In the presence of excess oxygen, methane gas burns in a constant-pressure system to yield carbon dioxide and water:

How many atoms or molecules are there in a mole of a substance?

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes? or no? this question is worth 20 points! let it be correct!