Question
Correct and balance the following equations:
$\text{Ca}\ +\ \text{H}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{CaOH}\ +\ \text{H}$
$\text{Ca}\ +\ \text{H}_2\text{O}\xrightarrow{\ \ \ \ \ \ \ \ \ \ \ }\text{CaOH}\ +\ \text{H}$
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$\text{C}_{90}\text{C}_{60}\text{C}_{70}\text{C}_{20}$