Suppose you needed to build a raft to cross a fast-moving river. describe the physical and chemical properties of the raft that would be important to ensure your safety.

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.)

Could someone . i have tried to solve myself but my calculation is off

What’s #16 asking me and how do i solve it?