Student mixes 5 g of sand into a beaker of 20 g of water. Is this a physical or chemical change-why?
1 answer:
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Answer:
d . Sc2O5
Explanation:
Hello,
In this case, when forming oxides from a metal and oxygen, for us to find out each element's subscript, we must exchange them as shown below, considering +5 for scandium:
For that reason, the answer is d . Sc2O5
Best regards.