Draw an energy diagram for the variation of the potential energy of two hydrogen atoms as a function of the distance that separates their two nuclei. Comment on the energy changes as the two nuclei approach
each other. The bond length of H2 is 74 pm; this distance must be indicated on the energy diagram.
Knowing that the H-H covalent bond energy is 436 kJ/mol, indicate on the graph the minimum energy (in
Joules) for the interaction between the two H atoms. Draw a dotted line for 0 joule energy on the
diagram. Show on the diagram what the H-H bond energy represents.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Which of the following are correct values for the ideal gas laws constant r

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.