Chemistry, 14.07.2019 17:30 tayshawngooch
Aradioactive isotope of potassium (k) has a half-life of 20 minutes. if a 43 gram sample of this isotope is allowed to decay for 80 minutes, how many grams of the radioactive isotope will remain?
Answers: 1
Chemistry, 21.06.2019 20:30
An exothermic reaction is conducted in an insulated calorimeter filled with water. the calorimeter is then sealed so that there is no heat exchanged between the contents of the container and the surrounding air. which of the following statements is true about the reaction?
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Chemistry, 22.06.2019 09:30
Which ocean zone has the most abundant primary producer and why a) the abyssopelagic zone ,du to the absence of light and cold water temperatureb) the bathypelagic zone, due to the absence of light and cold water temperaturec) the mesopelagic zone ,due to uts high light availability and warm water temperature d) the epipelagic zone,due to its high light availability and warm water temperature
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Chemistry, 22.06.2019 22:30
What relationship exists between an enzyme and a catalyst?
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Aradioactive isotope of potassium (k) has a half-life of 20 minutes. if a 43 gram sample of this iso...
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