Which set of values represents standard pressure and standard temperature? (1) 1 ATM and 101.3K (2) 1 kPa and 273K (3) 101.3 kPa and 0 C. (4) 101.3 atm and 273 C

Why is the expectation value of the energy associated with the 1-D "particle-in-a-box" the same as the eigen value of the Hamiltonian associated with the 1-D "particle-in-a-box" wave function?

If you had 24 moles of hydrogen gas how many moles of ammonia (NH3) would be produced?

A solution is made by mixing 24. G of acetyl bromide (CH3COBr) and 18. G of heptane (C7H16). Calculate the mole fraction of acetyl bromide in this solution

Which of the following is not an indication of a chemical reaction? Two substances burst into flames on contact. A substance freezes. Bubbles form when two substances are combined. A solid forms when two substances are combined.

Directions: The solubility curve for several common salts is shown in the graph. Use the graph to answer any questions that follow. A KNO3 solution hits saturation when 75 g of salt have dissolved. At which temperature is the solution? A. 15°C B.

A geologist discovered fossils of marine animals in a layer of sedimentary rock in the desert. Based on this discovery, what conclusion can the geologist draw?

How do metals form chemical bonds with other metals?

Maple syrup has a density of 1.325 g/ml, and 100.00 g of maple syrup contains 67 mg of calcium in the form of ca2 + ions. what is the molarity of calcium in maple syrup?

When an object is lifted 6 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 18 meters off the ground, its potential energy is A. six times as much. B. the same. C. three times as much. D.

How many moles of oxygen gas are there in 6.02 x 10 the the 24th power?