Hydrogen H 2 gas and oxygen O 2 gas react to form water H 2 O vapor. Suppose you have 7.0 mol of H 2 and 13.0 mol of O 2 in a reactor. Suppose as much as possible of the H 2 reacts. How much will be left? Round your answer to the nearest 0.1 mol .

Unpolarized light of intensity i_0=750w/m^2 is incident upon two polarizers. after passing through both polarizers the intensity is i_2=280w/m^2. (a) what is the intensity of the light after it passes through the first polarizer in w/m^2? (b) write an equation for the angle between the polarizers in terms of the initial (i_0) and final (i_2) intensities. (c) find the angle between the polarizers in degrees.

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart?