It has a single valence electron.
3pro & 3ele - it is the single electron in shell 2.
Answer:
H2SO4 + CO3 = H2CO3 + SO4
Explanation:
H2SO4 + CO3
This is the reaction of sulphuric acid and carbon trioxide.
Balanced reaction is;
H2SO4 + CO3 = H2CO3 + SO4
So they react to produce carbonic acid and sulfate.
A heterogeneous mixture is a mixture in which its components retain their identity. The correct answer is B.