Answer:
Number of moles = 0.125 mol
Explanation:
Given data:
Mass of calcium = 5.00 g
Number of moles = ?
Solution:
Formula:
Number of moles = mass/ molar mass
Molar mass of calcium = 40 g/mol
By putting values,
Number of moles = 5.00 g/ 40 g/mol
Number of moles = 0.125 mol
Answer:
Option B and D
Explanation:
The Gibb's free energy also referred to as the gibb's function represented with letter G. it is the amount of useful work obtained from a system at constant temperature and pressure. The standard gibb's free energy on the other hand is a state function represented as Delta-G, as it depends on the initial and final states of the system.
A feasible way to synthesize the product entails the spontaneity of the reaction.
The spontaneity of a reaction is explained by the standard gibb's free energy.
If Delta-G = -ve ( the reaction is spontaneous)
if Delta -G = +ve ( the reaction is non-spontaneous)
if Delta-G = 0 ( the reaction is at equilibrium)
Hence the option (B and D) with negative Gibb's free energy are the reaction that are spontaneous.
Answer:
Both A and B will be unreactive!
Explanation:
10=2, 8
18=2, 8, 8
Answer:
97
Solution:
4(13)+(18+27)
<em>then simplifies to-</em>
52+45 = 97
(The reason its 52+45 is because 4 x 13 = 52 and 18 + 27 = 45)