What concentration unit is measured in moles of solute per kilogram of solvent?
A. Molality
B. Molarity
C. Mole fraction
D. ppm

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

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Which scientists contributed to the determination of how cfcs in clouds in the upper atmosphere could destroy ozone molecules