Chemistry, 09.07.2019 07:30 shaunarothh1276
Hi me solve this questions1. after 38 days, all that is left of a 50g sample of an isotope is 0.0488 g. which isotope is this? (graph 1)2. how many more years will it take to have 0.625 grams of strontium-90(graph 2)true or false1. a radioactive alkaline earth metal belongs to group 8a of the periodic table after emitting an alpha radiation.
Answers: 1
Chemistry, 21.06.2019 18:00, FloweyFlower
Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?
Answers: 3
Chemistry, 22.06.2019 14:30, Cartucho1978
According to le chatelier’s principle, a system in chemical equilibrium responds to stress by shifting the equilibrium in a direction that reduces the stress. normalizes the stress. increases the stress. changes the stress.
Answers: 1
Chemistry, 22.06.2019 15:30, alaf05160
Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what most likelyhappened? energy was created inside the blocks. energy was destroyed inside the blocks. energy was absorbed into the blocks from outside the system. energy was transferred from the warmer block to the cooler block.
Answers: 2
Hi me solve this questions1. after 38 days, all that is left of a 50g sample of an isotope is 0.04...
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