Spontaneous reaction are always exothermic always take place at rapid rate

Achange in the number of neutrons in an atom will change an blank . when the number of protons changes in an atom, a new element will form.

When a septic tank backs up a goes in to clean it out

Main expenses you plan on making payments on a new car too. you want to spend 15% of your monthly net pay on the car payment, insurance, registration, and taxes combined. what is your monthly car allowance? $149.46 $298.91 $448.37 $597.83