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What is meant by anisotropic? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ? A reaction produced 52.1 g of kcl how much o2 was produced in grams? Multiply matrices A and B of any sizes legally (no size compatibility requirment). What kind of matrix multiplication am I? Is it true that the oxidation number of an ion is equal to its protons subtracting its electrons?