Some Basics Concept of Chemistry MCQ test for MHT - CET {Chemistry Series 01}

Formulas of Basics Concept of Chemistry.

1. Celsius to Fahrenheit: °F = 9 5 (°C) + 32

2. Celsius to Kelvin: K = °C + 273.15

3. Atomic mass unit (1 amu) = 1 12 𝑡ℎ of a C-atom = 1.66 × 10^{−27 kg}

4. Average atomic mass = sum of (Isotopic mass × % Abundance)
                                                                     100
5. Number of moles (n) =      Mass of a substance       
                                          Molar mass of a substance    

6. Number of molecules 
                  = Number of moles × Avogadro number 
                  = Number of moles × 6.022 × 10²³

7. Molar volume of a gas at STP = 22.4 dm³ mol^-1

8. Number of moles(n) = Volume of a gas at STP.
                                         Molar volume of a gas.

                                      = Volume of a gas at STP
                                               22.4 dm³ mol^-1

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