What is the % yield if 20 grams of hydrogen is reacted with 32 grams of oxygen and produces 9 grams of water?

According to the tide table below what time of day will the highest tide occur?

Ahydrogen atom has 1 electron. how many bonds can hydrogen form? a) 1 b) 2 c) 3 d) 4 e) 5

An animal cell loses the ability to convert energy stored in food to energy that the cell can use. which of the cell's organelles has stopped working? a.the mitochondria b.the nucleus c.the vacuoles d.the endoplasmic reticulum