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taurus [48]
3 years ago
11

PLEASE HELP ASAP :)

Chemistry
2 answers:
notka56 [123]3 years ago
7 0

Answer:

<em>d</em>

Explanation:

<em>a p e x :) i just took it</em>

slavikrds [6]3 years ago
5 0

Answer:

D

Explanation:

I just took the quiz on a pex

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Q1: Erosion and weathering are often confused. How is erosion different from weathering? Give an example of each.
stepan [7]

Explanation:

1.

Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils whereas erosion is the movement of weathered materials from one area to the other.

Erosion moves weathered materials and it causes them to change position. For example loose chips of rocks broken down as the rock weakens through alternate wetting and drying in tropical regions will remain in-situ until the agents of erosion comes to carry them away. The breaking is weathering and the carrying is erosion.

Learn more:

Wind erosion brainly.com/question/2115729

2.

Examples of mechanical weathering:

  •   Frost action
  •   Pressure release

Examples of chemical weathering:

  • Oxidation
  • Carbonation

There are two types of weathering:

  • In mechanical weathering, a rock disintegrates into smaller chunks by the action of wind, water and glacier. For example in temperate and polar regions, water within rocks freezes. When water freezes it expands and causes tension within the rock. When temperature drops, water melts and the tension is relieved. This process causes a rock to crack. The crack will eventually become wider with time.
  • In chemical weathering, a rock decomposes by the action of chemicals formed in the rock. In karst regions where limestone forms, combination of rain water and carbon dioxide forms weak carbonic acid that reacts with calcite in limestone.

Learn more:

Erosion brainly.com/question/2473244

#learnwithBrainly

6 0
3 years ago
the empirical formula for a compound used as a green paint pigment is C2H3As3Cu2O8. The molar mass of its molecular formula was
melisa1 [442]

Answer:

Molecular formula = C₄H₆As₆Cu₄O₁₆

Explanation:

Given data:

Empirical formula = C₂H₃As₃Cu₂O₈

Molar mass of compound = 1013 g/mol

Molecular formula = ?

Solution:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Empirical formula mass  of C₂H₃As₃Cu₂O₈ is 506.897 g/mol

by putting values.

n = 1013 / 506.897

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2 (C₂H₃As₃Cu₂O₈)

Molecular formula = C₄H₆As₆Cu₄O₁₆

3 0
3 years ago
3. What is the mass of 5 moles of Hydrogen sulfate?I
solong [7]

Answer:

490

98 for 1 mole, Hence for 5 moles 5 X 98 =490.

Explanation:

Brainliest please?

3 0
3 years ago
How are the properties of water affected by hydrgen bonding?
olasank [31]
The hydrogen bonds that form between water molecules account for some of the essential and unique properties of water. The attraction created by hydrogen bonds keepswater liquid over a wider range of temperature than is found for any other molecule its size.

Hope this helped!
4 0
3 years ago
If a system requires 150 J of input work and produces 123 J of output work, what's its efficiency? A. 72% B. 122% C. 82% D. 92%
STALIN [3.7K]
The answer is C. 82......
4 0
3 years ago
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