Answer:
Metals in general have they chemical property of reacting with an acid. Zinc reacts with hydrochloric acid to produce hydrogen gas. This is a chemical property. Chemical change results in one or more substances of entirely different composition from the original substances.
Zinc (Zn) always has a +2 charge. It is one of the exceptions.
Answer:
A. 1, 2, 5
Explanation:
Count the number of Ns in the formula.
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Answer:
When the string on a violin vibrates, waves move in both directions along the string, interfering with each other. These waves are standing waves.
Explanation:
What are Standing Waves?
The Standing Waves are waves generated due to the vibrational frequency that produces reflected waves capable of interfering with the incident waves.
"One possibility is that the battle between the virus and your immune system can take as long as two weeks.
It could be the immune system holds the virus at bay,” said Tompkins.
Or, your immune system has to work so hard that after two weeks it’s inflamed and that’s what makes you feel bad.
