Can someone do this fun experiment for me!? Materials:
-Hot Water
-Cold Water
-Foam Cups
-Thermometer
-Measuring Cup
kk, then:
-Gather materials.
-Measure 50 ml of hot water and 50 ml of cold water into separate foam cups.
-Use a thermometer to measure the temperature of hot water and the cold water.
-Pour the hot and cold water into a third foam cup.
-Allow some time for the thermometer to reach a final temperature, then measure the temperature of the water.

kk, after your done please record your temperatures, and that's all! enjoy your 43 points!!

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.

pie chart because it is in percents ( % )

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.