What happens when an electron moves from a high energy level to a lower one? it absorbs light it emits light it disappears it gets bigger

Calculate the concentration (in molarity) of NaOH solution, if 25.0mL of the solution are needed to neutralize 17.4 mL of a 0.132M HCL solution.

Classify each item by matching as organic (O) or inorganic (I). table salt (NaCl) TNT (C7H5N3O9) glucose (C6H12O6) 2, 4-D (C3H6O3Cl2) limestone (CaCO₃) water (H₂O)

Concept Review 14.11. Can a reaction that is not reversible achieve chemical equilibrium?

Many reactions are exothermic and undergo an increase in entropy. These types of reactions are thermodynamically favorable.

When mercury ii oxide is heated it decomposes into mercury and oxygen how many molecules of oxygen gas are produced if 12.5g of mercury (ii) oxide are heated

Why are water storage tanks usually built on towers or hilltops?

What is convection cell

One example of a decomposition reaction is the electrolysis of water. the chemical reaction can be expressed by the equation 2 h2o →2 h2 o2. the reactant (s) of this chemical reaction is/are?

When the positive ion of one compound replaces the positive ion of another compound?

A 2.00 L container of gas has a pressure of 1.00 atm at 300 K. The temperature of the gas is halved to 150K, and the measured pressure of the same 2.00 Liter sample is 0.420 atm.