Chemistry, 03.04.2020 05:02 jayrichesz80Jahree
The half-life of radioactive carbon-14 is 5730 years. If the 14C level in a sample of organic matter has been reduced to 0.200% of its original value, approximately how much time has passed? Radioactive decay follows first-order kinetics.
a. 1650 years
b. 51,400 years
c. 29,900 years
d 2,870,000 years
e. 9220 years
Answers: 3
Chemistry, 21.06.2019 23:30
Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.
Answers: 1
Chemistry, 22.06.2019 03:00
About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question
Answers: 1
Chemistry, 22.06.2019 03:00
Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?
Answers: 2
Chemistry, 22.06.2019 17:20
Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?
Answers: 2
The half-life of radioactive carbon-14 is 5730 years. If the 14C level in a sample of organic matter...
Mathematics, 11.10.2021 01:00
English, 11.10.2021 01:00
English, 11.10.2021 01:00
Mathematics, 11.10.2021 01:00
Mathematics, 11.10.2021 01:00
Biology, 11.10.2021 01:00
English, 11.10.2021 01:00
Mathematics, 11.10.2021 01:00
Computers and Technology, 11.10.2021 01:00
Mathematics, 11.10.2021 01:00
Mathematics, 11.10.2021 01:00
English, 11.10.2021 01:00