What are you suppose to do for number 8?
1 answer:
Answer:
See the images below
Step-by-step explanation:
To draw a dot diagram of an atom, you locate the element in the Periodic Table and figure out how many valence electrons it has. Then you distribute the electrons as dots around the atom,
a. Silicon.
Si is in Group 14, so it has four valence electrons.
b. Xenon
Xenon is in Group 18, so it has eight valence electrons. We group them as four pairs around the xenon atom.
c. Calcium
Calcium is in Group 2, so it has two valence electrons. They are in a single subshell, so we write them as a pair on the calcium atom.
d. Water
Oxygen is in Group 16, so it has six valence electrons. The hydrogen atoms each contribute one electron, so there are eight valence electrons.
Chemists often use a dash to represent a pair of electrons in a bond.
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<h2>Answer:
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Explanation:
The chemical equation of the reaction that occurs when reacts with
is
→
moles of
requires
moles of
.
mole of
requires
moles of
.
Given that we have moles of
.
moles of
requires
moles of
.
But we have moles of
.
So, will be consumed first.
So, is the limiting reagent.