Assignment:
Q1. What is the volume of 1.20 x 1022 molecules of nitric oxide gas, NO, at STP?
Q2. What is the mass of sodium phosphate (163.94 g/mol) that yields 1.00 g of calcium phosphate (310.18 g/mol) precipitate?
__CaCl2(s) + __Na3PO4(aq) → __Ca3(PO4)2(s) + __NaCl(aq)
Q3. How many moles of calcium metal react to yield 0.500 ml of of hydrogen gas? __Ca(s) + __H2O(ml) → Ca(OH)2(aq) + __H2(g)
Q4. How many moles of ammonia contain 1.51 x 1024 NH3 molecules?
Q5. What is the [OH-] in a seawater sample if the pH is 8.65?
Q6. If the hydrogen ion concentration of a 0.100 M HC3H5O3 solution is 0.0038 M, what is the ionization constant for lactic acid?
Provide complete and step by step solution for the question and show calculations and use formulas.