Solid NH4HS is introduced into an evacuated flask at 24 ∘C. The following reaction takes place: NH4HS (s) ⇌NH3 (g) + H2S (g) At equilibrium the total pressure (for NH3 and H2S taken together) is 0.614 atm.

Which compound conducts electricity only in the molten state? A. sodium bromide B. calcium hydroxide C. barium sulfate D. magnesium sulfate

PH tells how acidic or basic a solution is.

Eva pumps up her bicycle tire until it has a gauge pressure of 413 kilopascals. If the surrounding air is at standard pressure, what is the absolute pressure in the bicycle tire?

Students working in lab use 52.3g of CaCl2 to make a solution. When the solution is brought to a final volume of 800. mL, what is the concentration? A. 0.139 M B. 0.153 M C. 0.588 M D. 0.632 M

What is the study of his matter and energy interact? A. Chemistry B. Physics C. Biology D. Planetary science

Most metals are solid at room temperature, malleable, ductile, good conductors of heat and electricity, and react in acids to produce hydrogen gas. which of the properties mentioned is a chemical property? a. are malleable b. reacts with acids c.

Silver tarnishes when it comes into contact with hydrogen sulfide in the air. physical property or chemical property

When a volcanic irruption adds new rock to existing land and forms new islands is it considered destructive?

How many neutrons are in Cesium-130 (Cs) ? 55 75 130 185

An atom in a pure metal that's face-centered cubic has ___ neighbor atoms.