A solution of H2 and I2 reacts and reaches equilibrium at 721k. the equilrium concentrations are [H2]=0.460M, [I2]=0.390M, [HI]=3.00M. Calculate Keq at 721k

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?