Calculate the mass in 0.523 moles of Ag?

56.41 g

Explanation:

Moles = Mass ÷

Given that,

moles = 0.523 mol

= 107.8682 u

mass = ?

Mass = Moles ×

Mass = 0.523 × 107.8682

mass =  56.41 g

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.