HELP ASAP PLEASE!!! :)
1 answer:
You might be interested in
Answer: The correct answer is A. Molality. It is the concentration expressed as moles of solute per kilogram solvent. It is most commonly used in solving problems involving Colligative Properties (e.g. boiling point elevation, freezing point depression). Other ways to express concentration are Molarity, Mole Fraction, Parts per Million, Parts per Billion, and Normality.
Further Explanation
B. Mole Fraction is the ratio of the moles of a solute to the total moles of the solution. This unit of concentration is expressed as:
C. Molarity is the most common ways of expressing concentration. It is the amount of solute per liter of solution and is expressed as:
D. ppm (or parts per million) is used for very dilute solutions. It is expressed as the mass of solute in milligrams per liter of the solution:
Learn more
1. Learn more about Molarity brainly.com/question/9183916
2. Learn more about Colligative Properties brainly.com/question/1257312
3. Learn more about Solution brainly.com/question/7932885
Keywords: molarity, molality, mole fraction, parts per million
Answer:
The correct answer is option C.
Explanation:
Isoelectronic species are those atoms or ions which same number of electrons.But they differ in physical and chemical properties.
Atomic number of nitrogen atom is 7.
Number electron in nitride ions =
Atomic number of oxygen atom is 8.
Number electron in oxide ions =
Number of electrons neon =
Hence, are isoelectronic.