An example of a single replacement reactions is the polishing of silverware by soaking with aluminum. Silver reacts with Sulfur, S, to become Ag2S. Aluminum replaces the silver, Ag, in this reaction. Which of these is the correct balanced chemical reaction for this? A. Ag + Al2S -> Ag + Al2S3
B. Al + Ag2S -> Ag + Al2S3
c. 2Al + 3Al2S -> 6Ag + Al2S3
D. 2Ag + 3Al2S -> 6Ag + Al2S3

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg