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fomenos
4 years ago
9

Acidic water can react with limestone to break the rock down and form caves in the Earth's surface. This is an example of ______

_, which happens _______ over time.
Chemistry
2 answers:
blagie [28]4 years ago
7 0

Answer:

Filling in the blank, this is an example of <u>chemical weathering</u> which happens <u>to rocks</u> overtime.

Explanation:

Chemical weathering occurs when rocks are disintegrated by chemicals.

Rain water becomes acid rain when it reacts with carbon dioxide in the atmosphere (to form carbonic acid, HCO3).

When acidic rainwater falls and stays on rocks, chemical reactions take place with the minerals present in the rock, causing the rock to weather.

Areas with immense carbon dioxide and sulphur dioxide pollution increases rain water acidity, which in turn causes moisture in the atmosphere to dissolve these gases and produce acid rain.

konstantin123 [22]4 years ago
6 0

Answer:

Chemical weathering; to exposed rock surfaces.

Explanation:

Weathering involves the process in which rocks are being broken down that is to say the wearing and dissolution of exposed rock surfaces. And one of the agents of weathering is acid. There are different types of weathering but the one that concerns this question is known as chemical weathering.

Chemical weathering occurs when Acidic gas such as Carbondioxide combines with water vapour in the atmosphere to produce acidic rain which is known as the carbonic acid. When this acidic rain react with limestone it can form caves.

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Dima020 [189]

Answer:

B

Explanation:

conduction is the transfer of heat between objects that touch

8 0
3 years ago
Find the volume of a box with length 25 cm, height 25 cm and width 1.0 m. Volume
mariarad [96]

The volume of a box with length 25 cm, height 25 cm and width 1.0 m is 0.0625m³.

Volume of the box which is a cuboid can be calculated by multiplying the length, breadth and height of the given box.

Volume of the box is given by the product of the length of the box, Height of the box and Breadth or width of the box.

Since, the box is a cuboid, hence the formula is given by the products of length, breadth and height.

Given,

length of the box= 25cm = 0.25m

Height of the box =25cm = 0.25m

width of the box= 1m

Volume = length × width × height of box

Volume = 0.25 × 0.25 × 1

Volume = 0.0625m³

The volume of the box is 0.0625m³.

Learn more about Volume here, brainly.com/question/23118276

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4 0
2 years ago
Which of these is a mixture?<br> A)potassium<br> B)salad<br> C)water H20<br> Dsugar C12H22O11
Lelu [443]
A salad is a mixture but h2o is a mixture of molechules
8 0
4 years ago
If I have 31 liters of helium in a balloon at 9°C and increase the temperature of the balloon to 28°C, what will the new volume
Ede4ka [16]

Answer: The new volume of the balloon is 33 liters while T2 is 301K

Explanation:

Initial volume of helium V1 = 31 liters

Initial temperature T1 = 9°C

Convert temperature in Celsius to Kelvin

( 9°C + 273°C = 280K)

Final temperature T2 = 28°C

( 28°C + 273°C = 301K)

Final volume V2 = ?

According to Charle's law, the volume of a fixed mass of a gas is directly proportional to the temperature.

Mathematically, Charles' Law is expressed as: V1/T1 = V2/T2

31/280 = V2/301

To get the value of V2, cross multiply

V2 = (31 x 301) / 280

V2 = 9331 / 280

V2 = 33.325 liters (approximated to 33liters)

Thus, the new volume of the balloon is 33 liters while T2 is 301K

8 0
4 years ago
The wavelength of the violet light emitted from a hydrogen atom is 410.1 nm. This light is a result of electronic transitions be
VashaNatasha [74]

Answer:

e. 4.847 x 10-19 J

Explanation:

From the given information:

The equation connecting the photon energy and the wavelength is:

E_{photon } = \dfrac {hc}{\lambda}

where;

planck's  \ constant  \ (h)= 6.626 * 10 ^{-34} J.s

velocity  \ of \  light \  (c) = 3.00 * 10^8 m/s

wavelength \lambda = 410.1 \ nm \times \dfrac{10^{-9} \ m}{1 \ nm}

\lambda = 4.101 \times 10^{-7} \ m

To determine the photon energy of violet light

E_{photon } = \dfrac {(6.626 \times 10^{-34} J/s ) \times (3.00 \times 10^8 \ m/s) }{4.101 \times 10^{-7} \ m}

= 4.847 × 10⁻¹⁹ J

4 0
3 years ago
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