Poisson's a) is a method to relate the longitudinal deformation of a material with its simultaneous lateral deformation b) ..is a discrete probability distribution that expresses the probability of a given number of events occurring in a fixed interval of time or space c) is a dimensionless number equal to the change in length of a specimen, divided by the original length d) .typically has low values for polymers, and high values for metals

The Poisson's ratio (ν) is a method to relate the longitudinal deformation of a material with its simultaneous lateral deformation.

Explanation:

The Poisson's ratio (ν) is a method to relate the longitudinal deformation of a material with its simultaneous lateral deformation.

It can be expressed as

It is a measure of the Poisson effect, in which a material tend to expand in directions perpendicular to the direction of compression.

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%