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Nonamiya [84]
3 years ago
13

2. Which one is the modal class?

Chemistry
1 answer:
Sonja [21]3 years ago
7 0

Answer:

a.3-5 is the modal class.

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What would be the volume of a sample of Uranium with a mass of 1800g?
Yuki888 [10]

Answer:

V = 94.24 cm3

Explanation:

Uranium metal has a very high density of 19.1 g/cm3.

d = 19.1 g/cm3

m = 1800 g

m = V × d

=> V = m/d = 1800/19.1 = 94.24 cm3

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3 years ago
What do scientists who study the human microbiome hope to achieve?
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Answer:

Explanation:

Researchers hope to gain knowledge about how the microbiome contributes to health and disease states.

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Melting point of a substance is what kind of property?
Mrrafil [7]
It’s chemical I think
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3 years ago
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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
If a black ball is denser than a white ball of the same size, what does the black ball have??
yKpoI14uk [10]

Answer: The black ball will have more mass than the white ball.

Explanation: Density of a substance is defined as the ratio of mass and volume occupied by the substance.

Mathematically,

Density=\frac{Mass}{Volume}

We are given that the two balls are of same size, which means that the volume of both the balls are same. We are also given that the black ball is more dense than the white ball, which means that the black ball will have more mass.

As, Density\propto Mass

7 0
3 years ago
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