The difference between Argon-38 and Argon - 45 is the number of neurons in their nuclei.
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What is Isotope?</h3>
Isotopes are two or more types of atoms of the same element that have the same atomic number but differs in mass numbers due to different numbers of neutrons in their nuclei.
Argon atom with a mass number of 38 (Ar-38) - number of neutrons = 20
Argon atom with a mass number of 45 (Ar-45) - number of neutrons = 27
Thus, the difference between Argon-38 and Argon - 45 is the number of neurons in their nuclei.
Learn more about isotopes here: brainly.com/question/364529
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From the given choices above, the volume that is well represented is the fourth choice, 2.50 mL. This is because there is enough number of significant figures after the decimal point to ensure that there is accuracy in the given values.
Dark is just absence of light like if the re container a and container b u nee to pour hcl from a to so a has hcl while b has absence of hcl
tell me if u need more examples.hope it helps
Answer:
mass of salt 6.72g
Explanation:
mass of the combine mass with salt- mass of the empty beaker
36.176g−29.456g=6.72g