The formula for water 水的分子式

The formula for water Teacher: What the chemical formula for water is the? Blonde: HIJKLMNO!! Teacher: What are you talking about? Blonde: Yesterday you said its H to O! 水的分子式 老师：水的分子式是什么？ 花瓶：HIJKLMNO！！ 老师：你在说什么？ 花瓶：昨天你不是说H to O吗？