Question 17 (1 point)
When a one solar mass star evolves to a red giant stage
a. the core get...
Chemistry, 27.10.2020 19:40 ginocousins06
Question 17 (1 point)
When a one solar mass star evolves to a red giant stage
a. the core gets hotter and the surface getters hotter
b. the core gets hotter and the surface gets cooler
c. the core gets cooler and the surface gets hotter
d. the core gets cooler and the surface gets cooler
e. astronomers have no idea what really happens
Answers: 1
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Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal
Answers: 2
Chemistry, 22.06.2019 02:30, caeyanij
When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.
Answers: 3
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