C3H8 + O2 (please give me brainliest$
Answer:
Neutralization reactions occur when two reactants, an acid and a base, combine to form the products salt and water.
Conduction - by touch
Convection - hot air rises, cold air sinks
Insulation - to insulate or capture heat
Radiation - by waves
Direct contact means touch, therefore the answer would be conduction.
HBr is the formula for hydrobromic acid