A balance and a graduated cylinder are used to determine the density of a mineral sample. The sample was measured on the balance at 15.4 g.

The graduated cylinder began with 20 mL of water and measured 22.8 mL of water after the sample was placed into the graduated cylinder.

Density = mass / volume

What is the density of the mineral sample?

According to the diagram; a) identify the anode of the cell and write the half-reaction that occurs there b) write the overall equation for the reaction that occurs as the cell operates c) calculate the value of the standard cell potential ,e cell. d)write the shorthand notation of the cell above e)indicate the flow of the electrons on the diagram

The most common form of matter in the universe

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.