Which of these statements is incorrect regarding an atom of the element scandium?
a. i...
Chemistry, 12.10.2019 13:30 4804174946
Which of these statements is incorrect regarding an atom of the element scandium?
a. its chemical symbol is sc.
b. it has 21 positively charged protons in its nucleus.
c. it has 21 neutrons in its nucleus.
d. it has 21 negatively charged electrons.
Answers: 1
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Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%
Answers: 1
Chemistry, 22.06.2019 06:00
The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
Answers: 1
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