How many grams of NaOH are needed to make 4 L of a 0.50 M NaOH solution? (No need to round this one!)

6what is the importance of water on earth? a) it keeps the top layer of the geosphere cool b) it allows life to exist c) it provides ice at the poles d) it creates earth's blue color from space

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 is the vapor pressure of a solution with a benzene to octane?