Density of 0.740 g/ml. if you have 328 grams volume in milliliters?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

What forms when chemical reactions combine pollution with sunlight?

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