Assume that silver and gold form ideal, random mixtures. Calculate the mass of pure Ag needed to cause an entropy increase of 20 J/K when mixed with 100g of pure Au

Explanation:

Hello!

In this case, since the definition of entropy in a random mixture is:

For this silver-gold mixture we write:

By knowing the moles of gold:

It is possible to write the aforementioned formula in terms of the variable representing the moles of silver:

Which can be solved via Newton-Raphson or a solver software, in this case, I will provide you the

So the mass is:

Best regards!

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

3 1/4 %

explanation: