How Many ${SO}_{3}^{2-}$ Ions Are Contained in 99 ${SO}_{3}^{2-}$ Ions
B)4

question 80

Multiple Choice

How many ${SO}_{3}^{2-}$ ions are contained in 99.6 mg of Na₂SO₃? The molar mass of Na₂SO₃ is 126.05 g mol^-1.

• A)1.52 × 10²⁷ \({SO}_{3}^{2-} \)ions
• B)4.76 × 10²⁰ \({SO}_{3}^{2-} \) ions
• C)2.10 × 10²¹ \({SO}_{3}^{2-} \) ions
• D)1.05 × 10²¹ \({SO}_{3}^{2-} \)ions
• E)9.52 × 10²⁰ \({SO}_{3}^{2-} \) ions

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Definitions:

Sum of Squares

A measure used in statistical analyses to quantify the variation or deviation of data points from their mean; the total of each data point's squared difference from the mean.

Regression SSR

Regression SSR (Sum of Squares for Regression) quantifies the variation explained by the linear model in regression analysis.

Random Error

Variability in data that is caused by unpredictable and unavoidable fluctuations in the measurement process.

Linearly Correlated

A statistical relationship between two variables in which changes in one variable are associated with proportional changes in another variable along a straight line.