<span>Use the equation for Ka => 1.8 x 10 ^ (-4) = [H+][HCO2-}, these 2 concentrations are equal so, </span>
<span>1.8 x 10 ^ (-4) = [H+]^2 </span>
<span>and [H+] = 4.2 × 10^-3 M </span>
Answer:
radiant - chemical is the best answer
<span>the element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the ground state is s</span><span>odium</span>
Answer:
0.2 moles, assuming weight of dried salt
Explanation:
In order to determine the number of moles, we need to be aware of the mass of the substance in question.
Assuming the mass of the dehydrated
is 50g.
No. of moles = mass of substance/ molar mass of the substance.
=
= 0.2 moles moles.