Species present in a substance refers to
The smallest part of an element that cannot exist as a free state is
A free radical has
Cookies and bread rise due to
When halogens are exposed to sunlight, they split up in to
A hydrogen atom is
A balloon filled with 5g of hydrogen contains
The number of protons and neutrons in the nucleus if the atomic number of an element is 17 and the mass number is 35, is
Over 70% of earth's crust is covered with
The list which contains only elements is
The formula mass indicates the simplest ration between
Branch of chemistry dealing with the plantation and overcoming greenhouse effect is
1 mole of a substance refers to
The number of protons in the nucleus constitute it's
If 9.05 moles of ozone is formed in a storm then the mass of ozone is
Ca on losing 2 electrons becomes
Biochemistry deals with
The mass number of an atom is
A mole of any substance contains
The number of atoms in 5 moles of nitrogen atom is
Please disable the adBlock and continue. Thank you.