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What is the Volume of the water vapour if 3.2 grams of water vapour is observed at 22 C
and 125 kPa. ? R = 8.31 L kPa/ K mol
If you had a stock solution of 15 M sulfuric acid, what should you do if you wanted to make1.0 litre of 5.0 M sulfuric acid from this stock solution?
I need to make 300 mL a 0.123 mol/L solution of HCl. The only solution of HCl I have in the cupboard is 12.0 mol/L. How can I make the solution I want?
Explain how you would make 250 mL of a 0.200 mol/L solution of copper sulfate from the
solid compound. (3 marks)
A chemist prepares a sample of hydrogen bromide and finds that it occupies 216 ml at 64 c and 535 torr. what volume would it occupy at0 c at the same pressure? answer in units of ml
Give at least 2 examples of covalent compounds that can be found in nature or used in everyday life .Yhey must include the following information:
a.Brief information about the use of the covalent compound
b.chemical formula and chemical name of the covalent compound
c.Structure of the compound
At equilibrium, the concentration in moles/L of N2, H2, and NH3 at 300 C are 0.25, 0.15, and 0.90, respectively. Find K, for the reaction
The reaction 2 NO(g) ---- N2(g)+O2(g) has a Kc value of 2400 at 2000 K. If 0.850 M each of N2 and O2 are initially present in a 3.00-L vessel, calculate the equilibrium of No, N2 and O2
- Calculate the concentration of OH - ions in a 1.4 x 10-3 M HCl solution.
- Calculate the pH of the buffer system made up of 0.15 M NH3 and 0.35 M NH4Cl.
Is the ionization energy of phosphorus greater than the ionization energy of sulfur? If so, is the electron affinity of phosphorus also greater than the electron affinity of sulfur? Thank you.
