Criado por Paige Louise
mais de 6 anos atrás
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Questão | Responda |
State the law of conservation of mass | In a chemical reaction, the total mass of the products is equal to the total mass of the reactants |
Why must a symbol equation balance? | Mass is conserved because no atoms are made or lost |
Calculate the relative formula mass of water (h20) | h=1 o=16 1+1+16=18 Mr=18 |
Calculate the relative formula mass of calcium carbonate (CaCO3) | Ca=40 C=12 O=16 16+16+16+12+40=100 Mr=100 |
When iron is burned, iron oxide is produced and the mass of the solid increases. why does the mass of the solid increase? | The mass of the solid increases because when the iron is burned, it combines with the oxygen and the oxygen has mass |
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