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alina1380 [7]
3 years ago
11

Quincy wants to see a real example of rock weathering. Where would be the best place for him to go? A. up on the roof of his hou

se B. to a pond down the street C. downstairs in his basement D. up in the mountains
Chemistry
1 answer:
zhannawk [14.2K]3 years ago
4 0

Answer:

Option (D)

Explanation:

Weathering is usually defined as the disintegration of rocks at the surface of the earth. This break down of rocks is mainly caused by the geological processes that occur on the earth's surface. This process results in the formation of sediments that are transported and deposited in a new environment.

This weathering process primarily takes place in three different ways such as-

  • Physical weathering- Here, the rocks are broken down by the physical agents such as wind, water, ice.
  • Chemical weathering- Here the rocks are broken down when interacts with the chemical containing water.
  • Biological weathering- here, the rocks are broken down due to the activities done by organisms such as plants and animals.

In the given condition, Quincy can see a real example of rock weathering in the high mountainous region, as in the mountainous region the rocks are frequently weathered and eroded by the agents such as wind, water, and ice.

Thus, the correct answer is option (D).

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Describe what acceleration is in words and give the formula (a = ???)
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Answer:

Acceleration = (v Final −v Initial)/(t Final −t Initial). Where v stands for velocity and t stands for time. In algebraic notation, the formula can be expressed as: a=Δv/Δt; Acceleration can be defined as the rate of change of velocity with respect to time.

7 0
3 years ago
Propane C3H8 is a hydrocarbon tht is commonly used as a fuel
Mariulka [41]

Answer:C3H8 +5O2-- >3CO2+4H2O, 330L of air,Hof C3H8= 2323.7 KJ/mol,dT=75.30

Explanation:

First We need to find a balanced equation to depict the combustion of the propane:

C3H8 +5O2-- >3CO2+4H2O

b)

25g C3H8*\frac{1mol C3H8}{44gC3H8} *\frac{5molO2}{1molC3H8}* \frac{32gO2}{1mol O2}*\frac{1L air}{0.275g}

330L of air

25 g C3H8 are equal to 44g and 5 mol of O2 will react with a mol of C3H8, each mol of O2 weigh 32g and for each L of air contains 0.275g of O2

c) Hof C3H8= -(-285.8\frac{KJ}{mol}*4mol +-393.5*3mol

the enthalpy of formation of propane will be the negative of the sum of the enthalpy of formation multiplied by the mols of the H2O and CO2

Hof C3H8= 2323.7 KJ/mol

d) We know that each 44g of C3H8(1mol) transfer 2219.2 KJ then:

25g\frac{2219.2KJ}{44g C3H8} = 1260.9KJ

We use the equation of heat transfered

Q=mCpdT

1260.9KJ= 4KJ *4.186KJ/Kg*°C  *dT

We clear the equation

Q/mCp=dT

dT=75.30

4 0
3 years ago
Which of the following did your answer include?
IgorC [24]

Answer:

check all 4

Explanation:

3 0
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Help me find the balanced chemical equation <br>CH4+O2-&gt; CO2 +H2O​
svlad2 [7]
CH4 + O2 = CO2 + H2O - Chemical Equation Balancer.
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3 years ago
What happens at the anode in an electrolytic cell?
Llana [10]

Answer:

D. Oxidation

Explanation:

In an <em>electrolytic cell</em>, oxidation (the loss of electrons) takes place at the anode. At the cathode reduction takes place.

A mnemonic technique that could be used is that the process that starts with a vowel (Oxidation) takes place at the place that also starts with a vowel (Anode).

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3 years ago
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