Which is an element? water carbon dioxide air hydrogen?

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver