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sdas [7]
3 years ago
12

Osmosis is the passage of water molecules through a semi-permeable membrane from a solution of ________ concentration to _______

_ concentration. osmosis is the passage of water molecules through a semi-permeable membrane from a solution of ________ concentration to ________ concentration. lower, higher higher, lower
Chemistry
1 answer:
grandymaker [24]3 years ago
3 0

Osmosis is the passage of water molecules through a semi-permeable membrane from a solution of ___lower_____ concentration to ___higher_____ concentration.

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The answer is 33.33 %


The explanation:


According to the reaction equation:


MgCO3(s) + 2HCl (aq) --> MgCl2(aq) + H20(l) + CO2(g)


we can see that 1 mole of MCO3 will produce → 1 mole of CO2


-Now we need o get number of mole of CO2:


and when we have 0.22 g of CO2, so number of mole = mass / molar mass


moles = 0.22 g / 44 g/mol = 0.005 mole


∴ moles of Mg = moles of CO2 = 0.005 mole


∴ mass of Mg = moles * molar mass


= 0.005 * 84 /mol = 0.42 g


∴ Percent of MgCO3 by mass of Mg = 0.42 g / 1.26 * 100


= 33.33 %



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3 years ago
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Answer:

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I think it is a False
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The molecular formula of a compound is C7H14O7. what is the empirical formula​
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