I have 94.6 percentage can I get good college in DU for Bsc mathematics (honours ) or Bsc cs ( honours).
Answers
Answer:
Explanation:
To calculate the relative formula mass of calcium carbonate, we first need to write out its formula. It's an ionic compound formed between calcium ion
(
C
a
2+
)
and carbonate ion
(
C
O
2-
3
)
.
There are several ways to figure out the formula, one of the easier way is using the cross-over method. You may watch it here:
How to Write formula for Ionic Compound
After crossing over the number of the charges in
C
a
2+
and carbonate ion
C
O
2-
3
, we'll get
C
a
2
(
C
O
3
)
2
, which can be further simplified into
C
a
C
O
3
.
To calculate the relative formula mass, we'll need to count the number of atoms that are present in
C
a
C
O
3
.
How to Count Atoms
In
C
a
C
O
3
, we have
1 Ca
1 C
3 O
And then, we multiply with its atomic mass and add them all up, like this,
Relative formula mass
C
a
C
O
3
= (1 x 40) + (1 x 12) + (3 x 16) = 100