Answer:
6amu
Explanation:
mass=proton+neutron
mass of cl2=2(16+16)=64amu
In order to compare the two elements, one must take note of
its placement in the periodic table. As you go down a group in the periodic
table, the metallic property increases. Thus in the problem, Antimony has a
more metallic behavior than Arsenic so that already crosses out statement A and
B from the choices since it is untrue. The number of electron shells meanwhile
decreases as you go down the group. Therefore the answer would be Arsenic has a
more nonmetallic behavior than antimony because arsenic’s atoms have fewer
electron shells.
HOPE THIS HELPS
Answer:
The volume will decrease
Explanation:
Since PV = nRT, and P is unchanged and T increases, the volume will decrease because the right and left sides of the equation have an inverse relationship. So as T increases, V must decrease to balance the equation.
Answer:
0.01 faraday
Explanation:
We'll begin by writing the balanced equation. This is illustrated below:
CaCl₂ (aq) —> Ca²⁺ (aq) + 2Cl¯ (aq)
Ca²⁺ (aq) + 2e —> Ca
Molar mass of Ca = 40 g/mol
Mass of Ca from the balanced equation = 1 × 40 = 40 g
1 mole of electron (e) = 1 faraday
2 moles of electrons (e) = 2 × 1 faraday
2 moles of electrons (e) = 2 faraday
From the balanced equation above,
40 g of Ca was deposited by 2 faraday.
Therefore, 0.2 g of Ca will be deposited by = (0.2 × 2)/40 = 0.01 faraday.
Thus, 0.01 faraday is needed for the reaction.
