How to do single replacement reactions

Which statement is best described as a atom

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

If you fill your car tire to a pressure of 32 psi (pounds per square inch) on a hot summer day when the temperature is 35°c (95°f), what is the pressure (in psi) on a cold winter day when the temperature is -15°c (5°f)? assume no gas leaks out between measurements and the volume of the tire does not change.