50 mL of 2.0 M of and 25 mL of 2.0 M of were mixed to make a solution
Final volume of the solution after dilution = 200 mL (given)
Final concentration of , [] =
Final concentration of , [] =
Using Hasselbach- Henderson equation:
Substituting the values:
Hence, the of the final solution is 7.15.
Answer:
Molecular formula, C8H16O4; empirical formula, C2H4O
Explanation:
When there is just one atom of an element in a molecule, no subscript is used in the chemical formula.
Answer:
I>Sn>Xe
Explanation:
Electron affinity refers to the ability of an atom to accept electron(s) and form a negative ion.
We know that electron affinity is a periodic trend that increases across the period but decreases down the group.
Hence the, electron affinity of iodine is far higher than that of tin. However, xenon is a noble gas and does not accept electrons. Hence, it has an electron affinity of 0 KJ/mol.
Answer:
12.3 mo
Explanation:
Given the following balanced chemical equation, 2 NaClO3 → 2 NaCl + 3 O2, how many moles of O2 will be produced from 8.21 moles of NaClO3?
for every 2 moles of NaClO3, you produce 3 moles of O2.
so for O2 you produce 3/2 the moles of NaClO3
so 8.21 moles of NaClO3 will produce 8.21 X 3/2 moles of O2
=12.3 mole