Using pH to determine [H+]
10^-pH= 10^-2.45 = 2.1 x 10^-3
<span>
Now,
Ka=[H=][A-]/[HA] </span>
<span>So,
(2.1 x 10^-3)^2/0.0136 - (2.1 x 10^-3) </span>
<span>Ka=2.5 x 10^4</span>
Use dimensional analysis to solve problems like these.
1 mol C12H22O11 * 12 mol C atoms / 1 mol C12H22O11 = 12 mol of C atoms
Alternatively, you can also think of Sucrose as a molecule with 12 atoms of Carbon, 22 atoms of Hydrogen, and 11 atoms of Oxygen. Each of the atoms represent one mole and since you have 12 Carbon atoms, it would equal to 12 moles of Carbon atoms.
Answer:
The law of conservation of energystates that matter cannot be created or destroyed. Whether a chemical reaction absorbs or releases energy,there is no overall change in the amount of energy during the reaction.
B.
When electricians get their license, they are only licensed to install parallel circuits. Most electricians aren't certified to install series circuits.