Phenol red is a common ph indicator. you add phenol red to an unknown substance and it turns yellow. what does this indicate about the ph of the substance?

When Xavier places his hands near a light bulb, he notices that certain areas around the light bulb are warmer than others. Which best explains this?

What causes an increase in the average global temperature?

Glass breaking is an example of: Chemical change Chemical properties Temperature change Physical change

Substitution reaction?

How do i find the isotopic notation?

Sodium can achieve greater stability in its valence shell by

Resonance in air columns is used in which of these musical Instruments?

A student prepared a standard stock copper (II) sulfate solution with an absorbance value of 0.862. The student then decided to prepare a second solution containing copper (II) sulfate from the standard stock solution.

How do the results for methane compare to those for butane? does your experimental data verify charles's law?

How many grams of naoh would be needed to make 0.50 l of a 1.25 molar naoh solution? 2.5 grams 16 grams 25 grams 12 grams?