How many valence electrons configuration of oxygen?

What is the main component of the earths ancient atmosphere?

In laboratory, your TA makes a statement about the toxicity of the fumes of a reaction. What does the term toxicity mean? A. The sum of adverse effects resulting from exposure to a material, normally by the mouth, skin, or respiratory tract. B.

When hydrogen is burned, it reacts with oxygen and produces?

Ammonia gas and oxygen gas react to form water vapor and nitrogen monoxide gas. What volume of water would be produced by this reaction if 6.3L of ammonia were consumed? Be sure your answer has the correct number of significant digits.

Describe what happens to rocks that are pushed under Earth's surface and become hotter and experience more pressure?

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda