<p>1 gram of a carbonate&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfenced><mrow><msub><mi>M</mi><mn>2</mn></msub><mi>C</mi><msub><mi>O</mi><mn>3</mn></msub></mrow></mfenced></math>&nbsp;on treatment with excess HCl produces 0.01186 mole of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>C</mi><msub><mi>O</mi><mn>2</mn></msub></math>. The molar mass of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>M</mi><mn>2</mn></msub><mi>C</mi><msub><mi>O</mi><mn>3</mn></msub></math>&nbsp;in g&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>m</mi><mi>o</mi><msup><mi>l</mi><mrow><mo>-</mo><mn>1</mn></mrow></msup></math>&nbsp;is:</p>