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3 years ago

How does rock become soil?

Chemistry

2 answers:

Makovka662 [10]3 years ago

7 0

I *think* through weathering and erosion. Hope this helped

Eva8 [605]3 years ago

3 0

Rocks at Earth's surface are attacked by rain and wind. They are also attacked by ice. Pieces of rock are broken off. This is called weathering. it happens over thousands of years.

There are two main ways in which rock breaks down to form soil:

Physical weathering

Chemical weathering

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How many H2 and O2 molecules do you need to make exactly 4 water molecules with no leftovers?

vlabodo [156]

You need 4 H2 molecules and 2 O2 molecules.
This is because water is H2O which is 2 Hydrogen and 1 Oxygen so if you want to make 4 water molecules, you’ll need 8 hydrogen and 4 oxygen.
Given H2 you need 4 because 4•2 is 8 and for O2 you need 2 because 2•2 is 4.
I hope this makes sense.

3 0

3 years ago

Explain, in terms of intermolecular forces, why ammonia has a higher boiling point than the other compounds in the ta

Kobotan [32]

Answer is: ammonia has a higher boiling point because it has stronger intermolecular forces.

Intermolecular forces are the forces between molecules. The stronger are intermolecular forces, the higher is boiling point of compound, because more energy is needed to break interaction between molecules.
There are several types of intermolecular forces: hydrogen bonding, ion-induced dipole forces, ion-dipole forces andvan der Waals forces.

7 0

3 years ago

How many atoms are found in the chemical formula below

Stolb23 [73]

Answer:

2 atoms

Explanation:

There are 2 atoms in element NaCl. This is because there is 1 atom of Na (sodium) and 1 atom of Cl (chlorine) in each NaCl molecule. Elements by themselves do not have a "number of atoms"- if you're talking about the atomic number, it's the number of protons (or electrons in a neutral atom) of an element.

6 0

3 years ago

Read 2 more answers

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. This combustion r

Serjik [45]

Answer:

CH₃O

Step-by-step explanation:

1. Calculate the mass of each element

Mass of C = 1.45 mg CO₂ × (12.01 mg C/44.01 mg CO₂) = 0.3957 mg C

Mass of H = 0.89 mg H₂O × (2.016 mg H/18.02 mg H₂O) = 0.0996 mg H

Mass of O = Mass of compound - Mass of C - Mass of H = (1.55 – 0.3957 – 0.0996) mg = 1.055 mg

2. Calculate the moles of each element

Moles of C = 0.3957 mg C × 1mmol C/12.01 mg C = 0.03295 mol C

Moles of H = 0.0996 mg H × 1 mmol H/1.008 mg H = 0.0988 mol H

Moles of O = 1.055 mg O × 1 mmol O/ 16.00 mg O = 0.06592 mol O

3. Calculate the molar ratios

Divide all moles by the smallest number of moles.

C: 0.032 95/0.032 95 = 1

H: 0.0988/0.032 95 = 2.998

O: 0.065 92/0.032 95 = 2.001

4. Round the ratios to the nearest integer

C:H:O = 1:3:2

5. Write the empirical formula

The empirical formula is CH₃O.

4 0

4 years ago

How would a physicist be involved in addressing concerns about air pollution

AURORKA [14]

Air pollution is the addition of impurities to the atmosphere. A physicist would be concerned because pollutants can reduce sunlight reaching the earth and this quantity, radiation, would fall under the scope of a physicist. Physicists might also be concerned with the absorption of heat by certain pollutants. They would be concerned with studying how much heat is absorbed by each molecule to ascertain the impact of the entire contamination in the atmosphere.

7 0

4 years ago