Determine the concentration of h 3 o + to the correct number of significant figures in a solution with each ph. describe how these calculations show the relationship between the number of digits to the right of the decimal place in ph and the number of significant figures in concentration. ph = 2.50 ph = 2.51 ph = 2.52

To calculate the concentration of H3O+

1- when PH = 2.5 :

The explanation:

we are going to use this formula:

PH = - ㏒[H3O+]

and we here have PH = 2.5 so, by substitution:

2.5 = -㏒ [H3O+]

∴ [H3O+] = 0.00316 ≈ 0.003

2- when PH = 2.51 :

The explanation:

we are going to use this formula:

PH = - ㏒[H3O+]

when here we have PH = 2.51 so, by substitution:

2.51 = - ㏒[H3O+]

∴[H3O+] = 0.00309 ≈ 0.003

3- when PH = 2.52 :

The explanation:

we are going to use this formula:

PH = - ㏒[H3O+]

when here we have PH =2.52 so, by substitution:

2.52 = -㏒[H3O+]

∴[H3O+] = 0.00301 ≈ 0.003

we can see that when the the number of digits to the right of the decimal place in ph increase, the number of significant figures in concentration decrease.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

water   molecules stay close to each other through cohesion, the collective action of hydrogen bonds between water molecules. cohesion plants draw water upwards from the root through the stem's transport tubes (xylem) to the leaf. this transport occurs even in large trees and against gravity. transpiration, evaporation of water from plant leaves, creates a tension on water molecules being pulled up from the stem and roots.

water also has high (the attraction of one substance to another) properties because of its polar nature. adhesion of water molecules to plant cell walls counteract gravity while water is transported from roots to leaves.

water exhibits a very high surface tension when compared to other liquids. surface tension is a property of a liquid that holds the surface together and allows it to resist an external force. by capillary action, the water forms concave menisci inside the pores. the high surface tension of water pulls the concavity outwards, generating enough force to lift water from the roots to the leaves of plants.

thus, cohesion, along with adhesion and surface tension creates a capillary action that keeps water molecules interacting and moving through the plants out to the leaf cells.

therefore, option d) is the correct answer.

explanation: