As refrigerant passes through the expansion valve, it cools down or heats up?

When a mixture of PH3, P2, and H2 comes to equilibrium at 873 K according to the reaction 2PH3 (g) ←-→P2 (g) + 3H2 (g) Kp = 398 at 873 K, where Pp2 = 0.414 atm and PH2 = 0.827 atm.

What are the standard ways to make a solution of known concentration? (select all that apply.) ?

Henry's law states that the solubility of a gas is directly proportional to its partial pressure, LaTeX: S_g=k/cdot P_gS g =

Silver chloride breaks down to form silver and chlorine in the presence of light. what type of reaction is this? A combination reaction, B double-replacement reaction, C single-replacement reaction, D decomposition reaction?

How many moles of O2 are counsumed if 20 moles of SO2 are Produce

What does ice cream melt on a hot day which type of thermal energy transfer does this melting represents

For which purpose do biochemists insert human genes into bacteria? to find a cure for the common cold to produce insulin for diabetics to kill resistant strains of bacteria to evolve certain species of bacteria

Cracks in rocks chemical or mechanical

A large boulder falls from an underwater ledge and crashes on the floor of the ocean. A pod of dolphins is 800 meters away. Determine how long it takes for the sound of the crash to reach the dolphins. A) 0.5 sec B) 0.3 sec C) 2.3 sec D) 1.9 sec

Given 4.80g of ammonium carbonate, find: Number of moles of the compound Number of moles of ammonium ions Number of moles of carbonate ions Number of moles of hydrogen atoms Number of hydrogen atoms