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Marizza181 [45]
3 years ago
7

Which is usually associated with a faster reaction rate? A. shaking pepper into the reactants B. removing heat energy from the r

eactants C. using a highly concentrated solution in the reactants D. using a solid with a low surface area in the reactants
Chemistry
1 answer:
Andrews [41]3 years ago
3 0

Answer:

C. Using a highly concentrated solution of the reactants  

Explanation:

If the solutions are more concentrated, there will be more collisions per second between the reactants, so the rate will be faster.

A. is wrong. Pepper might make you sneeze, but it won't make the reaction go any faster.

B is wrong. Removing heat will cause the molecules to slow down, so fewer of them will have energy to get over the activation energy barrier.

D. is wrong. If a reactant has a small surface area, fewer of the other reactant molecules will be able to collide with it, so the reaction will slow down.

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Describe how visible spectroscopy could be used to determine the order of a reaction in which a single colorless reactant produc
d1i1m1o1n [39]

Answer:

Explanation:

In a reaction, where, one of the reactant produces a colored product, visible spectroscopy can be used to determined the order of a reaction, the change in concentration of the reactant which forms the colored product is determined by absorbance measurement over time. The data for the concentration and time are plotted on the y and x axis and If we get a straight line it is a zero-order reaction. If instead, a plot of ln[concentration] versus time gives a straight line, it is a first order reaction. However, If 1/concentration versus time gives a straight line, it is a second order reaction kinetics. The other reactants may be changed while keeping this reactant as constant and change on rate of the reaction is observed to see If the other reactant affects the reaction or not.

8 0
3 years ago
Technetium-99 is an ideal radioisotope for scanning organs because it has a half-life of 6.0 h and is a pure gamma emitter. supp
Nadusha1986 [10]

Answer: 20 mg Te-99 remains after 12 hours.

Explanation:  N(t) = N(0)*(1/2)^(t/t1/2)

                        N(t) = (80 mg)*(0.5)^(12/6)

N(t) = 20 mg remains after 12 hours

3 0
2 years ago
In order for the process to be endothermic, the energy required to break the lattice has to be _______ than the energy released
densk [106]

Explanation:

I honestly believe the answer is greater

8 0
3 years ago
Read 2 more answers
What action would you expect an atom of Aluminum to undergo?
KATRIN_1 [288]

Answer:

C. Lose three electrons to have a full outer shell  

Explanation:

Al is in Group 13 of the Periodic Table, so it has three valence electrons.

It must either lose three electrons or gain five to achieve a stable octet.

It is easier to lose three electrons than it is to gain five, so Al loses three electrons.

D. is wrong, for the same reason.

A. is wrong. If Al lost three electrons, it would be breaking into a stable inner shell.

C. is wrong. Al is a metal, so it will lose electrons in a reaction.

6 0
3 years ago
In a solution of a carbonated beverage the water is what? Solute, saturated, solvent or precipitate
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Https://us-static.z-dn.net/files/d49/33d4ec86853ef95e6f6c14242c663be4.png
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3 years ago
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