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Answers by YJR

Answers by YJR
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In the classification of matter, how would we classify air? A) pure mixture B) pure substance C) homogeneous mixture D) heterogeneous mixture
answered Nov 17, 2018
3 votes
192k views
Which of these molecular electron configurations describe an excited state?
answered Jul 19, 2018
1 vote
209k views
What is -13.5+40.5 plz tell me
answered Mar 3, 2018
6 votes
215k views
4/5 ÷ 2/5 = ??????????????????????/
answered Feb 14, 2018
6 votes
189k views
On a bookshelf, there are 5 fiction and 4 nonfiction books. Paul randomly selects one, puts it back, and then randomly selects another. What is the probability that both selections were fiction books?
answered Jan 19, 2018
4 votes
47.9k views
How do I use 3 7 12 2= 51
answered May 27, 2017
6 votes
225k views
a recipe calls for 6 cups water and 4 cups of flour.if the recipe is increased,how many cups of water should be used with 6 cups of flour
answered Dec 14, 2016
3 votes
155k views
Which formula represents a hydronium ion? (1) H3O+ (3) OH– (2) NH4+ (4) HCO3–
answered Jun 8, 2016
6 votes
49.3k views
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