A balloon is filled to a volume of 12.5 l at 25C and 101 kpa how many grams of helium are in the balloon

If blood contains 150g of hemoglobin per liter of blood, how much hemoglobin would be contained in 10 ml of blood

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

What causes most sediment to wash or fall into a river