B; Seismometer would be the answer.
The correct answer is D. Light bulbs
Explanation:
In chemistry, halogens are a group of elements characterized for being non-metallic elements (they cannot conduct heat or electricity), and for forming salts. In terms of uses, halogens had been used mainly as part of disinfectants, as well as, in the production of light bulbs and lamps. This last application implies small quantities of halogens such as iodine are used in the mechanism of bulbs or lamps and this is a better option than other elements as it increases the life of the bulb and makes bulbs to a whither color. According to this, one use of halogens is light bulbs.
(4.5 x 10^24 molecules) x (60.013 g / 6.022 x 10^23) = 448 grams or 4.484 x 10^2 grams = Answer
Did you perhaps mean the phase of matter?
If so, then a solution has only one phase of matter: liquid. It is always almost always liquid because solutions are made up of a solvent and a solute and a solvent is always a liquid. Though, some may come in an emulsion form, but still it can be considered as liquid
