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tekilochka [14]
3 years ago
7

Carbonic acid weathering limestone a Chemical Change b Physical Change

Chemistry
1 answer:
MAXImum [283]3 years ago
6 0
If the acid is weathering away at the stone I'd say its a chemical chnage
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Gasoline and motor oil are chemically similar. They are both mixtures of nonpolar hydrocarbons
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morpeh [17]

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8 0
3 years ago
How many grams of water are required to produce 5.50L of hydrogen gas at 25.0 degrees C and 755mmHg?
stiv31 [10]

Answer is: 4.02 grams of water are required.
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p = 755 mm Hg ÷ 760.0 mmHg / atm = 0.993 atm.
T = 25 + 273.15 = 298.15 K.
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R = 0,08206 L·atm/mol·K.
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n(H₂) = 0.223 mol.
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m(H₂O) = 0.223 mol · 18 g/mol.
m(H₂O) = 4.02 g.
3 0
4 years ago
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