Answer all parts of the following questions on particle stoichiometry.

lithium metal reacts with copper (ii) nitrate.

1. translate, predict the products, and balance the equation above.

2. how many particles of lithium are needed to produce 125 g of copper?

3. how many grams of lithium nitrate are produced from 4.83e24 particles of copper (ii) nitrate?

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error