Test norms consist of data that make it possible to determine the relative standing of an individual who has taken a test. By itself, a subject's raw score (e.g., the number of answers that agree with the scoring key) has little meaning. ... Norms provide a basis for comparing the individual with a group.
The mass of the isotope Chromium-50 would be 2.685 grams in 61.8 grams of elemental Chromium.
Explanation:
Natural chromium () is composed of four stable isotopes: (4.345 % abundance), (83.789 % abundance), (9.501 % abundance) and (2.365 % abundance). We can obtained the total mass of the isotope Chromium-50 (), measured in grams, by multiplying the mass of elemental chromium (), measured in grams by percentage ratio (), dimensionless. That is:
If we know that and , then the mass of isotope Chromium-50 would be:
The mass of the isotope Chromium-50 would be 2.685 grams in 61.8 grams of elemental Chromium.