![]() ![]() How many moles are there in 52g of Helium? Number of moles of a substance = Number of particles of the substance / Avogadro's Constant Number of atoms of the He = N = 12.044 x 10 Number of moles of a substance = Given mass of the substance / Molar mass of the substance = 1 x Molar mass of H + 1 x Molar mass of N + 3 x Molar mass of O = 1 x Molar mass of H + 1 x Molar mass of Cl = 2 x Molar mass of C + 2 x Molar mass of H The formula unit mass of a substance is theĬalculate the molar mass of the following substances. The reaction in which two compounds exchange their ions toĪn electrolyte which completely dissociates into ions is ![]() Identify the pairs which are not of Isotopes? Which sample contains the largest number of atoms How many moles of magnesium phosphate will contain Difference Between Atomic Mass and Atomic Number ![]()
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