Single replacement and I know that for sure if you need me to explain i can but its Single replacement <span />
Answer:
20.4081633 or 20.408
Explanation:
These ones you can do the regular method but it takes to long just divide and shoot.Hope this helps.
Problem 2
You start out with 216 ugrams of Fermium - 253. After 3 days, you will have 1/2 as much. 108 ugrams is what you have.
Another 3 days goes by. You started with 108 ugrams. That gets cut in 1/2 again. Now you have 54 ugrams.
Finally another 3 days goes by. You started with 54 ugrams. you now have 1/2 as much which would be 27 ugrams
#days Amount in micrograms
0 216
3 108
6 54
9 27
Problem One
You are using Nitrogen as your base example. The first thing you should do is fill in the table. Then you should try and make some rules. You need the rules in case the exam you are preparing for picks a different element to talk about these bond tendencies. In any event, it's handy to think this way.
<em><u>Table</u></em>
Bond Energy Kj/Mol Bond Length pico meters
N - N 167 145
N=N 418 125
N≡N 942 110
<em><u>Rules</u></em>
As the number of bonds INCREASES, the energy contained in the bond goes UP
As the number of bonds INCREASES, the length of the bond goes DOWN.
D) Helium (He) is the second most abundant element in the universe, the first one being hydrogen, and helium is followed by: oxygen, carbon, neon, iron, nitrogen, silicon, magnesium, and sulfur.
Answer:
5cm cubic.
Explanation:
Volume =Mass ÷ Density × 1cm cubic
