Answer:
19.99
Explanation:
The steps are what I did, so no need to do it the exact same!
1. Add 4.50 and 3.4
4.50 + 3.4 = 7.9
2. Add 7.9 and 12.09
7.9 + 12.09 = 19.99
Hope this helps!
I'm not sure about the second one so sorry for that! But, the other three blanks are length, graduated cylinder, and matter (I believe its matter, I'm sorry if thats wrong)
Again, I'm sorry I couldn't answer one and accurately answer the other one but I hope this helps you!
Answer:
well you see here if you add 15+15 it equals 30
Explanation:
please put the question :)
Answer:
.
Explanation:
Lithium is in the first column of the periodic table, so it will have 1 valence electron.
Bromine is in the seventh column of the periodic table, so it will have seven valence electrons.
They must combine in a way to reach 8.
When combining elements to form compounds, the "crisscross method" is used. Above Li would be a charge of +1, and above Br would be a charge of -1.
Cross the 1 from the top of Li to the bottom of Br, and so there is 1 Br.
Cross the 1 from the top of Br to the bottom of Li, and so there is 1 Li.
It is not written BrLi because chemists decided to order them the other way. Technically speaking, it isn't wrong, but the positive charge is normally put on the left and the negative charge is normally put on the right.
The answer to this question is theory