4
N
a
+
O
2
→
2
N
a
2
O
.
By the stoichiometry of this reaction if 5 mol natrium react, then 2.5 mol
N
a
2
O
should result.
Explanation:
The molecular mass of natrium oxide is
61.98
g
⋅
m
o
l
−
1
. If
5
m
o
l
natrium react, then
5
2
m
o
l
×
61.98
g
⋅
m
o
l
−
1
=
154.95
g
natrium oxide should result.
So what have I done here? First, I had a balanced chemical equation (this is the important step; is it balanced?). Then I used the stoichiometry to get the molar quantity of product, and converted this molar quantity to mass. If this is not clear, I am willing to have another go
Answer:
yes it is true they apply necessary safety measures
A) Z + 4
In the actual atom, half of the nucleus would be protons and the other half neutrons, hence the 2z. The additional four in the expression must be neutrons because adding protons would change the element all together.
Given what we know, we can confirm that if while setting up a beaker you notice that the stirring is erratic and unstable, you should immediately turn off the stirring mechanism.
<h3>Why turn off the stirring mechanism?</h3>
- The beaker is boiling a substance, making it very dangerous.
- Unstable and erratic stirring can cause spilling or even a broken beaker.
- The best course of action is to disable the stirring until the problem is fixed.
- This will ensure the safety of everyone involved.
Therefore, we can confirm that in order to ensure the safety of all participants, if while setting up a beaker you notice that the stirring is erratic and unstable, you should immediately turn off the stirring mechanism.
To learn more about lab safety visit:
brainly.com/question/20103808?referrer=searchResults
They are arranged differently, in diamonds they are interconnected bonds and in graphite they are arranged as sheets.
