What can you use to test substancea for their ph value if you dont have a strip of litmus paper handy?

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.)

The softest and hardest minerals are: softest hardest

Which levels of government establish and implement educational requirements for minors