Chemistry, 02.08.2019 15:00 lavorisjonesjr1
Will give brainliest! the first known telescopes, used around 1600, consisted of a lens and an eyepiece. today, telescopes are often computer controlled and consist of a complicated array of sophisticated lenses. which statement correctly describes how telescopes have changed over time? a. the telescopes of the 1600s were used until the year 2000, when a more sophisticated telescope was built. b. the telescopes of the 1600s were gradually improved upon over time, resulting in the telescopes that are available today. c. the telescopes of the 1600s were used until the year 1900, when a more sophisticated telescope was built that was used until the year 2000. d. the telescopes of the 1600s were abandoned after about 50 years, and the technology was completely replaced.
Answers: 2
Chemistry, 21.06.2019 18:20
Complete the table for ion charge based upon their losing or gaining electrons in the outer shell. (use the periodic table as necessary.) group most likely ionic charge # of valence electrons i +1 ii +2 iii +3 iv +4 or -4 v -3 vi -2 vii -1 viii 0
Answers: 2
Chemistry, 22.06.2019 01:30
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Consider the nuclear equation below. 239/94 pu—-> x+ 4/2 he. what is x?
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How many atoms of mg are present in 97.22 grams of mg? 6.022 Ă— 1023 2.408 Ă— 1024 4.818 Ă— 1024 5.855 Ă— 1025
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Will give brainliest! the first known telescopes, used around 1600, consisted of a lens and an eyep...
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