Chemistry, 30.11.2019 21:31, Herbie3070
Radioactive carbon-14 has a half life of 5730 years. suppose a peice of wood has a decay rate of 15 disintegrations per minute. how many years would it take for the rate to decrease to 4 disintegrations per minute?
Answers: 1
Chemistry, 22.06.2019 15:30, elizabethprasad2
The reactions of photosynthesis occur in the of plant cell? a. mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll
Answers: 1
Chemistry, 22.06.2019 16:00, hjgjlgkjg
Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
Answers: 1
Radioactive carbon-14 has a half life of 5730 years. suppose a peice of wood has a decay rate of 15...
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