Question

Identifying Independent and Dependent Variables Read each of the following short descriptions of an experiment and identify the independent anddependent variables in each. It is likely that you have observed a sealed soda can left out in a hot car expands. Based on the notion that gas escapes a liquid at high temperatures, a student chose to investigate the amount of dissolve oxygen in a local pond over a 12-month period. Sulfur dioxide is a commonly used preservative in wine as it prevents oxidation and bacterial growth. A wine producer would like to explore if pH affects the solubility of SO2 in the wine, and therefore decides to measure the SO2 in the wine solution over a range of pH values. The H2SO4 electrolyte concentration impacts the performance of lead-acid batteries, commonly used as car batteries. A researcher wishes to determine the optimal H2SO4 concentration for the best performance of the battery, as measured by the voltage output. Identify the independent and dependent variable for each scenario in the textfield below.

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1. Independent variable Dependent variable
2. Independent variable Dependent variable
3. Independent variable Dependent variable

Answer 1

a) Independent variable - Temperature

Dependent variable - amount of dissolve oxygen over a 12-month period

b) Independent variable - pH

Dependent variable - solubility of SO2 in the wine

c) Independent variable - H2SO4 concentration

Dependent variable - voltage output.

Step-by-step explanation:

An independent variable is the one whose value remain constant while a dependent variable is one whose values changes and is dependent on the independent variable

a) Independent variable - Temperature

Dependent variable - amount of dissolve oxygen over a 12-month period

b) Independent variable - pH

Dependent variable - solubility of SO2 in the wine

c) Independent variable - H2SO4 concentration

Dependent variable - voltage output.