You suspect one of the products of a single replacement is hydrogen gas. how might you experimentally confirm your prediction? choose the best option.
a. watch for bubbles to form in solution which indicates a gas was produced. b. waft to detect an odor from the test tube.
c. place a burning splint near the end of the test tube and listen for a 'pop' sound. d. hydrogen gas is never a product in a chemical reaction.

Ascientist measures the speed of sound in a monatomic gas to be 449 m/s at 20∘c. what is the molar mass of this gas?

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

[ou.03jthe pictures below show the wavelengths and intensities of electromagnetic radiations emitted by three stars, star 1, star 2, and star 3. intensity intensity- intensity- 1000 3500 6000 8500 11000 wavelength (a) star 1 1000 3500 6000 8500 11000 1000 3500 6000 8500 11000 wavelength (a) wavelength (a) star 2 star 3 which of these statements is correct about the color of the three stars? star 2 is white in color o star 2 is yellow in color star 1 and star 3 are yellow in color star 1 and star 3 are white in color