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uysha [10]
3 years ago
10

The rate constant (k) for a reaction was measured as a function of temperature. a plot of lnk versus 1/t(in k) is linear and has

a slope of −9.20×103 k . you may want to reference (pages 642 - 648) section 14.5 while completing this problem. part a calculate the activation energy for the reaction.
Chemistry
1 answer:
NNADVOKAT [17]3 years ago
7 0

The Arrhenius equation is

K=Ae^-{\frac{Ea}{RT}}

so if we plot a graph between lnK (natural log of rate constant) and 1/T (inverse of temperature in kelvin)

The straight line equation will be

lnK = lnA - Ea/RT

Where

A = constant for a particular reaction at any temperature

R = gas constant = 8.314 J /molK

So as per this equation the slope of line will be = -Ea/R

Or

Ea = -slope X R

Ea = -(-9.20X10³X 8.314) =76.49kJ /mol

Answer: activation energy = 76.49 kJ /mol

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Dahasolnce [82]

Answer:

318.749g

Explanation:

The find the mass,

We use this formula

Number of mole = mass/ molar mass

Since number of mole = 3.25mol

Let the number of mass be x

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H - 1.00784 * 2= 2.01568

S - 32.065

O - 15.999 * 4 = 63.996

Note there are 2 moles of H and 4 moles of O and 1 mole of S

Molar mass of H2SO4 = 2.01568 + 32.065 + 63.996

= 98.07668g/mol

Number of mole= 3.25mol

3.25 = x / 98.07668

x = 3.25 * 98.07668

x= 318.749g

Hence, the number of mass is 318.749g

Hope it will help you.

7 0
3 years ago
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babunello [35]

All processes for which the temperature stays constant are described by Boyle's law.

Boyle's law is expressed as p1 * V1 = p2 * V2, where p1 and V1 are starting pressure and volume, respectively. The ultimate values of these gas parameters are p2 and V2.

Boyle's law formula can be stated in a variety of ways, depending on the parameter we want to estimate. Let's imagine we wish to determine the pressure that results from changing a gas' volume under isothermal conditions. The Boyle's law equation thus reads: p2 = p1 * V1 / V2 or p2 / p1 = V1 / V2.

As we can see, the final-to-initial pressure ratio is the opposite of the volume ratio.

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4 0
2 years ago
The alcohol functional group contains the elements of oxygen hydrogen and carbon.
saul85 [17]
It is FALSE. The alcohol or alwa ok functional group has a general formula of;
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Hope that helped. Have a nice day
3 0
3 years ago
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Observations:<br>Sodium hydroxide reacts with coper sulfate​
vaieri [72.5K]

Answer:

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6 0
3 years ago
A rigid vessel contains 2.5 mol of H2(g). How many grams of hydrogen are in the vessel.
aleksandr82 [10.1K]

Answer:

5 g of H₂ are contained in the vessel

Explanation:

A typical excersise of conversion:

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5 g of H₂ are contained in the vessel

4 0
3 years ago
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