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AURORKA [14]
3 years ago
9

Why does a reaction slow down with time?

Chemistry
1 answer:
nignag [31]3 years ago
5 0

Answer:

D. The reactant concentrations decrease.

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If 15.0 mL of 12.0 M H3PO4 reacts with 100.0 mL of 3.50 M of Ba(OH)2 , which substances is the limiting reactant?
____ [38]

Use the formula stated below

\boxed{\sf Molarity=\dfrac{Moles\:of\:solute}{Volume\:in\:L}}

So

#H_3PO_4

  • No of moles

\\ \tt\Rrightarrow n=0.015(12)=0.18moles

#Ba(OH)_2

\\ \tt\Rrightarrow n=0.1(3.5)=0.35mol

  • Barium hydroxide is more

Hence H_3PO_4 is the limiting reagent

3 0
3 years ago
Identify reagents necessary to convert cyclohexane into 1,3-cylohexadiene: notice that the starting material has no leaving grou
Vinvika [58]
<span>1,3-cylohexadiene i synthesized starting from cyclohexane in following 4 steps.

1) Free Radical Substitution Rxn:
 Halogenation of cyclohexane in the presence of UV yield chlorocyclohexane.

2) Elimination Rxn: Dehydrohalogenation of chlorocyclohexane yields cyclohexene.

3) Halogenation of Cyclohexene (Electrophillic Addition Rxn) gives 1,2-dihalocyclohexane.

4) Elemination Rxn: When dibromocyclohexane is treated with KOH and heated it gives 1,3-cyclohexadiene as shown below,</span>

4 0
3 years ago
2' A mixture containing 2.75 gof ammonium chloride (NH4cl) in 5.0 g of water was heated to dissolve the solid and then allowed t
Trava [24]

Answer:

55g NH₄Cl / 100g Water

Explanation:

Solubility of a substance define the amount of solute per solvent in a saturated solution. The solution can dissolve additional solute if heated.

In the problem, as the first crystal appears at 61°C the solubility in this temperature is the concentration of the solution, that is:

2,75g NH₄Cl / 5,0g water ₓ 100 = <em>55g NH₄Cl / 100g Water</em>

<em></em>

I hope it helps!

6 0
3 years ago
PLZ HELP THIS IS DUE TODAY!!!!!!
Goshia [24]
It would be letter C, because the molecules of solids can have a little vibration in their places.
The first one is for gas, so it's wrong. The second one is for liquids. And finally, the third one is right.
5 0
3 years ago
What are the three main parts of an atom and what are their charges?
Leviafan [203]

Answer:

Three main parts are Protons (pos charge) Neutrons (no charge) Electrons (negative charge) and the electron is found on the outside of the nucleus

Explanation:

8 0
3 years ago
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