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Cerrena [4.2K]
3 years ago
12

Which phrases describe clastic sedimentary rocks? Check all that apply.

Chemistry
1 answer:
Romashka [77]3 years ago
5 0

Explanation:

A clastic sedimentary rock is a rock that is formed from pre-existing rock materials and minerals. This materials have been transported to their new positions by the agents of denudation.

  1. Clastic sedimentary rocks are made up of rock fragments predominantly.
  2. The matrix is usually remnants of other rocks.
  3. A cementing material can form between clasts and holds them in place. Cements are usually iron oxides, calcite e.t.c.
  4. These rock types are usually formed from mechanincal weathering of rocks
  5. Mechanical weathering breaks down rocks into chunks.
  6. Examples are breccia, conglomerates, e.t.c.

Learn more:

Sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

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When a 3.00 g 3.00 g sample of KBr KBr is dissolved in water in a calorimeter that has a total heat capacity of 1.36 kJ ⋅ K − 1
cupoosta [38]

Answer:

Molar heat of solution of KBr is 20.0kJ/mol

Explanation:

Molar heat of solution is defined as the energy released (negative) or absorbed (Positive) per mole of solute being dissolved in solvent.

The dissolution of KBr is:

KBr → K⁺ + Br⁻

In the calorimeter, the temperature decreases 0.370K, that means the solution absorbes energy in this process. The energy is:

q = 1.36kJK⁻¹ × 0.370K

q = 0.5032kJ

Moles of KBr in 3.00g are:

3.00g × (1mol / 119g) = 0.0252moles

Thus, molar heat of solution of KBr is:

0.5032kJ / 0.0252moles = <em>20.0kJ/mol</em>

3 0
3 years ago
What is the name for the compound with the formula ncl3?
stellarik [79]
Nitrogen trichloride is the name of this compound
4 0
3 years ago
Which of the following statements about the formation of a solution is true?
bekas [8.4K]

<span>In the formation of a solution, energy is required to overcome the forces of attraction between the solvent particles. The first step is for the solvent particles to move in order for solute particles to enter the system. This process is endothermic where energy flows into the system. The second step is when solute particles must separate from other solute particles. Lastly, the solute should move between solvent particles.</span>

4 0
3 years ago
Tell me a hypothesis for the corrosion experiment for iron nails?
Nastasia [14]
The more acidic the substance is, the more the iron nails will corrode (this obviously depends on what your experiment is but hope this helped in some way)
5 0
3 years ago
What is the bond dissociation energy for breaking all the bonds in a mole of o2 molecules?
djverab [1.8K]
<h3>Answer:</h3>

498 kj/mol

<h3>Explanation:</h3>
  • Chemical reactions occur as a result of bond breaking and bond formation.
  • The bonds in reactants are broken and atoms are rearranged to form new bonds.
  • During bond breaking energy is absorbed to break the bonds of reactants while bond formation involves the release of energy during the formation of new bonds.

In our case;

In 1 mole of the Oxygen molecule, there is one O=O bond

Energy absorbed to break O=O is 498 kJ/mol

Therefore, the ΔH required to break all the bonds in one mole of Oxygen(O₂) molecules is 498kJ/mol.

Note that, bond breaking is endothermic since energy is absorbed  from the surroundings.

8 0
3 years ago
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