Vaseline has a molecular formula of C15H15N. What is the mass of 0.61 moles of Vaseline? The atomic mass for C is 12.0g, H is 1.0G and N is 14.0 g

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

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]