The mass of C02 contains same number of molecules as there are number of atoms in 2.3 g of sodium

1- mole of any Substance will have the same number of Molecules.

Molecular weight of CO2= 44

Molecular weight of H20= 18

So 18 g of H20 will contain the same Number of molecules as in 44 g of CO2.

Therefore 7.2 g of H2O will have same Number of Moleculesas in =7.2/18 x 44

= 17.6 g of CO2.

answer: option (b) is the correct answer.

explanation:

a covalent bond is formed by sharing of electrons. whereas polarity arises due to difference in electronegativity of two atoms.

therefore, more is the electronegativity of an atom which combines with the titanium, more readily it will induce a partial positive and negative charge.

thus, out of the given options fluorine is most electronegative and has an incomplete octet. therefore, it will readily combine with titanium to share the electrons and complete its octet.  

o conteúdo de calor de um sistema é igual à entalpia apenas para um sistema que é constante