Based on your Lewis structures for the postlab assignment, which molecules below have a three dimensional structure? (Select all that apply.)

(A) CO2

(B) H2S

(C) SO3

(D) PCl3

(E) CH2Cl2

(F) NO2

In an exothermic reaction, the enthalpy change is negative. Which of the following is also true for an exothermic reaction? The products have a lower potential energy than the reactants. The reactants have a lower potential energy than the products.

4 Amelia is classifying plants in science lab. Her teacher describes a plant that has leaves, stems, roots, and that produces fruit. How should Amelia classify the plant? A. moss B. non-flowering plant C. fern D.

Which of the following units can be used to measure the mass of a grain of salt? A. milliliters B. milliseconds C. millimeters D. milligrams

What is the density of N2 gas (molar mass: 28 g/mol), at 400 K and 2 atm?

In a far-off galaxy, an astronomer observes a moon orbiting a planet. The moon stays in orbit because of the planet's gravity.

One year ago, you sold a put option on 100,000 euros with an expiration date of 1 year. you received a premium on the put option of $0.04 per unit. the exercise price was $1.22. assume that 1 year ago the spot rate of the euro was $1.

Calculate the product of 0.0002115m and 0.0000405m. Express the answer in scientific notation

How do the different spheres of Earth interact? Volcanic eruptions are natural phenomena in the. They sometimes erupt, spilling out lava and dust. The lava solidifies, forming new landmasses.

Differentiate between mass, volume, and density. Explain why only changing the shape of an object would have no effect on its density.

Describe the properties of noble gases. Based on their electronic arrangement, explain whether they can exist alone in nature.