Answer:
A mole ratio is a conversion factor that relates the amounts in moles of any two substances in a chemical reaction
Explanation:
Answer:
Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride.
SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)
Explanation:
The reaction of SiCl₄(g) with Mg(s) produce Si(s) and MgCl₂(s). A way to write a word equation could be:
<em>Silicon tetrachloride gas reacts with solid magnesium metal producing solid silicon and solid magnesium chloride</em>.
The unbalanced formula equation including physical states is:
<em>SiCl₄(g) + Mg(s) → Si(s) + MgCl₂(s)</em>
Answer:
605.6mg of quinine
Explanation:
Based on Lambert-Beer's law, the intensity of an optical measurement is directely proportional to its concentration.
Unknown concentration gives a reading of 327
100 ppm gives 180 of intensity
The concentration of the diluted quinine tablet is:
327 * (100ppm / 180) = 181.67 ppm. The final dilution
The concentration of the first diluted solution is:
181.67 ppm * (100.0mL / 15mL) = 1211ppm
ppm could be defined as mass of solute (In this case of quinine) in mg per liter of solution. That is:
1211mg / L
As the tablet was diluted to 500mL = 0.5L, the mass of the quinine is:
0.5L * (1211mg / L) =
<h3>605.6mg of quinine </h3>
I think the answer is B.
I know the answer cant be A because a lot of metal that is new can be shiny.
C is incorrect because malleable means that it can be permanently bent out of shape ( which metal can be )
D is incorrect because a lot of metal can conduct electricity for example copper and brass can both conduct electricity
<span />