Answer:
Liquids
Note: the attachment below shows the properly arranged chart
Explanation:
The order of molecular motion of matter from fastest to slowest is;
Plasma>Gases>Liquids>Solids
Liquids move faster than solids not slower.
Answer: MBr2 is the resulting formula
Explanation:
Element M with Chlorine
M + CL2 --> MCL2
Element M with Bromine
M + Br2 --> MBr2
Chlorine and Bromine belong to the same group 7 known as HALOGENS. Both have an 7 outermost electrons, thus will react with Element M (most likely a metal in group 2) in the same way.
You would multiply Al and C12 together.
Remember that as we move from left to right we increase an electron and a proton both by 1.
Like when we go from A to B we will add one proton and one electron.
Also, when we down from top to bottom in same column of the periodic table then the number of electrons do not change.
ANSWERS
1) 5.
2) 7.
3) 4
4) 14
5) 3
The reaction is
Zn(s) + 2MnO₂(s) + H₂O(l) ⟶ Zn(OH)₂(s) + Mn₂O₃(s)
The reactants are Zn(s) and MnO₂(s) while Zn(OH)₂(s) and Mn₂O₃(s) products.
Let's see the oxidation state of each compound.
sum of the o.s. of the each element of compound = charge of the compound
O.s of O = -2
O.s of OH⁻ = -1
O.s of Zn(s) = 0
O.s of Mn in MnO₂(s) = x
x + (-2) * 2 = 0
x = +4
O.s of Zn in Zn(OH)₂(s) = a
a + (-1) * 2 = 0
a = +2
O.s of Mn in Mn₂O₃(s) = b
2*b + (-2) * 3 = b
2b = 6
b = +3
Since the O.s is reduced in Mn from +4 to +3, the reduced species is Mn₂O₃(s).
