Why is NH3 classified as a polar molecule? * NH3 is a gas at STP.
N -H bonds are nonpolar.
NH3 molecules have asymmetrical charge distributions.
Nitrogen and hydrogen are both nonmetals.

Write a paragraph at least 10 sentences explaining how rocks are used today in society

The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.