A device that detects flashes of light after ionizing radiation strikes a specially coated phosphor surface is called a .

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Select the correct answer. given: 2libr + ba → babr2 + 2li in this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced? a. 1.18 mol b. 2.37 mol c. 4.73 mol d. 16.4 mol e. 32.9 mol

What three things does a balanced equation show you?