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What is the percentage by mass of oxygen in a formula unit of sodium hydrogen carbonate (nahco3)?
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Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.
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How much energy is required to vaporize 2 kg of copper? a 4730 kj b 207kj c 9460 kj d 414kj
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What is the percentage by mass of oxygen in a formula unit of sodium hydrogen carbonate (nahco3)?...
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