Which is the best description of a scientific theory?
a. a statement about how two different variables are related
b. a collection of laws that are explained the same way
c. an explanation of many observations and tested hypotheses
d. an accepted fact that has always been observed to be true

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

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

Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid