if you were asked to design a new until to count something, what would you consider when choosing how many items should be included in your new counting unit​

Can someone me out on this question for my national 5 chemistry homework

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer.

•what conclusions can you make about the relationship between the volume of a gas and its temperature? • what conclusions can you make about the relationship between the volume of a gas and its pressure? • what possible variables have you not accounted for? as you did the procedures, is it possible that the atmospheric pressure may have changed? if it did change over the course of your experiment, then how would your results have been affected?