When a calcium atom forms an ion, it loses two electrons. what is the eletrical charge ofbthe calcium ion? A. -2

B. -1

C. +1

D. +2​

How many grams of aluminum will there be in 98g of al2o3?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

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