Search found 22 matches

by Aleena_Sorf_2A
Fri Mar 17, 2017 9:29 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Q: What do you call a tooth in a glass of water?
A: A one molar solution
by Aleena_Sorf_2A
Sun Mar 12, 2017 7:15 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Q: What did the scientist say when he found 2 isotopes of helium?
A: HeHe
by Aleena_Sorf_2A
Sun Mar 05, 2017 9:34 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Why are chemists great for solving problems?
- They have all the solutions.
by Aleena_Sorf_2A
Sun Feb 26, 2017 6:27 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Q: What do chemists call a benzene ring with iron atoms replacing the carbon atoms?
A: A ferrous wheel:
Fe - Fe
/ \
Fe Fe
\ /
Fe - Fe
by Aleena_Sorf_2A
Mon Feb 20, 2017 3:40 pm
Forum: General Rate Laws
Topic: Ch 15 Exercise 3a
Replies: 1
Views: 264

Re: Ch 15 Exercise 3a

To find the rate of a reactant, we use the following formula: Rate= - Delta [R] / Delta T Since the concentration of reactants is decreasing over time, we use a negative in the equation to cancel out the negative value of concentration. In the course reader on page 59, it also says that we want to w...
by Aleena_Sorf_2A
Sun Feb 19, 2017 10:14 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Helium walks into a bar.
The bar tender says, “We don’t serve noble gasses in here.”
Helium doesn’t react.
by Aleena_Sorf_2A
Sun Feb 12, 2017 9:10 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Q: Did you hear about the man who got cooled to absolute zero?
A: He's 0K now
by Aleena_Sorf_2A
Sun Feb 05, 2017 9:46 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

A piece of ice fell in love with a Bunsen burner...

"Bunsen! My flame! I melt whenever I see you!" , said the ice. The bunsen burner replied: “It’s just a phase you’re going through.”
by Aleena_Sorf_2A
Sun Jan 29, 2017 10:28 am
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Some chemistry puns!

1) What do you do with a sick chemist?
-If you can't helium, and can't curium, then you might as well barium.

2) I told a chemistry joke, but there was no reaction!

3) All the good periodic table jokes argon?
I dont zinc so!
by Aleena_Sorf_2A
Sun Jan 22, 2017 4:12 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: 8.75b HOMEWORK PROBLEM
Replies: 2
Views: 256

8.75b HOMEWORK PROBLEM

Why are the C=C bonds only breaking and not the C-H bonds for problem 8.75b?
by Aleena_Sorf_2A
Fri Jan 20, 2017 7:08 pm
Forum: Thermodynamic Systems (Open, Closed, Isolated)
Topic: Work on a System [ENDORSED]
Replies: 3
Views: 485

Re: Work on a System [ENDORSED]

Work done on the system means something outside of the system (the surroundings) did something to increase the internal energy of the system. Work done by the system means the system's internal energy decreased as it did work on something outside the system (its surroundings).
by Aleena_Sorf_2A
Sun Jan 15, 2017 2:50 pm
Forum: Reaction Enthalpies (e.g., Using Hess’s Law, Bond Enthalpies, Standard Enthalpies of Formation)
Topic: Chapter 8 #65
Replies: 5
Views: 515

Re: Chapter 8 #65

The value -169,2 kJ is not the answer because the final equation does to contain NO as a a reactant. In order to cancel the unwanted NO, we must do the following: -169.2kJ= the enthalpy of formation of N2O5 (which is what we are trying to solve for) - 2(+90.25 kJ) = +11.3kJ The second part of this e...
by Aleena_Sorf_2A
Fri Dec 02, 2016 8:00 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Question: What kind of fish is made out of 2 sodium atoms?

Answer: 2NA!!
by Aleena_Sorf_2A
Fri Nov 25, 2016 4:41 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Question: What is the show cesium and iodine love watching together?

Answer: CSI
by Aleena_Sorf_2A
Mon Nov 14, 2016 11:57 am
Forum: Shape, Structure, Coordination Number, Ligands
Topic: Homework Problem 17.29
Replies: 1
Views: 243

Homework Problem 17.29

When it asks us to name the complex ion in part c, why is cobalt written as cobaltate? For example, both part b and part d have the compound written as cobalt.
by Aleena_Sorf_2A
Fri Nov 11, 2016 6:32 pm
Forum: Hybridization
Topic: 25.d
Replies: 2
Views: 286

Re: 25.d

The shape of SCl4 is trigonal bipyramid. Therefore, by drawing the VSEPR shape, we see that the dipole moments do not cancel out.
by Aleena_Sorf_2A
Wed Nov 02, 2016 11:26 pm
Forum: Student Social/Study Group
Topic: Post All Chemistry Jokes Here
Replies: 7348
Views: 889383

Re: Post All Chemistry Jokes Here

Do Not Trust Atoms!!
They Make Up Everything...
by Aleena_Sorf_2A
Fri Oct 28, 2016 6:32 pm
Forum: Lewis Structures
Topic: Quiz 2 Prep Question #7
Replies: 2
Views: 368

Re: Quiz 2 Prep Question #7

The Lewis structure of XeO2F2 is not allowed with Ne as a central atom because the central atom with an expanded octet must have an atomic number that is greater than 10.
by Aleena_Sorf_2A
Mon Oct 17, 2016 5:26 pm
Forum: Trends in The Periodic Table
Topic: Aufbau Principle [ENDORSED]
Replies: 2
Views: 396

Re: Aufbau Principle [ENDORSED]

According to the Aufbau Principle, electrons fill up orbitals with the lowest energy first before filling up the higher energy orbitals. For example, an electron configuration for Cl would be 1s^2, 2s^2, 2p^6, 3s^2 ,3p^5, because a 3p orbital has greater energy than a 2p orbital. Hund's Rule states ...
by Aleena_Sorf_2A
Wed Oct 12, 2016 5:42 pm
Forum: Empirical & Molecular Formulas
Topic: L.39 Question: Empirical Formula of Oxide
Replies: 3
Views: 602

Re: L.39 Question: Empirical Formula of Oxide

L.39 Given: mass of Sn= 1.50 g mass of crucible= 26.45 g mass of crucible and oxide= 28.35 g mass of oxide= 28.35g-26.45g= 1.90 g mass of oxygen= 1.90-1.50 g= .4 g 1.50 g Sn x (1 mol Sn/118.71 g Sn)= 1.264 x 10^-2 mol Sn .4 g x (1mol O/16.00 g O)= .025 mol O You would then divide the moles by the sm...
by Aleena_Sorf_2A
Fri Oct 07, 2016 6:28 pm
Forum: Photoelectric Effect
Topic: Stern and Gerlach Experiment [ENDORSED]
Replies: 2
Views: 381

Stern and Gerlach Experiment [ENDORSED]

How does the Stern and Gerlach Experiment demonstrate electron spins?
by Aleena_Sorf_2A
Thu Sep 29, 2016 11:35 pm
Forum: Properties of Light
Topic: % Yield
Replies: 5
Views: 823

Re: % Yield

In this problem, we are given the masses of the reactants and the actual yield. We are asked to calculate the percent yield, which can be solved by this formula: Percent Yield= (Actual Yield/Theoretical Yield) x 100 However, we first need to find the theoretical yield, which can be done by solving f...

Go to advanced search