29) How many mL of a 5.5 M stock solution of NaOH are needed in order to prepare a 100 mL of
a 1.2 M solution of NaOH?
A)
21.8 mL
B)
0.066 mL
C)
4.3 mL
458 mL

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

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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.

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