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Describe the historical perspective of adolescence.
answered Nov 30, 2019
4 votes
115k views
What is the solution to the following system
answered Sep 20, 2019
4 votes
8.1k views
In Dobereiner's classification system, the atomic mass of the middle element could be estimated by A. finding the difference between the atomic masses of the other two elements in a triad B. finding the
answered Dec 29, 2018
6 votes
229k views
The atomic mass of oxygen is 16. how many neutrons does oxygen have in its nucleus?
answered Nov 19, 2018
3 votes
67.2k views
Oxidation occurs when materials containing are exposed to oxygen and water
answered Sep 16, 2018
4 votes
171k views
Which statement describes James Chadwick’s discovery. He discovered negatively charged atomic particles that were deflected by a charged plate. He discovered that the atomic nucleus is a dense, positively
answered Aug 15, 2018
4 votes
209k views
What is the maximum amount of time that can be served by a UN secretary-general?
answered Mar 18, 2018
7 votes
46.7k views
When iron reacts with oxygen, it forms iron oxide, or rust. 4 Fe + 3 O2 2 Fe2O3 If 112 g of iron (Fe) combines with 24 g of oxygen (O2), how much iron oxide is formed? (88 g Fe2O3) (112 g Fe2O3) (24 g
answered Mar 18, 2018
0 votes
199k views
Write the number in expanded notation 4,408,730
answered Jan 7, 2018
5 votes
149k views
Can somebody please help me with this co.
answered Jun 6, 2017
5 votes
76.1k views
How many atoms are in 1.2 moles of cesium
answered Apr 26, 2017
3 votes
233k views
Which expresions is equivalent to 2a + 5(b + 7a)? A.) 7a + 12b B.) 37a + 5b C.) 9a + 5b D.) 2a + 35b
answered Apr 16, 2017
3 votes
62.9k views
What term describes the people of the Ghana Empire? A. Muslim B. Animists C. Isolated D. unskilled I FOUND THE ANSWER the answer is B. Animists!! thank you anyways cx
answered Mar 29, 2017
1 vote
89.8k views
Venice was located in an ideal position to trade with
answered Feb 20, 2017
1 vote
69.8k views
An original work or a scientist's experiment is called a _____. tertiary source secondary source primary source
answered Jun 22, 2016
5 votes
133k views
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