Answer:
q1 = 9.42
q2= 226
q3= 31.4
qtot = 267
Explanation:
just did on the e of the dge
Answer:
1. Data:
a) Half-life: 5730 years
b) Final radioactivity: 68%
2. Solution:
a) <u>Determine the number of half-lives undergone</u>
- Since, <em>the radioactivity has decreased to 68%, means that the carbon-14 contanined is has been reduced in </em> 32%: 100% - 68% = 32%.
- 32 = 2⁵, meaning that five half-lives have passed since the <em>plant material</em> that formed the<em> parchment fragment died</em>.
b) <u>Compute the time of five half-lives</u>:
- 5 × half-life time = 5 × 5730 years = 28,650 years.
c) <u>Round to the nearest hundred:</u>
- 28,650 years ≈ 28,700 years
And that is <em>the age of the parchment</em>.
Answer:
They grow slowly over time, they are made up of multiple organisms.
Explanation:
One polyp is one individual. A Coral is made up of several polyps. Each polyp is less than 1 centimeters but a coral is made of many polyp so the coral itself cant be 1 centimeters across.
Answer:
warm water holds the least amount of dissolved oxygen, so I would assume the answer would be D. a small pond could heat up easily. in addition, the water is calm and not moving in a pond
