The characteristic of water that is responsible for frost wedging is that it expands as it freezes and is denoted as option A.
<h3>What is Frost wedging?</h3>
This is referred to a type of physical weathering which is characterized by rocks being broken down into smaller particles through the freezing and thawing process.
This is possible because water is known to expand as it freezes thereby resulting in the expansion of the rocks which forms cracks as a result of frequent freezing and thawing processes.
This is therefore the most appropriate characteristic of water which makes it possible for frost wedging to take place.
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B).Proton acceptor did that help at all
Answer:
A compound
Explanation:
Chemical compound can be regarded as any substance made up of identical molecules which consists atoms of two or more than two chemical elements. For example four hydrogen atoms bonds with a carbon atom to give methane molecule which is a compound. It should be noted that A compound is a new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a physical reaction.
From the question, the molarity of the desired solution was given as 0.235 M while the volume of the solution is 250 mL. Molarity is a unit of concentration used for solutions. It is necessary to first define what molarity is to be able to answer the question. Molarity is defined as number of moles of solute divided by the volume of the solution.
In this case, the amount of solid KCl required to obtain a concentration of 0.235 M in a volume of 250 mL is to be determined. The molar mass of KCl will also be used as conversion factor from unit of moles to grams. The value is 74.5513 g/mol. The following equation is used:
0.235 mol/ L x 1 L/1000 mL x 250 mL x 74.5513 g/mol KCl = 4.3799 g KCl
Thus, 4.38 g KCl is required to prepare 250 mL of 0.235 M solution.
Answer:
C) Krypton is a noble gas, so it was difficult for chemists to find it, as though it was a secret.
Explanation: