otypes. Dominant alleles mask the expression of recessive alleles in heterozygous genotypes, resulting in a phenotype that reflects the dominant trait. For example, when crossing two heterozygous pea plants (Aa x Aa), the genotypic ratio a
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ome experienced significant deflection due to close encounters with the nucleus. This experiment led to the nuclear model, which remains fundamental in modern atomic theory. Question 2: Using the ideal gas law, calculate the volume occupied by 2 mol of oxygen gas (O₂) at
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the calculation of their interior and exterior angles. For example, knowing that the sum of interior angles of a polygon with n sides is (n-2) × 180° is essential. The answers to test questions often involve applying this formula
water are produced when 4 grams of hydrogen gas react with excess oxygen? (Reaction: \(2H_2 + O_2 \rightarrow 2H_2O\)) **Answer:** Convert 4 g \(H_2\) to moles: \[ \text{Molar mass of } H_2 = 2 \text{ g/mol} \Rightarrow \frac{4 \text{ g}}{2 \text{ g/mol}} = 2 \text{ moles } H_2 \] Us
