Answer:
16.74×10²³ atoms
Explanation:
Given data:
Number of moles of X = 2.78 mol
Number of atoms = ?
Solution:
According to Avogadro number.
1 mole of any substance contain 6.022×10²³ atoms. Thus,
2.78 mol × 6.022×10²³ atoms / 1 mol
16.74×10²³ atoms
The number 6.022 × 10²³ is called Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.
For example,
18 g of water = 1 mole = 6.022 × 10²³ molecules of water
1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen
Answer:
d.-379 cal/mol
Explanation:
ΔG = ΔG⁰ + RT ln K
for equilibrium ΔG = 0
ΔG⁰ + RT ln K =0
ΔG⁰ = - RT ln K
PG ⇒ PEP
K = [ PEP ] / [ PG ]
= .68 / .32
= 2.125
ΔG⁰ = - 1.987 x 273 x ln 2.125
= - 409 Cal / mole
Option d is the nearest answer .
Answer:
Excellent question
Explanation:
In order to clarify the hypothesis it is important