What element produces violet light of approximately 412 nm?

a. hydrogen

b. mercury

c. sodium

d. neon

A certain alcoholic beverage contains only ethanol (C₂H₆O) and water. When a sample of this beverage undergoes combustion, the ethanol burns but the water simply evaporates and is collected along with the water produced by combustion.

True or False According to Avogadro's principle, at equal temperatures and pressures, equal volumes of gases have equal masses.

The water molecule H2O is polar because it contains two polar single bonds and A. its molecule has a linear shape. B. molecules that contain polar bonds are always polar. C. its molecule has a bent shape. D.

Match the following definitions to their correct terms. 1. any chemical compound that contains carbon solute 2. a liquid that acts to dissolve or suspend substances inorganic 3. a chemical compound that doesn't contain carbon organic 4.

How does the reaction of hydrogen and oxygen to produce energy in a fuel cell differ from their interaction during the direct combustion of hydrogen and oxygen?

Is potassium iodide an electrolyte or nonelectrolyte?

Consider mixing 25.00 mL of 0.0200 M of each of the following of solutions. In which of the following will a precipitate form: Na2SO4 mixed with Ba (NO3) 2 NH4Cl mixed with Mg (NO3) 2 KF mixed with Ba (NO3) 2 MgCl2 mixed with Na2CO3

How many liters of chlorine gas at 650 mmhg and 25c can be produced by the reaction of 2.00 l of 2.50 m hcl solution with excess mno2?

What is the theoretical yield of H2S

How many atoms are there H, SO