Draw the product of the hydrogenation of 2-butyne. draw all hydrogen atoms.

In a potential energy diagram, the difference between the potential energy of the products and the potential energy of the reactants is equal to the a. heat of reaction b. entropy of the reaction c. activation energy of the forward reaction d.

A 0.82 kg piece of wood floats in water but is found to sink in alcohol (sg=0.79), in which it has an apparent mass of 0.059 kg.

What kind of bond is not formed by differences in electronegativity? A) ionic B) polar disalent C) polar covalent D) nonpolar covalent

S this equation balanced and in the lowest form? 4NH3 → 2N2 + 6H2

a rope breaks when the tension reaches 305N what is the largest largest mass it can swing at 14.2m/s in a circle of radius 0.425m? (unit=kg)

What happens to the total mass of a substance undergoing a physical change

32 g of sulfur will react with 48 g of oxygen to produce 80 g of sulfur trioxide. if 20 g of sulfur and 100 g of oxygen are placed into a sealed container and allowed to react, what is the mass of sulfur trioxide in the container after the reaction

Water exhibits high levels of cohesion due to the polarity of the molecule (positively and negatively charged sides). given this information, which type of bond is responsible for water's cohesion and which atoms interact to form this bond?

scientist have found many marine fossils on the mountain far from any ocean or sea what is the best explanation for these fossils

The change in energy needed to change the state of a substance is