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3 December, 20:42

Milk of magnesia, a suspension of mg (oh) 2 in water, reacts with stomach acid (hcl) in a neutralization reaction. mg (oh) 2 (s) + 2 hcl (aq) - → 2 h2o (ℓ) + mgcl2 (aq) what mass of mgcl2 will be produced if 1.82 g of mg (oh) 2 reacts? answer in units of g.

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  1. 4 December, 00:07
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    Balanced equation for the above reaction is as follows;

    Mg (OH) ₂ + 2HCl - - - > MgCl₂ + 2H₂O

    stoichiometry of Mg (OH) ₂ to MgCl₂ is 1:1

    mass of Mg (OH) ₂ reacted - 1.82 g

    number of moles of Mg (OH) ₂ - 1.82 g / 58.3 g/mol = 0.0312 mol

    number of Mg (OH) ₂ moles reacted - number of MgCl₂ moles formed

    number of MgCl₂ moles formed - 0.0312 mol

    mass of MgCl₂ formed - 0.0312 mol x 95.2 g/mol = 2.97 g

    mass of MgCl₂ formed - 2.97 g
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