MHT CET Chemistry Question (2026) — Solution

Step-by-step solution

Let the mass of one atom of element 'x' be m_x and the mass of one carbon atom be m_C. Given that the ratio of the mass of an atom of element 'x' to the mass of a carbon atom is 9:1, we have: m_x m_C = 9 1 The ratio of their molar masses is equal to the ratio of their atomic masses: M_x M_C = 9 Given the molar mass of carbon, M_C = 12\ g/mol , the molar mass of element 'x' is: M_x = 9 12 = 108\ g/mol Therefore, the mass of 1\ mol of element 'x' is 108\ g .