Does this particle diagram represent an element, compound, or mixture?

The pressure in a fluid is affected by which characteristics of that fluid

Given the following equation: 2a1 + 3mgcl2 --> 2alcl3 + 3mg how many moles of aluminum chloride are produced from 2.5 moles of magnesium chloride?

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false