Water is whats left so then that evaporates
These baking soda and vinegar balloons were so much fun! Mix everything together and watch as the reaction creates carbon dioxide and inflates the balloons! As far as science experiments go, this is a pretty simple one. I love that we had all of the materials needed for it at home already, and that it was quick and easy to put together! And on top of that, it was pretty darn cool to watch the balloon inflate all by itself!
My kids LOVE balloons. I swear, every time I give them a balloon, they find a way to entertain themselves with it for hours (or until it hits the popcorn ceiling and it pops – EEK!). Whenever I wrap presents (I keep the balloons with my ribbons and bows), they always sneak one out, and instantly put it in their mouths and start blowing. And when that fails – they are only 5 and 3 years old, so they definitely don’t have the lung power yet to blow them up by themselves – they hand me a wet balloon and say “Mommy, can you blow this up?”. Who doesn’t love blowing up a soggy balloon!? So we were all pretty excited that we could blow up balloons another way, without using our mouths!
2.167*10^22 atoms of hydrogen
Element atomic number position
Ba 56 group 2, period 6
Ca 12 group 2, period 3
S 16 group 16, period 3
Si `14 group 14, period 3
Now, you need to know the properties of the different type of elements and the tendencies on the periodic table.
The metallic elements are, those placed on the left side of the periodic table, are the ones that release an electron more easily, so they will requiere less energy to give it up when forming chemical bonds.
The higher the metallic character the less the energy need to give up an electron.
The metallic character grows as the group number decreases (goes to the left) period increases (goes downward), so among the elements considered, Barium will require the least amount of energy to give un an electron when forming chemical bonds.
What you need to do is like this:
ΔSrxn∘ = Products - Reactants
<span>ΔSrxn∘ = [NO2 (mols*S∘)] - [NO (mols*S∘) + O2 (mols*S∘)] </span>
<span>ΔSrxn∘ = [(2 mol * 240.0 J/mol*K)] - [(1 mol *205.2 J/mol*K) + (2 mol *210.8 J/mol*K)] </span>
<span>ΔSrxn∘ = [480 J/K] - [626.8 J/K] </span>
<span>ΔSrxn∘ = -146.8 J/K
</span>I hope this is good for you
