How many moles of PbS are equivalent to 458 g PbS?

Cassie buys a rope at the store. The label on the package says that the rope is 3.15 meters in length. She measures the rope as 1.85m. What is her percent error? Show your calculation.

Ryan saws some more wood from the top of the pyramid. The cross section moves closer to the base of the pyramid. What happens to the size and shape of the cross section when compared with the cross section in part A?

A titration was performed in a lab situation. H2SO4 was titrated with NaOH. The following data was collected: mL of NaOH used = 43.2 mL concentration NaOH = 0.15 M mL H2SO4 = 20.5 mL Notice that H2SO4 releases 2 H + per mole.

Explain different ways you could increase the reaction rate, and/or decrease the reaction rate

A glass of kook aid would be classified as

Which statement accurately describes the movement of Earth's plates due to convection currents?

Why does every human measurement have uncertainty associated with it? Why must we manage the uncertainty during calculations?

Which two properties are used to define matter? has mass and conducts heat has buoyancy and volume has mass and takes up space conducts energy and has characteristic properties

Define the following liquid mixtures as suspensions or solutions: a. Water + benzoic acid: Suspension b. Water + sodium chloride: Solution c. Isopropanol + sucrose: Suspension

Consider the reaction 2H2S (g) ⇌2H2 (g) + S2 (g), Kp=2.4*10-4 (at 1073 K) A reaction mixture contains 0.111 atm of H2, 0.051 atm of S2, and 0.566 atm of H2S. Determine how these conditions compare to equilibrium conditions.