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3 years ago

How does water cause weathering of a rock?

Chemistry

1 answer:

klio [65]3 years ago

7 0

Answer:

water wears it down over time, eroding it and weathering it. This usually happens to rocks in creekbeds or near bodies of water

hope this helps :)

Explanation:

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Determine the electrical work required to produce one mole of hydrogen in the electrolysis of liquid water at 298°K and 1 atm. T

Ostrovityanka [42]

Explanation:

The given data is as follows.

$\Delta H$ = 286 kJ = $286 kJ \times \frac{1000 J}{1 kJ}$

= 286000 J

$S_{H_{2}O} = 70 J/^{o}K$ , $S_{H_{2}} = 131 J/^{o}K$

$S_{O_{2}} = 205 J/^{o}K$

Hence, formula to calculate entropy change of the reaction is as follows.

$\Delta S_{rxn} = \sum \nu_{i}S_{i}_(products) - \sum \nu_{i}S_{i}_(reactants)$

= $[(\frac{1}{2} \times S_{O_{2}}) - (1 \times S_{H_{2}})] - [1 \times S_{H_{2}O}]$

= $[(\frac{1}{2} \times 205) + (1 \times 131)] - [(1 \times 70)]$

= 163.5 J/K

Therefore, formula to calculate electric work energy required is as follows.

$\Delta G_{rxn} = \Delta H_{rxn} - T \Delta S_{rxn}$

= $286000 J - (163.5 J/K \times 298 K)$

= 237.277 kJ

Thus, we can conclude that the electrical work required for given situation is 237.277 kJ.

6 0

4 years ago

Round off the following numbers to the number of significant figures (sf) indicated.

Flura [38]

Answer:

a. 7.52

b. 16.5

c. 85

d. 6.03

Explanation:

significant number exempts 0 as a number which explains the last one. The two significant numbers there are 6 and 3

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3 years ago

Read 2 more answers

Josie observed that when water is boiled in an open beaker it completely disappears, leaving the beaker dry. What can Josie conc

-BARSIC- [3]

That when water is boiled in a open beaker and it disappears that it evaporates into the air

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4 years ago

Please dont answer if you dont know.<br>It's the parts of a wave

Marina86 [1]

Answer:

1) wavelength
2) trough
3) amplitude
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Explanation:

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3 years ago

A car with a mass of 1,000 kg is moving at a speed of 20 m/s. What is the car's kinetic energy?

shtirl [24]

The answer would be 200000 J. the equation for kinetic energy is 1/2 mass times velocity squared. 1/2 of 1,000 is 500. and 20*20 is 400. So, multiply 400 by 500, and that gives you your answer,

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2 years ago

How does water cause weathering of a rock?​

How does water cause weathering of a rock?