Sodium represents by the (Na).
Answer:
Kr-81 is most stable because of its high half lige and kr-73 is the most radioactive because of its least half life
Explanation:
Stability is directly proportional to half life of a reaction
Its relative density causes objects to float or sink.
If the density of the substance is greater than the substance it is in, it will sink.
If the density is less than the substance it is in it will float.
Answer:
Prop-1-yn-1-ide
Explanation:
In this case, we will have an <u>acidic hydrogen</u> upon the left carbon in the alkyne. In the presence of a<u> base</u>, we can <u>remove</u> this hydrogen. In this reaction the base will be
. The <u>amidure ion</u> will remove the hydrogen of the alkyne to produce a <u>carboanion</u>. (See figure)
Answer:
Gases in Earth's atmosphere form a protective layer
Nitrogen, oxygen and ozone molecules in the upper atmosphere and stratosphere absorb ultraviolet light from the Sun, providing a shield that prevents this radiation from passing to the Earth's surface.
Explanation:
i got this from
...www.aeronomie.be