The moles of methane required to produce 81 g of water after complete combustion is________× 10^-2 mol. (nearest integer)

<p>&nbsp;<math><mrow><mi>C</mi><msub><mrow><mi>H</mi></mrow><mrow><mn>4</mn></mrow></msub><mo>+</mo><mn>2</mn><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>→</mo><mi>C</mi><msub><mrow><mi>O</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>+</mo><mn>2</mn><msub><mrow><mi>H</mi></mrow><mrow><mn>2</mn></mrow></msub><mi>O</mi></mrow></math></p><p>2 moles of water produced by 1 mole of methane</p><p>Or 36 gm of water produced by 1 mole of CH₄</p><p><math><mrow><mo>∴</mo></mrow></math>&nbsp;81 gm of water produced =&nbsp;<math><mrow><mfrac><mrow><mn>1</mn><mo>×</mo><mn>8</mn><mn>1</mn></mrow><mrow><mn>3</mn><mn>6</mn></mrow></mfrac></mrow></math> = 2.25 mole of CH₄</p><p>Mole of CH4 required = 225 × 10^-2</p><p>the nearest integer = 225</p>

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