Will Give Brailest pls help its a test

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

At stp, which substance is the best conductor of electricity? a. nitrogen b. neon c. sulfur d. silver