The glow emitted by a substance exposed to external radiation is called

A. luminescence.

B. phosphorescence.

C. fluorescence.

D. bioluminescence.

The second-order decomposition of NO2 has a rate constant of 0.255 M-1s-1. How much NO2 decomposes in 4.00 s if the initial concentration of NO2 (1.00 L volume) is 1.33 M?

The molar heat of vaporization for liquid water is 40.6 kJ/mole. How much energy is required to change 3.4 g of liquid water to steam if the water is already at 100oC?

What is the overall charge of the NaCl molecule?

Which of the following is an example of a safe laboratory procedure? a. tying back long hair and loose clothing b. eating or drinking from laboratory glassware c. touching hot objects with your bare hands d.

tandard reduction potentials are 1.455 V for the PbO2 (s) / Pb (s) couple, 1.82 V for Co3 (aq) / Co2 (aq), 3.06 V for F2 (g) / HF (aq), 1.07 V for Br2 (l) / Br - (aq), and 1.77 V for H2O2 (aq) / H2O (l).

What atom has 14 protons and 14 electrons

What is a diagram showing the forces acting on a coasting bike rider traveling at 25 km/h on a flat roadway

Do all electromagnetic waves travel at the same speed?

Which of the following has the greatest first ionization engergy li, be, b or c

If we know that 10.0 cm3 of ice has a mass of 9.19 g what is the density of ice