Experiment: observing plant pipelines
materials:
directions:
drinking glass
put a few drops of food coloring in a glass of water
water
trim off the bottom 2 cm of a stalk of celery, place
food coloring
the celery in the water. let stand for 3-4 hours.
eye dropper
knife
stalk of celery
results:
1. describe what you see.

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

Which method would be best to separate a mixture of sand and gravel

What are the trends and exceptions to the trends in electron affinity?