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Answers by Lucan

Answers by Lucan
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An original sample of K-40 has a mass of 25.00 grams. After 3.9 m 109 years, 3.125 grams of the original sample remains unchanged. What is the half-life of K-40?
answered Oct 22, 2017
7 votes
221k views
the energy level necessary to enable a reaction to occur is called the_____ energy. 1.)activation 2.)kinetic 3.)potential 4.)nuclear
answered Jul 5, 2017
2 votes
105k views
The ratio of three numbers is 4 : 3 : 1. the sum of the numbers is 64. the greatest of these three numbers is
answered May 24, 2017
6 votes
141k views
Use the following words to fill in the blanks conserve,equator,evergreen,grasslands,permafrost,Pole,precipitation,resting,taiga A biome is a region that has a particular climate.The climate in each biome
answered May 4, 2017
3 votes
160k views
The perimeter of a square 116ft ?
answered Jun 24, 2016
1 vote
195k views
Which of the following is an example of an improperly used subordinate clause? A. Rainsford swam to the island. After he fell off the boat. B. Even though the sniper was in pain, he continued to shoot.
answered Mar 23, 2016
7 votes
105k views
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