Bromine boils at 59ºC is this a physical or chemical change?

How many meters are equivalent to 50 feet? Use the conversion factor: 1 meter = 3.28084 feet A. 2.55 meters B. 15.24 meters C. 16.85 meters D. 164.042 meters

What is the sum of 9260 and 3240

in 100ml of water, 20 kcl are dissolved at 50C. Is the resulting solution saturated, supersaturated or unsaturated

NH3+H2SO4 = (NH4) 2SO4 balance equation

The best fit curve line to an absorbance vs. concentration plot for standard solutions of a dye has a slope of 0.1815 mL/mg and intercept of 0.0477. A sample solution prepared of the same dye has an absorbance of 0.

Reactions cannot occur without a certain minimum amount of energy. what is this minimum amount of energy called?

What are the products of the alpha decay of Iodine-131?

Which lewis electron-dot diagram represents a nitrogen atom in the ground state

What would a 1:1 liquid binary mixture of Cyclohexane and Toluene look like? How would the molecules associate with one another?

A sample of argon gas is at a pressure of 1.725x10^4 kPa and a temperature of 24°C in a rigid 20 L tank. How many moles of argon does this tank contain? (show your work)