Answer:
Match the atomic particles with their electrical charges.
1.
positive (+)
proton
2.
negative (-)
electron
3.
neutral (0)
neutron
Explanation:
Answer:
The biodiversity of an area is literally the number of species, both plant and animal, inhabiting the environment being examined. When a species is no longer found in a region, it is locally extinct.
Explanation:
Answer:
![a=\frac{f}{d-e}-\frac{b}{c}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bf%7D%7Bd-e%7D-%5Cfrac%7Bb%7D%7Bc%7D)
Explanation:
Hello.
In this case, for the equation:
![(a+b/c)(d-e)=f](https://tex.z-dn.net/?f=%28a%2Bb%2Fc%29%28d-e%29%3Df)
For isolating a, we must first pass (d-e) to divide at the other side as it is initially multiplying:
![a+b/c=\frac{f}{(d-e)}](https://tex.z-dn.net/?f=a%2Bb%2Fc%3D%5Cfrac%7Bf%7D%7B%28d-e%29%7D)
Next, as b/c is adding, it passes to subtract at the other side in order to finally isolate a:
![a=\frac{f}{d-e}-\frac{b}{c}](https://tex.z-dn.net/?f=a%3D%5Cfrac%7Bf%7D%7Bd-e%7D-%5Cfrac%7Bb%7D%7Bc%7D)
Best regards!
Explanation:
Explanation:
Given the molecular weights:
M
r
N
a
O
H
=
40
g
m
o
l
M
r
N
a
2
S
O
4
=
142
g
m
o
l
The analogy of the moles will be held constant:
n
N
a
O
H
n
N
a
2
S
O
4
=
2
1
n
N
a
O
H
n
N
a
2
S
O
4
=
2
For each one, substitute:
n
=
m
M
r
Therefore:
n
N
a
O
H
n
N
a
2
S
O
4
=
2
m
N
a
O
H
M
r
N
a
O
H
m
N
a
2
S
O
4
M
r
N
a
2
S
O
4
=
2
200
40
x
142
=
2
200
⋅
142
40
x
=
2
200
⋅
142
=
2
⋅
40
x
x
=
200
⋅
142
2
⋅
40
=
100
⋅
142
40
=
10
⋅
142
4
=
1420
4
=
=
710
2
=
355
g
r
a
m
s
(or just use a calculator