A student is designing a device that can be used for communication. Which TWO waves on the electromagnetic spectrum should the student use?

gamma rays

X-rays

ultraviolet waves

microwaves

radio waves

The closeness of measured values to the acceped value is called

What is the element K2SO4 and is it ionic, covalent or polyatomic

Draw the ether formed when ethyl alcohol is heated in the presence of concentrated sulfuric acid.

Lactic acid fermentation occurs in a. any environment containing oxygen. b. mitochondria. c. muscle cells. d. bread dough

This is is the common name for the aqueous cation h3o+, formed when a water molecule combines with the proton from a hydrogen atom.

It is snowing where Jenna lives. It's been snowing all day, but now the snow has changed to sleet and then to freezing rain. What is happening to cause these changes?

Liquid sample a has a higher vapor pressure than liquid sample b (both in closed containers). what can be said about sample a compared with sample b?

A neutral atom has high electronegativity. Describe what happens to this atom during ionic bond formation?

Which daughter element is produced from the beta decay of 89/36 kr

What is "change" when we are talking about natural and physical systems? A. Information that has been proven to be true B. Repeated processes that are used in a variety of ways C. A process for using knowledge and skills to acquire new knowledge D.