Asolution is made by dessolving 609 of naoh (m = 40g*mol^-1) in enough distilled water to make 300ml of stock solution. what is the volumes of this solution and the distilled water when mixed will result in a soluteion that is approximately 1 m naoh?

For example, 20mL of stock solution with 80mL of water.

Explanation:

60g of NaOH in 0,300L have a molar concentration of:

60g NaOH × ( 1 mol / 40g) = 1,5 moles of NaOH / 0,300L = 5M

If you want to mix this solution with water to produce a 1M NaOH solution you need to mix 1 part of volume of the stock solution per 5 parts of total volume. For example, mix 20mL of stock solution with 80mL of water. That is:

5M NaOH × ( 20mL stock solution / 20mL + 80mL -Total volume-) = 1M NaOH solution

I hope it helps!

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72