Particles are measured in atomic mass units, or AMU.
H2O2(I)
C6H6(O)
CO2(I)
C2H6(O)
HNO3(I)
Answer:
CaCl
2
Explanation:
As with all these problems, we assume a
100
⋅
g
of compound, and divide through by the ATOMIC masses of each component element:
Moles of calcium
=
36.1
⋅
g
40.08
⋅
g
⋅
mol
−
1
=
0.901
⋅
mol
.
Moles of chlorine
=
63.9
⋅
g
35.45
⋅
g
⋅
mol
−
1
=
1.802
mol
.
We divide each molar quantity through by the smallest molar quantity (that of calcium) to give an empirical formula of
CaCl
2
.
For ionic materials, we do not speak of the molecular formula, and the empirical formula is the formula we quote for reference.
It is because black absorbs heat whereas white reflects heat
Answer:Therefore, HCl is 2.765 % Hydrogen and 97.235 % Chlorine by mass.