(Starch) I hope this helps you please check again i'am not sure of my answer
The concentration of AB, in mol/dm³, after 6 minutes : 0.125
<h3>
Further explanation</h3>
For first-order reaction :
The half-life of the reaction is 2 minutes⇒t1/2=2 minutes
The concentration of AB, in mol dm, after 6 minutes ⇒ t=6 minutes
The rate constant (k) :
The concentration after 6 minutes :
The radiation source that provides the greatest radiation dose is one year of natural background radiation.
The most important variable to control in this experiment the type of bicycle tyre.
<h3>What is an experiment?</h3>
An experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
According to this question, Dan and Dawn wants to know if there is any difference between the mileage expected from bicycle tires from two different manufacturers.
Dan, then, conduct an experiment by putting one brand on his bike and Dawn will put the other brand on her bike.
In this experiment, the independent variable is the different mileage from different manufacturers. This means that to make this experiment a controlled one, all other variables must be kept constant.
Therefore, the most important variable to control in this experiment the type of bicycle tyre because Dan and Dawn must ensure that they use the same type of bicycle tyre.
Learn more about experiments at: brainly.com/question/11256472
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At convergent boundaries, tectonic plates Collide with each other. The events that occur at these boundaries are linked to the types of plates (oceanic or Connentaux that are interacting. oceanic crust gets bent and pulled under, or Subducted, beneath the lighter and thicker continental crust.