MERCURY
VENUS
EARTH
MARS
JUPITER
SATURN
URANUS
NEPTUNE
Answer:
Y³⁻ A non metal that gained three electrons.
V²⁺ A metal that lost two electron
Z²⁻ A non metal that gained two electrons
X³⁺ A metal that lost three electrons
Explanation:
Metals lost the electrons and form cation
while non metals gain the electrons and form anion.
Y³⁻
c) A non metal that gained three electrons.
Non metal gain three electrons and form anion with the charge of -3.
V²⁺
a) A metal that lost two electron
A metal lost two electrons and form cation with charge of +2.
Z²⁻
d) A non metal that gained two electrons
A non metal that gained two electrons and form anion with charge of -2.
X³⁺
b) A metal that lost three electrons
A metal that lost three electrons and form cation with charge of +3.
The answer is B, distillation.
(You can see more details about distillation as well as other separation techniques on the document pdf titled Lab #2 Physical Separation Techniques by ccri.edu)
Answer:
Halogens family
Explanation:
Be familiar with the periodic table
M(H₂O) = 255 g.
m₁(NaCl) = 10.0 g.
m₁(solution) = 255 g + 10 g = 265 g.
ω₁ = 10 g / 265 g · 100%.
ω₁ = 3.77% ÷ 100% = 0.0377.
ω₂= 10% ÷ 100% = 0.1.
ω₂= m₁(NaCl) + m₂(NaCl) / m₁(solution) + m₂(NaCl).
0.1 = 10 g + m₂(NaCl) / 265 g + m₂(NaCl).
26.5 g + 0.1·m₂(NaCl) = 10 g + m₂(NaCl).
0.9·m₂(NaCl) = 16.5 g.
m₂(NaCl) = 18.33 g.
