Chemistry, 30.10.2019 04:31 sports1997
as you move from left to right across a period in the periodic table (for example, from na to ar), the energy to remove the outermost electron from an
a) generally increases.
b) generally decreases, because the radius of the elements from na to ar increases.
c) does not change because they are in the same period
d) varies unpredictably
Answers: 2
Chemistry, 22.06.2019 08:00
What are the similarities of physical and chemical change ?
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Chemistry, 22.06.2019 11:00
When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. hcl (aq) + koh (aq) h2o (l) + kcl (aq) the reaction gives off heat energy, so it is an reaction.
Answers: 1
Chemistry, 23.06.2019 10:30
The element chlorine has two stable isotopes, chlorine-35 with a mass of 34.97 amu and chlorine-37 with a mass of 36.95 amu. from the atomic weight of cl = 35.45 one can conclude that:
Answers: 2
as you move from left to right across a period in the periodic table (for example, from na to ar), t...
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