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A60.0-g sample of fermium-253 was placed in a sealed vessel 9.0 days ago. only 7.5 g of this isotope is now left. what is the half-life of fermium-253?
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Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic
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The rate constant for the reaction below is 6.2 x 10ā5 mol lā1 s ā1. if the initial concentration of a is 0.0500 m, what is its concentration after 115 s?
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Robert leaves a chocolate bar in his car while attending school all day. when he goes to his car in the afternoon, the bat has changed into gooey liquid. what happened to the chocolate bar
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A60.0-g sample of fermium-253 was placed in a sealed vessel 9.0 days ago. only 7.5 g of this isotope...
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