Nitrogen dioxide is a gas that can be generated by emissions from vehicles and factories. it can also be generated by natural sources, such as forest fires,
lightning, and microbial activity in soil. The equation for producing nitrogen
dioxide is shown below. Which of these provides evidence that a chemical
reaction occurs?

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)