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Elis [28]
3 years ago
5

Which particles that make up an atom are involved in nuclear reactions?

Chemistry
1 answer:
Bezzdna [24]3 years ago
6 0

Answer:

protons and neutrons- second choice

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What is the total number of valence electrons in an atom of germanium in the ground state?
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3 years ago
3 A soil has 70% sand, 20% silt
Kisachek [45]

Today, as part of the series of posts on soils, we are going to look at ‘soil texture’. Soil forms the basis for all life but it’s important to know about its mineral constitution as well as its biological profile.

Texture refers to the ‘feel’ of the soil. This is affected by the constituent materials found within it, specifically sand, silt and clay particles. A coarse sand will feel gritty but a wet clay will feel heavy and sticky. The texture of a soil has a direct impact on the way the soil reacts to certain environmental conditions – for example, towards drought or heavy rain (with sandy soils more freely draining).

There is a big difference in the size of the different particles.

Coarse sand = diameter 2-0.2mm

Fine sand = diameter 0.2-0.02mm

Silt = diameter 0.02-0.002mm

Clay = diameter less than 0.002mm

Note how the clay particles are much smaller than the sand particles – this is important as it means the total surface area of a clay soil is much greater and so the capacity to hold water is also much greater.

Between the sand, silt and clay particles there are lots of pores. In fact a soil as a whole is generally 45% mineral, 5% organic matter (depending on the soil) and 50% pore space through which air and water can pass.

Sand –

Made up of weathered primary rock minerals.

The particles are irregular in outline.

They are large and so do not pack together easily.

Large pore spaces in between.

Air gets in very easily and water flows rapidly through it.

Silt –

7 0
3 years ago
Grains of sugar dissolve more quickly in tea than do sugar cubes. Which answer correctly describes why this occurs?
AnnZ [28]

Answer:

sugar cube is at great pressure

Explanation:

this is because great pressure means its more solid

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5vocabuoart word in with meaning the module​
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Answer:

yo gotta be more specific

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3 years ago
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