CHEM BRAIN

No. individual atom in the sample of 1 mole of neon has a mass of 20.18amu because it is MDCAT2024

Atomic mass of element depends upon MDCAT2024

The type and relative amount of each isotope in an element can be found by MDCAT2024

The average weight of atom of  an element of compared to weight of an atom of _______ is called atomic weight MDCAT2023

Which element is used as standard to determine atomic mass of an element? MDCAT2023

The mass of a molecule of water is [Bihar CEE 1995]

The vapour density of a gas is 11.2. The volume occupied by 11.2 g of the gas at ATP will be [Bihar CET 1995]

Boron has two stable isotopes, B-10 (19%) and B-11 (81%). The atomic mass that should appear for boron in the periodic table is [CBSE PMT 1990]

The modern atomic weight scale is based on [MP PMT 2002]

The modern atomic weight scale is based on [MP PMT 2002]

Which one of the following properties of an element is not variable [Bihar MADT 1981]

Which property of an element is always a whole number [MP PMT 1986]

If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will [AIEEE 2005]

If the mass of neutron and electrons were made half and two times respectively to their atomic actual mass then the atomic mass of ₆C¹² NCERT-1982

One a.m.u stands for MDCAT2022

Hydrogen burns in chlorine to produce hydrogen chloride. The ratio of masses of reactants in chemical reaction H₂ + Cl₂ ------>2HCl MDCAT2013