Please help!! Hydrogen has two stable isotopes, 1^H and 2^H, Find the Average Atomic Mass relaizing that 1H has an
abundance of 98.5%.

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

How can one make a supersaturated solution? (apex)

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