7 Students take a field trip to the neares beach to explore the formation of sand
dunes. What is the best tool to use to
measure the height of a sand dune?
metric ruler
stopwatch
meter stick
calculator

It is important to wear proper protective equipment in lab even when not actively performing experiments because accidents can affect any researcher, even one not working on an experiment. select the best answer from the choices provided

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Classify this reaction: 2al+n2-> aln.