The entire process, assuming their degrees of ionization to be 1 due to their strong acid/base properties, should be
2NaOH + H2SO4 --> 2H2O + Na2SO4
Therefore, if 200 grams of sodium hydroxide are used with molar mass 40, than 5 mols of sodium hydroxide was used. Using the ratio of 2:1:2:1, we see that 2.5 mols of Na2SO4 was used, therefore 2.5*molar mass = 2.5*142 = 355 grams.
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<span>A. the number of perching birds present</span>
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A.Carbon reacting with oxygen to form co2 is not a physical change it's a chemical change :)
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electrons have a negative charge
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