Carbon dioxide (CO2)
Argon (Ar)
Hydrogen (H)
Helium (He)
Ionic compounds are composed of two ions: a positive and a negative ion. For neutral ionic compounds, these charges cancel out. For example, NaCl is a neutral atom which comes from a strong acid HCl and a strong base NaOH. Because they are both strong, the charges balance out and it comes out as neutral.
Answer:
There are twice the molar quantity of nitrogen atoms in nitrous oxide, i.e.
1×10−2⋅mol
Moles of nitrous oxide
=
0.217
⋅
g
44.013
⋅
g
⋅
m
o
l
−
1
=
5
×
10
−
3
⋅
m
o
l
.
Given the composition of
N
2
O
, there are this
2
×
5
×
10
−
3
⋅
m
o
l
of nitrogen atoms.
Endothermic reactions<span>. An </span>endothermic reaction occurs <span>when the energy used to break the bonds in the reactants is greater than the energy given out when bonds are formed in the products. This means that overall the </span>reaction<span> takes in energy, therefore there is a temperature decrease in the surroundings.</span>