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sergiy2304 [10]
4 years ago
14

Which analogy can best be likened to the activation energy of a chemical reaction?

Chemistry
1 answer:
olganol [36]4 years ago
6 0
The activation energy of a reaction is the minimum energy that must be overcome in order for the reaction to take place. One way of reaching the activation energy is by manipulating the process conditions like pressure or temperature. But the most common method is by adding an enzyme. An enzyme speeds up the rate of the reaction but does not actively take part in it.

An analogy would be pushing heavy wooden block down a slope. No matter how many people push on it, the block won't move because of friction. But if you spill oil on the floor, the block would effortlessly move down the slope. The oil here is like an enzyme in a reaction.
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Place the butane lighter in the sink or tub and let it rest there until needed. why do we soak the lighter in the water bath?
Genrish500 [490]

Answer:

To regulate the gas pressure in the lighter tank and avoid build-up of pressure.  

Explanation:

  • First, you need to understand the properties of this organic molecule. Butane. C₄H₁₀ is a colorless, odorless, but HIGHLY FLAMMABLE liquefied gas. The liquid is flammable at 25⁰C whilst the vapor is flammable at 15⁰C. As you can see, this is an extremely flammable gas. It has a high vapor pressure (tendency by liquids to escape as gas molecules)  
  • Any external heat source induces a pressure build up that might cause the gas to explode when there is an open flame.
  • Combining the two points above, a thermo-regulated water bath that has a lower temperature (below 15⁰C) will be need to prevent the pressure build up and ensure that any leakage will not have a high vapor pressure.
6 0
3 years ago
You have a sample of each of the following five metals, with the mass and density
Sindrei [870]

Answer:

E) Silver, mass = 420 g, d = 10.5 g/cm.

Explanation:

Hello,

In this case, since the density is defined by:

\rho =\frac{m}{V}

Given the mass and density, we compute the volume via:

V=\rho *m

Thus, for each vase we have:

A) V=135g*2.7g/cm^3=364.5cm^3

B) V=305g*8.92g/cm^3=2720.6cm^3

C) V=240g*7.86g/cm^3=1886.4cm^3

D) V=75g*1.74g/cm^3=130.5cm^3

E) V=420g*10.5g/cm^3=4410cm^3

In such a way, the largest volume corresponds to E) Silver, mass = 420 g, d = 10.5 g/cm.

Best regards.

7 0
3 years ago
Dinitrogen pentoxide is used in the preparation of explosives. If 7.93 mol of
Tpy6a [65]

The volume of O₂ produced: 84.6 L

<h3>Further explanation</h3>

Given

7.93 mol of  dinitrogen pentoxide

T = 48 + 273 = 321 K

P = 125 kPa = 1,23365 atm

Required

Volume of O₂

Solution

Decomposition reaction of dinitrogen pentoxide

2N₂O₅(g)→4NO₂(g)+O₂ (g)

From the equation, mol ratio N₂O₅ : O₂ = 2 : 1, so mol O₂ :

= 0.5 x mol N₂O₅

= 0.5 x 7.93

= 3.965 moles

The volume of O₂ :

\tt V=\dfrac{nRT}{P}\\\\V=\dfrac{3.965\times 0.082\times 321}{1.23365}\\\\V=84.6~L

5 0
4 years ago
An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the ta
katrin2010 [14]

Answer:

you would find it in section 3 as these are semi-metals

Explanation:

3 0
3 years ago
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