Solutions of hydrogen in palladium may be formed by exposing pd metal to h2 gas. the concentration of hydrogen in the palladium depends on the pressure of h2 gas applied, but in a more complex fashion than can be described by henry's law. under certain conditions, 0.94 g of hydrogen gas is dissolved in 215 g of palladium metal. (a) determine the molarity of this solution (solution density

Answer is: molarity of the solution is 3.902 M.

m(H₂) = 0.94 g; mass of hydrogen.

n(H₂) = m(H₂) ÷ M(H₂).

n(H₂) = 0.94 g ÷ 2.016 g/mol.

n(H₂) = 0.466 mol; amount of substance.

d(Pd) = 1.8 g/cm³; density of palladium.

V(Pd) = m(Pd) ÷ d(Pd).

V(Pd) = 215 g ÷ 1.8 g/cm³.

V(Pd) = 119.44 cm³ ÷ 1000 cm³/L = 0.11944; volume of palladium.

c = n(H₂) ÷ V(Pd).

c = 0.466 mol ÷ 0.11944 L.

c = 3.902 mol/L.

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance