How many grams of each species will be present at the end when 0.500 g of copper is added to 2.500 g of AgNO3?

Answer : The mass of excess ,  and Ag is, 1.16 g, 0.992 g and 0.849 g respectively.

Solution : Given,

Mass of Cu = 0.500 g

Mass of = 2.500 g

Molar mass of Cu = 63.5 g/mole

Molar mass of Ag = 108 g/mole

Molar mass of = 170 g/mole

Molar mass of = 126 g/mole

First we have to calculate the moles of Cu and .

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

From the balanced reaction we conclude that

As, 1 mole of react with 1 mole of

So, 0.00787 moles of react with 0.00787 moles of

From this we conclude that, is an excess reagent because the given moles are greater than the required moles and is a limiting reagent and it limits the formation of product.

Now we have to calculate the moles of excess

Moles of excess  = 0.0147 - 0.00787 = 0.00683 moles

Now we have to calculate the moles of  and Ag.

From the reaction, we conclude that

As, 1 mole of react to give 1 mole of

So, 0.00787 moles of react to give 0.00787 moles of

and,

As, 1 mole of react to give 1 mole of

So, 0.00787 moles of react to give 0.00787 moles of

Now we have to calculate the mass of excess ,  and Ag.

and,

and,

Thus, the mass of excess ,  and Ag is, 1.16 g, 0.992 g and 0.849 g respectively.

the movie was based there, and all the animals and characters are native.

~courtney

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.