Suppose You Start with 1 Kilogram of a Radioactive Substance

question 83

Multiple Choice

Suppose you start with 1 kilogram of a radioactive substance that has a half- life of 10 years. Which of the following statements will be true after 20 years pass?

• A)You'll have 0.75 kilogram of the radioactive substance remaining.
• B)You'll have 0.25 kilogram of the radioactive substance remaining.
• C)All the material will have completely decayed.
• D)You'll have 0.5 kilogram of the radioactive substance remaining.

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Definitions:

Same-sex Families

Households led by couples of the same gender, either with or without children.

Transracial Adoption

The adoption of a child that is of a different race or ethnic background from the adoptive parents, often involving unique cultural or identity considerations.

Multiethnic

Involving, pertaining to, or made up of several ethnic groups.

Multiracial

Pertaining to individuals or groups composed of or identifying with more than one racial heritage.