Explanation:
The given balanced reaction equation is as follows.
The given data is as follows.
Mass of solution (that is sample) = 0.5 g
Therefore, calculate the mass of solute as follows.
= 0.178704 g Fe
Now, calculate the percent by mass Fe in the ore as follows.
Percent by mass of Fe in the ore =
=
= 35.7%
Thus, we can conclude that percent by mass of iron in the ore is 35.7%.
Answer:
Is this chemistry or ELA!
Answer:
Energy is moved from areas of surplus to those of deficit, with warm currents transporting warm water polewards and cold currents taking colder water to lower latitudes. It holds onto this heat for longer than the land does and the ocean currents move this heat around, from the tropics to higher latitudes.
Oh gosh oh I thought it might just go look for
<h2>Answer:</h2>
The correct answer is option C which is, "The sand is heated intensely".
<h3>Explanation:</h3>
Glass is the allotropic compound of silicon dioxide. For the formation of glass, first of all the sand which contains the silicon dioxide is melted. For this purpose it is heated intensely.
Due to heating at high temperature, it melts. After melting it ifs cooled immediately. In this step molecules become hard without any special pattern formation.
That is why glass is an allotropic compound. Hence correct answer is option C.