What landforms form at convergent boundaries where two oceanic plates collide?

If you mix chlorine lithium and nickel together which two elements would be the most reactive

Asun-sized star will spend most of its lifetime as a: white dwarf red giant protostar main-sequence star

Asmall metal bar, whose initial temperature was 10° c, is dropped into a large container of boiling water. how long will it take the bar to reach 70° c if it is known that its temperature increases 2° during the first second? (the boiling temperature for water is 100° c. round your answer to one decimal place.) sec how long will it take the bar to reach 98° c? (round your answer to one decimal place.)