The answer is A. Many compounds are comprised of very different elements. For example, Sodium is a highly reactive group 1 solid metal that combusts when in contact with water, and Chlorine is a reactive group 17 gas that is used in the treatment of pool water; however, when you put them together, you get quite a common, non-toxic food additive: salt. Elements and compounds can sometimes resemble each other, but it certainly isn’t uncommon to see large differences between the two.
Answer: two elements and three atoms
Explanation:
An element is the simplest substance and hence cannot be broken down using chemical reactions.
Magnesium chloride is an ionic compound formed by the transfer of electrons from element magnesium (Mg) to element chlorine (Cl) where Magmesium forms a cation by losing two electrons and chlorine forms an anion by gaining electron.
There are 3 atoms in Magnesium chloride which include one atom of magnesium (Mg) and two atoms of chlorine (Cl).
Molar mass glucose : <span>180.1559 g/mol
</span>
number of moles:
n = mass solute / molar mass
n = 225 / 180.1559
n = 1.248 moles
therefore:
Molarity = moles solute / volume
Molarity = 1.248 / 0.825 => <span>1.513 M</span>
Answer:
Limiting reactant: Cl2.
Max mass of PCl3 = 41.44 g.
P4 leftover = 5.51 g.
Explanation:
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In this case, since the undergoing chemical reaction is:
In order to compute the maximum amount of PCl3, it is necessary to compute the grams of this product produced by each reactant, just as shown below, whereas molar masses and mole ratios are used:
Thus, since chlorine gas yields fewer grams of PCl3 than P4 we infer Cl2 is the limiting reactant and 63.41 grams of PCl3 product are yielded.
Finally, for the excess reactant, we see a difference of 63.41-41.44=21.97g, so we can compute of the leftover of P4 as follows:
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