Answer : In the polar molecule HBr, the charge on hydrogen is partial positive charge.
Explanation :
Polar molecule : It is defined as a chemical species where the distribution of electrons between the covalently bonded atoms is not equal.
As a result the net dipole moment of a polar molecule has opposing charges that means one atom has partial positive charge and another atom has partial negative charge.
As we know that HBr is a polar molecule due to the electronegativity difference between hydrogen and bromine.
The charge creates on hydrogen atom is partial positive and the charge creates on bromine atom is partial negative.
Hence, in the polar molecule HBr, the charge on hydrogen is partial positive charge.
1 mole of any substance contains Avogadro's number.
So, 1 mole of O2= 6.023x10^23 molecules
3 mole of O2= 6.023x10^23x3 molecules
= 1.8069x10^24 molecules
Each molecule of Oxygen has 2 atoms.
therefore,
1.8069x10^24 molecules= 1.8069x10^24 x 2 atoms
= 3.6138x10^24 atoms.
Answer: OA is a balanced equation.
Explanation: For an equation to be balanced, the number of atoms and the total charge of each element in the reaction, of the product and reactant side must be the same.
Considering OA; 6 atoms of nitrogen is present in the reactant side. Shifting to the product side, 6 atoms of nitrogen is also present. Taking the other element in the reaction into account, the number of atoms of each element balances on both sides.
B, millimeters because paper is really thin therefore it'd require small measurements for units.