A beaker is weighed on a balance and found to have a mass of…

A beaker is weighed on a balance and found to have a mass of 57.155g. Substance Q is added and the beaker with the substance is found to now have a mass of 62.586g. The entire beaker is heated, Substance Q reacts, producing solid X and releasing substance R as a gas. The mass of the beaker and leftover substance X is now 58.322g. Calculate the masses of Substance Q, X, and gas R, using correct significant figures.

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