Bio fuel is a mixture of petrol and 20%——————

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

What material does not melt at any temperature