The Covariance

question 88

Multiple Choice

The covariance

• A)must be between -1 and +1.
• B)must be positive.
• C)can be positive or negative.
• D)must be less than +1.

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Definitions:

Theory of Atoms

A scientific theory that matter is composed of discrete units called atoms, which are the basic building blocks of chemical substances.

Law of Definite Proportions

A chemical law stating that a compound always contains exactly the same proportion of elements by mass.

Dalton's Atomic Theory

A foundational concept in chemistry that asserts elements are composed of tiny, indivisible particles called atoms, and that chemical reactions involve the rearrangement of these atoms.

Rutherford

Refers to Ernest Rutherford, the scientist who proposed the model of the atom with a central nucleus surrounded by electrons.