What determines if a bubble seems to change colors?

What is the valence of Hydrogen, Oxygen, Nitrogen, Chlorine, Carbon and Silicon

A stream-like movement of ocean water far below the ocean surface is a gravitational current. Coriolis current. surface current. deep current.

20. Which of the following is a method of purifying water? A. Adding iodine B. Freezing C. Aeration D. Fixation

340 438 g how do I determine the number of significant figures in the measurement?

A balloon with a volume of 2.0 L at 25°C is placed in a hot room at 35°C. The pressure on the balloon is constant at 1.0 atm. What is the final volume of the balloon after it has been placed in the hot room?

Our body solution tests at a pH of about 6.8. This pH is:

A diatomic gas has the molar mass of 38.00g/mol. what is the possible formula?

Which of the following is the final concentration of KCl if 500 ml of 0.25 M KCl is diluted to a final volume of 5 L? 0.025 L 0.0025 L 25 L 2.5 L

What do you use to measure mass

A salt shaker filled with 17.0g sodium chloride contain how many moles?