A dependent variable is: A. Changed to test a hypothesis.
B. Measured to show the effect of a hange.
OC. Kept the same to make an experiment a fair test.
D. Collected to draw conclusions.

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %