If an aspirin tablet contains 325mg aspirin, how many grams of aspirin does it contain?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

How does the atmosphere to make earth livable? check all that apply. causes the seasons contains oxygen provides warmth creates important nutrients blocks harmful energy from the sun plz like !