The given data states that the 2-D diagram is representing Lithium molecule.
few things one must know before solving the question,
Lithium is a Alkali metal having 3 electrons, out of which two electrons lies in 1S orbital (K shell) & one electron lies in 2S orbital. To attain the stability ( nobel configuration) lithium requires 7 electron which is not possible at ordinary condition & it requires a huge amount of energy instead lithium loses one electron from outermost shell.
We know that when any atom loses a electron the oxidation number is written with plus(+) symbol.
Hence net charge on lithium ion is +1
Answer:
Explanation:
a. CuO+ 2HCl⇒CuCl2+ H2O
b. =
= 0,05 (mol)
⇒=
=0,05 mol
⇒= 0,05×135=6,75 (g)
c. =2×
=0,1 (mol)
⇒= 0,1×36,5= 3,65 (g)
⇒=
×100=36,5 (g)
⇒ Nồng độ phần trăm dd sau phản ứng= Nồng độ % dd CuCl2=×100=
×100≈ 16,67%
Answer:
<h2>14.85 moles </h2>Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>14.85 moles</h3>Hope this helps you