Why are hydrogen and oxygen written as H2 and O2?

1. They are diatomic molecules.

2. All individual elements have the subscript 2.

3. To balance the equation.

What is the best definition of "thinking at the margin"? * O Deciding to use the entire piece of paper O Deciding whether or to do or use one additional unit of resource O Thinking about how to get the most work done O Thinking about how to get the

Molecular shape of XeOF4

Mary and Chuck each pull at opposite ends of a rope. Chuck is stronger. Who will move backwards? The rope will move but Mary and Chuck won't Both Mary and Chuck will move forward Chuck will move backwards Mary will move backwards

How many grams of ammonia would be formed from the complete reaction of 4.50 moles hydrogen

A crucible contains 6.4 g of copper, Cu. How many moles does this amount contain? [Given: Cu=64]

Carbon dating advisable for measuring materials ages for a few years, thousands of years, millions of years

What is the pH of a solution with [H+] = 7.0 x 10^-2?

A compound is a pure substance made of 2 or more types of elements that are chemically bonded True or false

In a chemical reaction, 300 grams of reactants are combined with 100 grams of reactant b. both a and b react to completion. how much will the product weigh

If log x = - 0.761. What does x equal