1. Silver nitrate will react with aluminum metal, yielding aluminum nitrate and silver metal. If you start with 0.223 moles of aluminum, you will create __ grams of silver.

__ AgNO3 + __ Al ⟶__ Ag + __ Al(NO3)3

2. Mercury combines with oxygen to yield mercury (II) oxide. If you want to produce 3.12 moles of mercury (II) oxide, you will need to start with grams of mercury.

__ Hg + __O2 ⟶__ HgO

3. Nitrogen and oxygen combine to produce dinitrogen pentoxide. If you want to produce 12.99 moles of dinitrogen pentoxide, you need ___ grams of oxygen available.

__ N2 + __ O2 ⟶__ N2O5

4. Benzene is an organic solvent that releases a lot of energy when it is burned. Burning 0.103 moles of benzene will release ___ grams of carbon dioxide.

__ C6H6 + __ O2 ⟶ __ CO2 + __ H2O

screening

explanation:

for points guys

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

i think it's letter a.