Which phrase describes carbon-14 dating?
O uses the rate at which nitrogen-14 decays into carbon-14
dates the remains of organisms to determine when they died
O measures the number of unstable elements in ancient volcanic rocks
determines the age of ancient fossils older than 50,000 years old
Answers: 1
Chemistry, 21.06.2019 13:30
You 4. you have been swimming in your neighborβs pool for an hour. the relative humidity of the air is 30 percent. will you feel warm or cool when you step out of the pool? explain your answer.
Answers: 1
Chemistry, 21.06.2019 23:00
Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom
Answers: 1
Chemistry, 22.06.2019 10:30
Balance and in which category does it fit in? single or double displacement or synthesis or decomposition? (a) k2 o β k + o2 (b) na + i2 β nai (c) cu(no3 )2 + naoh β cu(oh)2 + nano3 (d) kclo3 β kcl + o2 (e) ca(no3 )2 + hbr β cabr2 + hno3 (f) sn(oh)2 β sno + h2 o (g) p4 + n2 o β p4 o6 + n2 (h) fe + al2 (so4 )3 β feso4 + al (i) alcl3 + na2 co3 β al2 (co3 )3 + nacl (j) c3 h6 + o2 β co2 + h2 o
Answers: 1
Which phrase describes carbon-14 dating?
O uses the rate at which nitrogen-14 decays into carbon-14...
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