3 years ago

RIGHT ANSWER GETS BRAINLIEST+FIVE STARS!

2 answers:

5 0

I believe your answer is C. Dissolving of limestone, as because this is a type of chemical weathering I believe

Please correct me if wrong
Have a Nice Day! =D

Reptile [31]3 years ago

4 0

C is not mechanical weathering. It is chemical weathering.

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Carbon is allowed to diffuse through a steel plate 11 mm thick. The concentrations of carbon at the two faces are 0.88 and 0.41

Serhud [2]

Answer:

The temperature is 2584.5 K

Explanation:

Given:

Activation energy $Q = 80000$ $\frac{J}{mol}$

Preexponential $D= 6.2 \times 10^{-7}$ $\frac{m^{2} }{s}$

Diffusion flux $J = 6.4 \times 10^{-10}$ $\frac{kg}{m^{2} s}$

Thickness of plate $\Delta x = 11 \times 10^{-3}$ m

Concentration of carbon at two faces $\Delta C = (0.88 - 0.41 ) = 0.47$ $\frac{kg}{m^{3} }$

From the formula of temperature in terms of diffusion flux,

$T = (\frac{Q}{R} ) \frac{1}{\ln (\frac{D\Delta C}{J\Delta x} )}$

Where $R =$ 8.314 $\frac{J}{mol.K}$ ( gas constant )

Put the values and find the temperature,

$T = (\frac{80000}{8.314} ) \frac{1}{\ln (\frac{6.2 \times 10^{-7} \times 0.47 }{6.4 \times 10^{-10}\times 11 \times 10^{-3} } )}$

$T = 2584.5$ K

Therefore, the temperature is 2584.5 K

8 0

3 years ago

The electron drift speed in a 1.2-mm-diameter gold wire is 5.00 10-5 m/s. how long does it take 1 mole of electrons to flow thro

Vlada [557]

Twenty four minutes per second

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3 years ago

A truck travels down the highway at a speed of 110 km/hr. How long does the trip last if the truck covered 2200km?

vivado [14]

It'll last 20 hours. If it travels 110 miles in one hours, 110 times 20 equals 2,200.

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2 years ago

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Afina-wow [57]

Answer:

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