How many independent variables can you have in an experiment for it to be valid?

A prokaryote is most likely to use which of the following modes of metabolism to release energy if it is in an environment without oxygen, dies when when exposed to oxygen, and uses fementation

Which solution contains phenolphthalein pink?

Which property below is not a general property of metals: A. Ductile C. Malleable B. Poor conductor of heat D. High luster

Which of the following is the best way to separate sugar from water?

What is a solution that has a relatively low amount of solute called?

approximately how many different cells can be found in a human cell? A. less than one hundred B. less than 10 C. more than a million D. more than one thousand

If I have a 200 L container filled with nitrogen at a pressure of 1.0 atm, how many moles of nitrogen are present at 25 degrees C?

In the periodic table, a set of properties repeats from

Consider the model of the nitrogen atom. Which electron configuration matches this model? 1s22s22p2 1s22s22p3 1s22s22p4 1s22s22p5

In this experiment, you need to examine the idea of thermal energy transfer. Using a controlled experiment, .