Answer:
C.Hydrogen
Explanation:
The hydrogen atom contains 1 proton and 1 electron, but no neutrons.
Answer:
5
Explanation:
Sorry, don't have one
<u><em>Hope this helps and I get brainliest <3</em></u>
Answer:
magnesium
Explanation:
it is the only metal in the choices. everything else is on the right side of the old line that separates metals and nonmetals on the PPT. nonmetals aren't, shiny or good conductors or malleable or ductile. only metals can have those qualities. the only metal is magnesium
Answer:
P=atm
Explanation:
The problem give you the Van Der Waals equation:
First we are going to solve for P:
Then you should know all the units of each term of the equation, that is:
where atm=atmosphere, L=litters, K=kelvin
Now, you should replace the units in the equation for each value:
Then you should multiply and eliminate the same units which they are dividing each other (Please see the photo below), so you have:
Then operate the fraction subtraction:
P=
And finally you can find the answer:
P=atm
Now solving for b:
Replacing units:
Multiplying and dividing units,(please see the second photo below), we have:
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).