For example, say you are at home and a lightbulb goes out. Noticing that the lightbulb is out is an observation. You would then naturally question, “Why is the lightbulb out?” and come up with possible guesses, or hypotheses.
Is this a question or do you need a legitimate answer of something? If so please "add more details".
Which formula represents a molecule with the most polar
bond? (1) CO (3) HI (2) NO (4) HCl
The formula that represents a molecule with the most
polar bond is the HCl, hydrochloric acid. The answer is number 4.
In a chemical reaction equation.. There must be redox reaction taking palce.. So oxidation and reduction reactions will be happening on both sides of the equation.. You can separate the oxidation and reduction equations in halves. . So there will be one half oxidation equation and the other half reduction equation of the reaction.
All you have to do is multiply by two, since calcium chloride has the chem. formula, CaCl2. For every 1 mole of CaCl2, you'll have 2 mole of chloride ions in solution.