2 half-lives have elapsed to yield 125 atom of the original sample
Half of the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5730 years. In other words , after 5730 years ,only half of the original amount of 14 c remains in a sample of organic material . Imagine that you start out with 100 grams of carbon 14 . The half -life is the time it takes for half of given amount of isotope to decay .
learn more about how many half- lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N- 14
brainly.com/question/2320811
Answer:
Acidic substances
Explanation:
For example : lemon,acid sulfuric,acid nitrate
Answer:
its 7 electrons
Explanation:
nuetron=proton=electron
so oxygen have the atomic number of 8 so if 1 neutron is missing then there will be 7 neutron which is equal to the number of protons and electrons
Answer:
proteins
Explanation:
Ribosomes are the sites in a cell in which protein synthesis takes place. Cells have many ribosomes, and the exact number depends on how active a particular cell is in synthesizing proteins. For example, rapidly growing cells usually have a large number of ribosomes (Figure 5).
Rough endoplasmic reticulum looks rough under a microscope because it is covered by little ribosomes, that help with protein synthesis. The reason smooth endoplasmic reticulum does not apear rough is because it's synthesis is of lipids and steroids and it therefore does not need these ribosomes.
