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zaboda42
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How many moles of ions are in 0.0200g AgNO3. Please help, i can't seem to set up the equation!
To calculate the moles of ions in a given sample of AgNO3, you first need to determine the molar mass of AgNO3, which is 169.87 g/mol. Then, divide the given mass (0.0200g) by the molar mass to get the moles of AgNO3. Since AgNO3 dissociates into one Ag+ ion and one NO3- ion, the moles of ions will be the same as the moles of AgNO3, in this case 0.0200 moles.
Knowing the moles of ions in a substance is important for various reasons. It allows us to accurately measure and predict the chemical reactions that take place, as the number of moles of ions present determines the amount of products that will be formed. Additionally, it helps in determining the concentration of the substance, which is crucial in many scientific experiments and applications.
Yes, the moles of ions in a substance can change. This can happen through chemical reactions, where ions can combine or dissociate to form new substances. Additionally, physical changes such as evaporation or dissolution can also change the number of ions present in a substance.
Avogadro's number (6.022 x 10^23) is the number of particles (atoms, molecules, or ions) in one mole of a substance. Therefore, knowing the moles of ions in a substance allows us to determine the number of particles present, by multiplying the moles by Avogadro's number.
No, it is not possible to have a negative number of moles of ions. Moles are a unit of measurement for the amount of substance, and cannot have a negative value. However, in certain situations, the number of moles of ions present may decrease due to a reaction or physical change, resulting in a net change of moles. But the value itself cannot be negative.