Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. This value was experimentally determined by Amedeo Avogadro.
Take what you are given so 0.457g divide this by the molar mass (calculate this by taking the atomic weight of Na and Cl and add them together 23+35).
So 0.457gNaCl divide by (58g NaCl) = .0078 mol Nacl
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!
Algebraic expression: It is an expression which is frame from the variables (x,y etc.), integer constants and algebraic operations (+,- , multiplication and division etc.).
Sequence is defined as the structured list of numbers.
Now, according to the given sequence, first place is
, second is
, third is
, fourth is
. Thus,
place of the sequence should be determined.
The
place of the sequence is
. Therefore, option (A) is correct.
The name for NH3 is Nitrogen trihydride.