What is the pH of a substance with a Hydrogen concetration of 1.23 x 10°3

a. 10.4

b. 2.91

c. 1.20

d. 8.74

The current global population is 7.7 billion people, and the WHO estimates the minimum water need per person per day is 15 L. An estimate of accessible freshwater available as groundwater, lakes, and rivers is 6.34 x 100 km².

One electron is removed from both an Na atom and a K atom, producing two ions. Using principles of atomic structure, explain why the Na ion is much smaller than the K ion. Discuss both ions in your answer.

In any chemical compound the elements are always combined in the same proportion by__. a) charge b) mass c) volume d) density

In each of the following blanks, only enter a numerical value. 1) In a sublevel for which l = 0, there is/are (blank) orbital (s), and the maximum number of electrons that can be accommodated is (blank).

Trey and Randall are conducting an experiment to test the effects of watering plants with deionized water compared to tap water.

Which system of measurement does the U. S. use?

Which substance would be found in higher concentration if the membrane were damaged? View Available Hint (s) Which substance would be found in higher concentration if the membrane were damaged? protein chloride creatinine glucose

A provider order states kanamycin 700 mg im, the kanamycin label states to add 5ml of sterile water to 1 gram kanamycin, how many milliliters should be given

What is the bond angle of a regional planar molecule

Why does acetone have more surface tension than methanol?