How hot can a supernova be in Celsius?

What is number 40 in the periodic table? Metastasis occurs because? How do you make a tidal power model? What recording tool would you use to make a schedule and why is it appropriate? Do you set an antenna by true north or magnetic north? What can cause uncontrollable bleeding if Vitamin E supplements are taken along with it? What causes metals like aluminium to become brittle when in contact with liquid metals like mercury or gallium? How long doest take to boil water on a blue flame? How much does silk cost per gram? Why put a lid on the container used to study mass of ice and water? What is the equation for lead plus water? What areas do organizational leaders policies influence the command climate adept? What is a thin rocky outer layer? How big is 67 mm? How many hours to fly Hong Kong to Vancouver? How do you unstick gause on a burn finger? What city coordinates are 48 degrees north and 13 degrees east? How to calculate cubic meters in a circle? What does the hibernate mode option do? What producers live in rivers and streams?