Following the Law of Conservation of Mass, you simply add the mass of both substances. Thus, 160 grams + 40 grams = 200 grams. So, even if initially, they are in liquid and solid form, they would still have the same mass even if they change phases, owing to that they are in a closed space.
Answer:
NaCi + LiCl is the correct answer
Answer:
C. Theories have been confirmed through tests; hypotheses haven't.
Explanation:
In simple terms,<u> a theory is something that has been studied, tested, and validated with results</u> whereas <u>a hypothesis is when one "guesses" or "assumes" about something with no prior tests</u>. In short, a hypothesis can be best understood as just a proposal while theory can be taken as a validated result.
Through various trials and tests, a theory arrives whereas a hypothesis can be the initial stage of the testing. For example, in saying that "My hypothesis is that this metal cannot bend" is just assuming or expressing one's opinion. But when the metal is tested and a definite result is found, then that becomes a theory.
So, we can say that a theory is a confirmed result after tests while a hypothesis is not tested or confirmed with a definite result.
Thus, the <u>correct answer is option C.
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Answer:
as the moon moves around earth, different portions are illuminated
