 0.0838 M H2SO4. Find the unknown concentrations.
Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
Consider the process shown in Fig. Mud is brought into a storage tank, T-77, from which it is pumped to two filters. The level in the tank is controlled.
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