Answer:
oxygen is an element because it is a pure substance which cannot be split into simpler substances by chemical means
Answer:
Explanation:
moles of acetic acid = 500 x 10⁻³ x .1 M
= 5 X 10⁻³ M
.005 M
Moles of NaOH = .1 M
Moles of sodium acetate formed = .005 M
Moles of NaOH left = .095 M
pOH = 4.8 + log .005 / .095
= 4.8 -1.27875
= 3.52125
pH = 14 - 3.52125
= 10.48
Assuming it has no electrical charge, your electron count would be equal to the atomic number.
B. Increasing the effective nuclear charge on an ion results in energy levels that are closer together.
hope it helps
