Research completed by Harlow Shapley was most dependent upon what scientific tool? Please help me this is a test due today, I provided a picture.

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

In a reaction (at equilibrium) that makes more moles of gas than it consumes, what is the effect of increasing the pressure?

For each of the following compounds, decide whether the compound's solubility in aqueous solution changes with ph. if the solubility does change, pick the ph at which you'd expect the highest solubility. you'll find ksp data in the aleks data tab. compounds does solubility change with ph