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4 years ago

What causes chemical weathering?

Physics

2 answers:

Leviafan [203]4 years ago

6 0

Rain water and air reacting with rocks causes chemical weathering...

julia-pushkina [17]4 years ago

4 0

hemical weathering is the process by which a material breaks down into its component elements through the action of a chemical agent. This type of weathering requires precise temperature conditions and the presence of a chemically-laden fluid. Substances capable of causing chemical weathering include water and acids.There are three types of chemical weathering: oxidation, dissolution and hydrolysis. Oxidation is the formation of rust on iron caused by prolonged contact with water. Dissolution involves acidic water and porous minerals, such as limestone and other soft minerals. This type of chemical weathering frequently occurs on gravestones, stone statues and building blocks made from porous rocks. The third type of chemical weathering is called hydrolysis. Like dissolution, hydrolysis involves the interaction of acidic water and minerals.Several secondary factors also promote chemical weathering. Minerals with small particle sizes are much more susceptible to this type of weathering as compared to those with large particles. The ambient climate and the passage of time also influence the scope and extent of chemical weathering. Natural organisms, such as bacteria, algae and fungi, are important catalysts in this type of weathering. Those that produce acid as a digestive by-product have a particularly large impact on the process.

You might be interested in

Mass refers to the gravitational force on the matter in contact with the surface of a planet

Arte-miy333 [17]

Answer: Yes and no.

Explanation: Mass is the amount of matter in an object, whereas weight is the force exerted on an object by gravity. Objects on the surface of the earth have weight, although sometimes the weight is difficult to measure.

8 0

4 years ago

What is the energy (in joules) and the wavelength (in meters) of the line in the spectrum of hydrogen that represents the moveme

soldi70 [24.7K]

Answer:

The energy is $4.57x10^{-19} J$ and the wavelength is $4.34x10^{-7}m$ for the line in the spectrum of hydrogen that represents the movement of an electron from Bohr orbit with n = 2 to the orbit with n = 5.

In what part of the electromagnetic spectrum do we find this radiation?

In the Ultraviolet part of the electromagnetic spectrum.

Explanation:

The energy of the absorbed photon can be known by the difference in energy between the two states in which the transition is happening (In this case from n = 2 to n = 5):

$E = E_{upper}-E_{lower}$ (1)

The permitted energy for the atom of hydrogen, according with the Bohr's model, is defined as:

$E_{n} = -\frac{13.606 eV}{n^{2}}$ (2)

Or it can be expressed in Joules, since $1eV = 1.60x10^{-19}J$

$E_{n} = -\frac{2.18x10^{-18} J}{n^{2}}$ (3)

Where the value $-2.18x10^{-18}$ represents the energy of the ground state¹ and n is the principal quantum number.

For the case of n = 2:

$E_{2} = -\frac{2.18x10^{-18} J}{(2)^{2}}$

$E_{2} = -5.45x10^{-19} J$

For the case of n = 5:

$E_{5} = -\frac{2.18x10^{-18} J}{(5)^{2}}$

$E_{5} = -8.72x10^{-20} J$

Replacing those values in equation (1) it is gotten:

$E = -8.72x10^{-20} J-(-5.45x10^{-19} J )$

$E = 4.57x10^{-19} J$

The wavelength can be determined by means of the Rydberg formula:

$\frac{1}{\lambda} = R(\frac{1}{n_{l}^{2}}-\frac{1}{n_{u}^{2}})$ (4)

Where R is the Rydberg constant, with a value of $1.097x10^{7}m^{-1}$

For this particular case $n_{l} = 2$ and $n_{u} = 5$ :

$\frac{1}{\lambda} = 1.097x10^{7}m^{-1}(\frac{1}{(2)^{2}}-\frac{1}{(5)^{2}})$

$\frac{1}{\lambda} = 1.097x10^{7}m^{-1}(0.21)$

$\frac{1}{\lambda} = 2303700m^{-1}$

$\lambda = \frac{1}{2303700m^{-1}}$

$\lambda = 4.34x10^{-7}m$

So the energy is $4.57x10^{-19} J$ and the wavelength is $4.34x10^{-7}m$ for the line in the spectrum of hydrogen that represents the movement of an electron from Bohr orbit with n = 2 to the orbit with n = 5.

In what part of the electromagnetic spectrum do we find this radiation?

In the Ultraviolet part of the electromagnetic spectrum.

Key terms:

¹Ground state: State of minimum energy.

8 0

3 years ago

The degree of hotness and coldness of th body is.......

frez [133]

Answer:

Explanation:

The degree of hotness and coldness of the body is called temperature.

8 0

3 years ago

What would happen to global warming if there were fewer greenhouse gasses in the atmosphere

Bas_tet [7]

Greenhouse gases are considered as one of the main reasons behind global warming on our planet earth. The poisonous gases emitted by the industries, vehicles and other medium are increasing the rate of global warming. When these type of emissions are controlled, then the global warming is bound to reduce. It has been scientifically proved that on days when vehicles are less on the roads or on days when industries are closed, the greenhouse gases are emitted less and this results in lesser amount of pollution. This in turn definitely helps to reduce global warming.

8 0

3 years ago

A World-class sprinter can reach a top speed of about 11.5 m/s in the first 18.0 m of a race. What is the average acceleration o

irina [24]

Answer

a = 3.674 m / s ^ 2

t = 3.13 s

Using the kinematic equations for the movement we have:

$h(t) = P_{0} + Vot + \frac{1}{2}at ^ 2$ (1)