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valentinak56 [21]
3 years ago
6

Which of the following are some examples of rapid environmental changes?

Chemistry
2 answers:
Zina [86]3 years ago
6 0
I think it’s weather
Marysya12 [62]3 years ago
6 0

Answer: Fires, Weather and Landslides are examples of rapid environmental changes

Explanation:

Environmental changes are currently one of the world’s major issues. Rapid changes in the environment is mostly attributed to anthropogenic factors in the environment such as CO2 emission, gas combustion in industries soil erosion from man-made inputs leading to landslides from road networks, hence the changes in the weather condition as well as fire, and landslides. As at 40 – 60 million years ago during the cretacious period, the earth experienced warmer conditions conducive enough for habitation, whereas existing conditions now in the 21st century are colder, producing harsh conditions that are sometimes considered to be bad to breath in. Hence the reason why Fires arising from deforestation, landslides from bad man-made planning in constructional projects and Climate change causing a depletion in the Ozone layer are considered to be an example of rapid environmental changes.

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Calculate the molar mass of each of the following:
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Explanation:

Molar mass

The mass present in one mole of a specific species .

The molar mass of a compound , can easily be calculated as the sum of the all the individual atom multiplied by the number of total atoms .

(a) S₈

Molar mass of of the atoms are -

sulfur, S = 32 g/mol.

Molar mass of  S₈ = 8 * 32 g/mol.  = 256 g/mol.

(b) C₂H₁₂

Molar mass of of the atoms are -

Hydrogen , H = 1 g/mol

Carbon , C = 12 g/mol

Molar mass of C₂H₁₂ = ( 2 * 12 ) + (12 * 1 ) = 36 g /mol

(c) Sc₂(SO₄)₃

Molar mass of of the atoms are -

sulfur, S = 32 g/mol.

oxygen , O = 16 g/mol.

scandium , Sc = 45 g/mol.

Molar mass of Sc₂(SO₄)₃ = (2 * 45 ) + ( 3 *32 ) + ( 12 * 16 ) = 378 g /mol  

(d) CH₃COCH₃ (acetone)

Molar mass of of the atoms are -

Carbon , C = 12 g/mol

oxygen , O = 16 g/mol.

Hydrogen , H = 1 g/mol

Molar mass of CH₃COCH₃ (acetone) = (3 * 12 ) + ( 1 * 16 ) + ( 6 * 1 ) = 58g/mol

(e) C₆H₁₂O₆ (glucose)

Molar mass of of the atoms are -

Carbon , C = 12 g/mol

oxygen , O = 16 g/mol.

Hydrogen , H = 1 g/mol

Molar mass of C₆H₁₂O₆ (glucose) = ( 6 * 12 ) + ( 12 * 1 ) + ( 6 * 16 ) = 108g/mol.

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