Answer:
No. of molecules= mass/molar mass ×avogadro no.
= 13.2/50×6.02×10°23
No. of molecules =1.59×10°23
Explanation:
1. balanced
2. balanced
3. unbalanced
4. balanced
Answer:
The formula for water is . The oxidation number of hydrogen is +1. Since there are two of them, the hydrogen atoms contribute to a charge of +2. The water molecule is neutral; therefore, the oxygen must have an oxidation number of to balance the charge.
Answer:
Higher principal energy levels consist of orbitals which are larger in size than the orbitals from lower energy levels. The effect of the greater number of principal energy levels outweighs the increase in nuclear charge and so atomic radius increases down a group.
Answer:
እርስዎ ፊት ላላ ውስጥ ጡት ነዎት
እርስዎ ፊት ላላ ውስጥ ጡት ነዎት
እርስዎ ፊት ላላ ውስጥ ጡትExplanation: