How Many Grams of KCl(s)are Produced from the Thermal Decomposition

question 103

Multiple Choice

How many grams of KCl(s) are produced from the thermal decomposition of KClO₃(s) which produces 25.0 mL of O₂(g) at 25°C and 1.00 atm pressure according to the chemical equation shown below?
2 KClO₃(s) → 2 KCl(s) + 3 O₂(g)

• A)0)0508 g
• B)0)0762 g
• C)0)0835 g
• D)0)152 g

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Definitions:

Relationship Between Variables

The relationship between variables refers to how changes in one variable are associated with changes in another through correlation or causation.

Significance Level

The significance level, often denoted by alpha (α), is the threshold chosen by the researcher to determine the statistical significance of an outcome; it's the probability of rejecting the null hypothesis when it is true.

Highly Significant

A term used in statistical analysis to denote results that vastly exceed the threshold for statistical significance, often suggesting a strong effect or association.

p < .001

p < .001 indicates that the probability of the observed data, or something more extreme, assuming the null hypothesis is true, is less than 0.1%, which is considered highly statistically significant.