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MrRissso [65]
3 years ago
8

1. Determine if the following statements are true or false (each question is worth one point). The rate law for an overall react

ion can be written using the coefficients from the overall reaction The rate determining step of the reaction is alwaysthe first step of the reaction A catalyst is a species that is added to the reaction, lowers the activation energy of a reaction, shows up in the rate law (most of the time), and will be in the overall balanced equation Tries 0/45
Chemistry
1 answer:
Basile [38]3 years ago
3 0

Answer:

1. F

2. F

3. F

Explanation:

<em>Determine if the following statements are true or false. </em>

  1. <em>The rate law for an overall reaction can be written using the coefficients from the overall reaction.</em> FALSE. The rate law includes the reaction orders, which have to be determined experimentally and may or may not be equal to the coefficients of the overall reaction.
  2. <em>The rate-determining step of the reaction is always the first step of the reaction.</em> FALSE. The rate-determining step is always the slowest step.
  3. <em>A catalyst is a species that is added to the reaction, lowers the activation energy of a reaction, shows up in the rate law (most of the time), and will be in the overall balanced equation.</em> FALSE. A catalyst does lower the activation energy of the reaction, but it doesn't show up in the rate law nor the overall balanced equation.
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Marianna [84]

Answer:

W = -262 J.

Explanation:

Hello there!

In this case, according to the given information, we can recall the definition of work in terms of constant pressure and variable volume as follows:

W=P(V_2-V_1)

So we plug in the given pressure and volumes to obtain:

W=0.822atm(1.20L-4.35L)\\\\W=-2.60atm*L

Now, we convert this number to J (Pa*m³) by using the shown below conversion factor:

W=-2.60atm*L*\frac{101325Pa}{1atm} *\frac{1m^3}{1000L}\\\\W=-262J

Regards!

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klemol [59]

Answer:

The equivalent circuit for the electrode while the electrolyte gel is fresh

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Now as the electrolyte gel start to dry out the resistance R_s of the gel begins to increase and this starts to limit the flow of current . Now when the gel is then completely dried out  the resistance of the gel R_s then increases to infinity  and this in turn cut off flow of current.

The diagram illustrating this is shown on the second uploaded image

Explanation:

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how many grams of antifreeze would be required per 500 g of water to prevent the water from feezing at a temperature of -39° C​
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Explanation:

Freezing point depression in a solvent (In this case, water) occurs by the addition of a solute. The law is:

ΔT = Kf × m × i

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ΔT is change in temperature (0°C - -20°C = 20°C)

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m is molality of solution (moles solute / 0.5 kg solvent -500g water-)

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Replacing:

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