PLEASEE HELP 6. Ten grams of lithium hydroxide is dissolved in 0.75 L of water.
Write the dissociation equation and calculate both [H3O+] and
[OH-].
7. Ten grams of calcium hydroxide are dissolved in 400 mL of
solution. Write the dissociation equation and calculate both
[H3O+] and [OH-].

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

D. is the answer hope that you

Theoretical temperature at which molecules stop moving and no more heat can be removed from the object. kelvin: absolute zero degrees. none of the above.