Which of the following is a limit of science?
the technology or tools available to test scientific claims
the number of times an experiment can be repeated
the total number of scientists in a field, like physics or chemistry
the use of critical thinking and evidence to study phenomena

The use of critical thinking and evidence to study phenomena

Explanation:

Science relies a whole lot on experimentation and observation. To make the best methodical and scientific judgement, critical and logical thinking is core to the field of science. But, not all phenomena can  be explained or analyzed this way. Some phenomena can not be easily tested, observed and explained. One example is the belief systems, science cannot really explain to any reasonable extent the assertion of most belief systems.

adding or remove a gaseous reactant or product changes the concentrations. if the concentration of reactant or product is increased, the system will shift away from the side in which concentration was increased (i.e. if the concentration of reactants is increased, the system will shift toward the products. if more products are added, the system will shift to form more reactants). conversely, if the concentration of reactant or product is decreased, the system will shift toward the side in which concentration was decreased (i.e. if reactants are removed, the system will shift to form more reactants. if the concentration of products is decreased, the equilibrium will shift toward the products).

explanation:

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