21. How many moles are in 1.25 g of CH4? Information that MIGHT be useful: At room temperature, the density of CH4 is 0.654 g/L. a. 0.0779 mol
b. 0.818 moi
c. 1.91 moi
d. 12.8 mol
e. 20.1 mol

In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

What causes most sediment to wash or fall into a river