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Mass = force/acceleration

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oh sorrry i didnt know you were asking this type of  question
To find the formula mass add the atomic masses of the constituents atoms in the ionic compund

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example - NaCl
sorry its continued here . atomic mass of Na - 23 , atomic mass of Cl - 35.5 . adding the atomic mass we get formula mass as 58.5 
mark as brainliest please...........
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