What does an increase of 1 pH number represent? A. An increase in hydrogen ion concentration by a factor of 10 O B. A decrease in hydrogen ion concentration by a factor of 10 C. An increase of 1 mole per liter of hydrogen ions D. A decrease of 1 mole per liter of hydrogen ions​

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

Substance a is a nonpolar liquid and has only dispersion forces among its constituent particles. substance b is also a nonpolar liquid and has about the same magnitude of dispersion forces among its constituent particles. when substance a and b are combined, they spontaneously mix.