Chemistry, 26.07.2019 12:50 rosieposie27
The half-life of carbon-14 is about 6000 years. assume that a sample of charcoal is formed by burning of living wood 15,000 years ago. how much of the original carbon-14 would remain today?
Answers: 1
Chemistry, 23.06.2019 11:30
Jenny places a strip of ph paper into a solution. when she removes the ph paper, it has turned yellow-green. what should jenny do next to determine the ph of her solution? a. use a different testing method because the ph paper should not change colors b. place the ph paper into a machine that reads the ph of the solution c. compare the ph paper's color with the color of ph paper from another solution d. compare the ph paper's color with a chart of colors and ph ranges
Answers: 1
Chemistry, 23.06.2019 15:30
Floor 19 is an isotope of fluorine it has different number a. electrons b. protons c. neutrons d.electron shells
Answers: 1
Chemistry, 23.06.2019 21:10
What is the molarity of a solution that contains 30. grams of naoh in 500. milliliters of solution?
Answers: 2
The half-life of carbon-14 is about 6000 years. assume that a sample of charcoal is formed by burnin...
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