It’s either the first or second one
I think it’s the first one - the outer cells of the blastocyst
Chemistry is the branch of science that deals with the identification of the substances of which matter is composed the investigation of their properties and the ways in which they interact, combine, and change and the use of these processes to form new substances.
I think is 5 because you use density is found by mass divide by volume.
An electrochemical process involves any process that has to do with the transfer of elecrons.
<h3>What is an elecrochemical process?</h3>
An electrochemical process involves any process that has to do with the transfer of elecrons. These process include redo reactionand electron transport chains.
It is a true statement that the actiivity series helps to detect the products in a reaction because a metal that is lower in the series is always displaced by a metal that is higher in the series.
Learn more about electrochemical processess: brainly.com/question/12034258