In 1987 the first substance to act as a superconductor at a temperature above that of liquid
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In 1987 the first substance to act as a superconductor at a temperature above that of liquid nitrogen (77 K) was discovered. The approximate formula of this substance is YBa2Cu3O7. Calculate the percent composition by mass of this material.
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In 1 mole of YBa 2 Cu 3 O 7 there are 1 mole of Y 2 moles of Ba 3 moles of Cu and ...View the full answer
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