What do the numbers on the x-axis and y-axis tell you about atomic particles in the nuclei of the isotopes?

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0