Isted What is the concentration of Htions at a pH = 11?
mol/L
H =
o in
What is the concentration of OH ions at a pH = 11?
mol/L
What is the ratio of H+ ions to OH ions at a pH = 11?
:1, OR 1:

answer and explanation;

composition refers to both the types of minerals within a rock and the overall chemical makeup of the rock while texture refers to the size and arrangement of the minerals or grains that make up a rock. both composition and texture can be used to classify rocks, such as igneous rocks. texture describes how the rock became solid or crystallized from liquid, melted rock. composition of a rock describes the minerals that make up a particular rock.

A. they hold atoms  together with a molecule.its a force that exist between molecules. hope this .

    5.5 n======    assuming that      we have      m = 0.145 kg    a = 38 m/s²therefore    5.51 n, but two significant figures.final answer: 5.5 n