Determine which statements are true and which are false. PAH is an acronym for polycyclic aromatic hydrogen. PAHs interact with a zeolite by intercalating into the pores. A zeolite sequcsters PAHs by the formation of permanent covalent bonds.

1st statement false, 2nd statement true & 3rd statement false .

Explanation:

The task is to determined which sentence is true or false

PAH is Polycyclic aromatic hydrocarbons. Hydrogen is wrong.

Intercalation – is the reversible insertion of a molecule between two others.

Zeolites are minerals such as aluminosilicates of sodium, potassium, calcium or magnesium, that have a porous structure; they are used in water softeners and in ion exchange chromatography.

PAHs indeed interact with a zeolite by intercalating into the pores.

To sequester means to prevent an ion in solution from behaving normally by forming a coordination compound.

A zeolite doesn't sequesters PAHs by the formation of permanent covalent bonds but by forming a coordination compound.

in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

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%