How many elements are found in the following chemical equation? K + Cl → KCl A. 1 B. 2 C. 3 D. 0
2 answers:
Answer: Option (B) is the correct answer.
Explanation:
An element is defined as a substance that contains same type of atoms.
For example, element K contains only atoms of potassium.
Whereas a substance in which two or more different elements chemically combine together in a fixed ratio by mass is known as a compound.
For example, KCl contains atoms of K and Cl in 1 : 1 ratio. Hence, it is a compound.
Therefore, in the chemical reaction, there are only two elements which are K and Cl.
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This problem is providing the mass-volume percent of a formic acid solution so its molarity is required and found to be 0.313 M after the following calculations.
<h3>Molarity</h3>In chemistry, units of concentration provide a measurable understanding of the relationship between the relative amounts of both solute and solvent. In the case of molarity, one must relate moles of solute and liters of solution as follows:
In such a way, when given this mass-volume percent of 1.44% for the formic acid in the solution, one can assume there is 100 mL of solution and 1.44 g of solute (formic acid), which means one must convert the volume to liters and the mass to moles with:
Finally, we plug in these numbers in the equation for the calculation of molarity:
Learn more about molarity: brainly.com/question/10053901