Caclulate the pH for a solution with an [H+] = 9.75 x10-4

Concerning the 10.0 ml of 0.50 m nacl to 100 ml of solution: when a solution is diluted, does it change the number of moles dissolved?

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?