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3 years ago

Which features may form as a result of erosion related to runoff? Select three options.

Chemistry

2 answers:

jenyasd209 [6]3 years ago

8 0

Answer:

Gullies, Rills, Tributaries

yaroslaw [1]3 years ago

6 0

Answer:

gullies

rills

tributaries

Are the correct answers!!

Explanation:

A gully is a landform created by running water, eroding sharply into soil, typically on a hillside.

A rill is a shallow channel cut into soil by the erosive action of flowing water.

A tributary is a stream or river that flows into and joins a main river.

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Analysis of a compound of sulfur, oxygen and fluorine showed that it is 31.42% S and 31.35% O, with F accounting for the remaind

Leya [2.2K]

Answer:

The molecular formula is SO2F2

Explanation:

Step 1: Data given

Suppose the mass of compound = 100 grams

The compound contains:

31.42 % S = 31.42 grams S

31.35 % O = 31.35 grams O

100 - 31.42 - 31.35 = 37.23 F

Molar mass of S = 32.065 g/mol

Molar mass F = 19.00 g/mol

Molar mass O = 16.00 g/mol

Step 2: Calculate moles

Moles = mass / molar mass

Moles S = 31.42 grams / 32.065 g/mol

Moles S = 0.9799 moles

Moles 0 = 31.35 grams / 16.00 g/mol

Moles 0 = 1.959 moles

Moles F = 37.23 grams / 19.00 g/mol

Moles F = 1.959 moles

Step 3: Calculate mol ratio

We divide by the smallest amount of moles

S: 0.9799 / 0.9799 = 1

F: 1.959/ 0.9799 = 2

O : 1.959 / 0.9799 = 2

The empirical formula is SO2F2

This formula has a molecular mass of 102.06 g/mol

This means the empirical formula is also the molecular formula : SO2F2

3 0

2 years ago

Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.

Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

Explanation:

$Q=mc\Delta T$

Where:

Q = heat absorbed or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

Specific heat of copper = c = 0.385 J/g°C

ΔT = 39°C - 22°C = 17°C

Heat absorbed by the copper :

$Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J$

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

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3 years ago

Clouds are made up of tiny droplets of water. Which two spheres are clouds a

MaRussiya [10]

C & D, clouds are apart of the Hydro and Atmosphere!

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3 years ago

What are the two parts of a solution?

Vlad [161]

The 2 parts or components that make up a solution would be the solute and the solvent.

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2 years ago

A short-lived structure formed during a collision is a(n)

Jet001 [13]

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3 years ago

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