Atom X has an atomic number 79 and an atomic mass of 197. Atom Y has an atomic number of 76 and an atomic mass of 197. Atom Z has an atomic number of 79 and an atomic mass of 200. What two atoms are considered to be the same element and why?

Asolution of sodium hydroxide was titrated against a solution of sulfuric acid. how many moles of sodium hydroxide would react with 1 mole of sulfuric acid?

At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k

Type the correct answer in the box. spell all words correctly.what is the correct term for living the most sustainable life you can within your current circumstances? when your are being as sustainable as you can within your current lifestyle, you are said to be sustainability.