There is snow.
Sticking.
To the ground.
I'm so happy! We NEVER get snow here! And we may even have the day off tomorrow! *knock on wood*
-----
For me, for chem class:
Title: Mass to Mass Stoichiometry Lab
Purpose: To determine the amount of sodium chloride that can be produced from a known amount of sodium carbonate reacted with hydrochloric acid.
Materials:
-Sodium carbonate
-4M hydrochloric acid
-evaporating dish
-dropper pipette
-hot plate
-electronic balance
-spatula
Procedures:
1. Please wear goggles and apron for this lab!!!
2. Measure the mass of a clean, dry evaporating dish and watch glass, and record.
3. Add 1.45 grams of sodium carbonate to the evaporating dish. Measure the mass, with the watch glass, and record.
4. Slowly add 7.6 mL of hydrochloric acid to the sodium carbonate. When bubbling stops, add more hydrochloric acid by drops until you reach a point where no bubbling occurs.
5. Place dish on the hot plate using the watch glass as a cover.
6. Heat the dish gently on the hot plate until only dry solids remain. Make sure no water droplets remain on the underside of the watch glass. Do not heat too rapidly. If the product boils, it may spatter out of the dish.
7. Turn off the hot plate. Remove the dish and allow to cool. Determine the mass of the cooled evaporating dish/watch glass/product and record.
8. Clean lab station.
Pre-Lab Data:
Mass of dish, watch glass, and sodium carbonate: 91.384g
Mass of empty dish and watch glass: 89.979g
Mass of sodium carbonate: 1.405g
Post-Lab Data:
Mass of cooled dish, watch glass, and product: 91.703g
Actual yield of product (sodium chloride):
Conclusion:
1. 2HCl + Na
Joy
Devious Comments
--
You could move. ~Abigail Van Buren, "Dear Abby," in response to a reader who complained that a gay couple was moving in across the street and wanted to know what he could do to improve the quality of the neighborhood
--
Kouga: Neyome are you done yet?!
Neyome: NO im not. calm down..*plays with kouga's hair*
Kouga:*growls*
Neyome: Their allllll done!
Kouga:...you just pulled it out of a ponytail..
Neyome: I know! I like this muchhhh better! kk?
Kouga:...whatever.
--
For every light, there is darkness. Without evil, there cannot be good. That is the way it has been, and that is the way it will always be. For the brighter that you shine the light, the deeper the darkness becomes.
*high-fivez*
--
God created man first cuz there's always a roughdraft before that masterpiece.
Love your enemies - it will drive them NUTS!
And then God said, "John, come forth, and recieve eternal life..."
But John came fifth, and got... A toaster.
<3 4 Jesus
Yeah for you!!!
--
I'm in a world full of fantasies that are waiting to come out of my mind.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'm a girl who just wants to do what she likes best. ^.^V
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
I'm a tomboy and the boys in my school FEAR ME!!!
--
"What is love but another emotion if you have nobody to share it with?"
--
"What is love but another emotion if you have nobody to share it with?"
--
“Thank you friends. So you see… I can’t be wrong about everything. I can’t be, it’s impossible.” -Morrissey
--
At the beginning of the Space Program, Nasa discovered a ball-point pen would not work in anti-gravity, so the spent one billion dollars developing the famous Space Pen. The USSR used a pencil.....
Previous Page12 Next Page