The ratio of the mass of o to the mass of n in n2o3 is 12: 7. another binary compound of nitrogen has a ratio of o to n of 16: 7.
what is its formula?
express your answer as a chemical formula.

NO2

Explanation:

Molar mass of Nitrogen (N) is 14g/ mole . Molar mass of O is 16g/ mol. So the ratio of atoms of each is  :

Moles of O = mass of O / Molar mass O = 12 / 16 = 0.75 = 3/4 mole of O

Moles of N = mass of N / Molar mass N = 7 / 14 = 0.5 = 1/2 mole of N

So to scale these fractions to a whole number, multiply both by 4.

4 x 3/4 = 3 moles of O; 4 x 1/2 = 2 moles of N. This confirms your first N2O3.

Do the same for the ratio 16:7.

Moles O: 16 / 16 = 1 mole of O

Moles of N: 7 / 14 = 1/2 mole of N

This means for each 1/2 mole of N we have 1 mole of O; or for each mole of N we have 2 moles of O : the ratio is 2.

Multiplying both by 2: N = 1 mole; O = 2 moles. So the molecule is NO2.

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:

56 moles of   lieter in chemistry