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3 years ago

For which of the reactions listed below will Gibbs free energy always be

Chemistry

2 answers:

Vanyuwa [196]3 years ago

3 0

Answer:

an exothermic reaction that Increase in entropy

jeka57 [31]3 years ago

3 0

Answer:C

Explanation:

an exothermix reaction increases in entropy

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you do 185 j of work pulling a cart up a ramp. if the ramp does 153 j of work what is the efficient of the ram

egoroff_w [7]

Efficiency of the ram is calculated by dividing the work done by the work or energy that is exerted to do so. This is calculated through the equation,

S = ((Wout) / (Win)) x 100%

Substiuting the known values to the equation.

S = (153 J)/(185 J) x 100%

Efficiency = 82.7%.

7 0

4 years ago

A particular form of electromagnetic radiation has a frequency of 8.11 x 10^14 hz. What is the energy in joules of one quantum o

quester [9]

<span>E = hxf, où h = constante de Planck = 6,626 x 10 ^ -34Js

E = 6,626 x 10 ^ -34 x 8.11 x 10 ^ 14 = 5.373 10^ -19 J </span><span>

Hope this answers your question, Kimmyers14!</span>

5 0

3 years ago

Read 2 more answers

What would the products be when aluminum chloride (which contains Al3+ and Cl- ions) is melted and electrolyzed? Write half equa

Hoochie [10]

The product of electrolysis : Al at cathode and Cl₂(chlorine) at anode

<h3>Further explanation</h3>

Given

Aluminum chloride compound

Required

The product of electrolysis

Solution

The rule :

The reaction at the cathode(the negative pole) :

1. the reduced active metal is water, other than that the metal will be reduced

2. H⁺ of the acid will be reduced

The reaction at the anode((the positive pole) :

1. if the electrodes are not inert then the metal is oxidized

2. If inert then:

a. OH⁻ from the base will be oxidized

b. The halogen metal will oxidize

In the electrolysis of molten AlCl₃ with an inert electrode, the cation will be reduced at the cathode and the anion will be oxidized at the anode

Cathode : Al³⁺ + 3e⁻ ⇒ Al(s)

Anode : 2Cl⁻⇒Cl₂(g) + 2e⁻

6 0

3 years ago

8. The rate constant for the reaction below is 6.2 x 10−5 mol L−1s−1. If the initial concentration of A is 0.0500 M, what is its

Aloiza [94]

Answer:

The concentration after 115 seconds is 0.0496 M

Explanation:

Applying integrated rate law for a first-order reaction, we will have;

$[A]_t = [A]_0e^{-kt}$

where;

$[A]_t$ is the concentration at a time t

$[A]_0$ is the initial concentration

k is the rate constant for the reaction

t is the given time

Given;

$[A]_0$ = 0.05 M

k = 6.2 x 10⁻⁵ mol L⁻¹s⁻¹

t = 115 seconds

Substitute these values and solve for $[A]_t$

$[A]_t = [A]_0e^{-kt} = (0.05)*e^{-(6.2X10^{-5}*115)}\\\\$

$[A]_t = (0.05)(0.9929) =0.0496 M$

Therefore, the concentration after 115 seconds is 0.0496 M

5 0

3 years ago

What effect do you think global warming might have on the availability of fresh water

Margaret [11]

Global Warming results in rising sea levels as the freshwater from the melted glaciers eventually runs into the ocean.

<h3 /><h3>What is Global Warming ? </h3>

A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants.

As the climate warms, harmful algal blooms happen more often and become more severe.

As the ocean warms, freshwater glaciers around Earth begin to melt at an unsustainable rate, which results in rising sea levels.

The freshwater from the melted glaciers eventually runs into the ocean.

Learn more about Global warming here ;

brainly.com/question/23569238

#SPJ1

8 0

3 years ago