Pls me ASAP giving brianliest to the best answer

Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

What is the formula of the ionic compound composed of calcium cations and chloride anions