According to the universal law of gravitation
everything has a gravitation force because everything has mass
gravity is uniform across the universe
o gravity only depends upon the mass of an object
not everything has a gravitational force because not everything existed when gravity first existed
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Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.