CHEMISTRY COMMUNITY

jane_ni_2d

In the 7th edition for topic 7D how much do we need to know about models of reactions?

jane_ni_2d

how can you tell which is the anode and which is the cathode?

jane_ni_2d

so its correct that the anode is always on the left of the concentration cell right?

jane_ni_2d

how evenly is the final going to be distributed among topics?

jane_ni_2d

do we need to know what happens if both the entropy and temperature changes in a reaction?

jane_ni_2d

In the Arrhenius equation, what is the A?

jane_ni_2d

How can you tell the difference between a first/second/and third order reaction?

jane_ni_2d

whats the difference between an galvanic and a voltaic cell?

jane_ni_2d

are there any common charges that we should know besides the fact that oxygen is 2-?

jane_ni_2d

When balancing basic reactions, how can you tell how many -OH should be added?

jane_ni_2d

It's helpful to just write all your units out and then see which ones cancel!

jane_ni_2d

The activation energy is the energy required for a reaction to happen!

jane_ni_2d

Do we know which sections test 3 will be on yet?

jane_ni_2d

will we be expected to know the vsepr shapes for molecules to determine whether they are linear or not?

jane_ni_2d

what is the difference between positional disorder and other types of disorder?

jane_ni_2d

is there a correlation between open/closed/isolated systems and exothermic/endothermic systems?

jane_ni_2d

Is this information about the environment and fossil fuels included on the midterm?

jane_ni_2d

You have to first click on the class your'e in and the topics to be able to post!

jane_ni_2d

Which sections specifically are we going to be tested on on the midterm?

jane_ni_2d

does le chatelier's principle apply to all chemical reactions or only those at equilibrium?

jane_ni_2d

What effect does Le Chatelier's principle have when the pressure is increased in a reaction that has an even amount of moles on either side?

jane_ni_2d

What is a standard reaction enthalpy?

jane_ni_2d

What's the difference between an extensive and intensive property?

jane_ni_2d

Is this official SI unit joules or kilojoules?

jane_ni_2d

Whats the difference between heat capacity and molar heat capacity?

jane_ni_2d

can kp also be used in place of kc?

jane_ni_2d

what's the difference between the ice tables for acid base reactions and for regular equilibrium reactions?

jane_ni_2d

will office hours this coming monday and other sessions be cancelled because of mlk day?

jane_ni_2d

What does ICE stand for?

jane_ni_2d

Is one of Kp or Kc more important?

jane_ni_2d

What is the difference between Kc and Kp?

jane_ni_2d

For something with the formula AXE3, would the bond angles be 180 because the molecular shape is linear?

jane_ni_2d

What is the most commonly used and accepted definition of acids and bases?

jane_ni_2d

What is a method for identifying the salts that are produced from the acid- base neutralization reactions?

jane_ni_2d

should we memorize the strong acids??

jane_ni_2d

For the final, should we probably memorize some of the common names of polyatomic ions for the naming?

jane_ni_2d

For the final, should we probably memorize some of the common names of polyatomic ions for the naming?

jane_ni_2d

How can you tell when bond angles are going to be "slightly less than" 109.5/120, etc.??

jane_ni_2d

On the test if they asked us to draw the Lewis Structure, would the Lewis Structure that we've been drawing be fine or should we draw a Lewis structure that shows the angles??

jane_ni_2d

For the molecule thionyl chloride (SOCl2), why is the shape trigonal pyramidal? Shouldn't the shape be T-shaped/trigonal bipyramidal?

jane_ni_2d

For the compound ClO2+, how is the arrangement trigonal planar while the shape is angular?

jane_ni_2d

Are double bonds or single bonds more stable?

jane_ni_2d

how can you find the shape of GeF4 molecule?

jane_ni_2d

How does the ball and stick model change and the angles between the bonds change?

jane_ni_2d

Which is more important when it comes to stability- making sure that the formal charge is zero on everything or making sure that the octet rule is satisfied?

jane_ni_2d

How should we know which ones are exceptions?

jane_ni_2d

When we draw Lewis structures of polarizable things, should we label within the Lewis structure which ends is more polar?

jane_ni_2d

How are polarity and resonance connected? Do they vary in any way with each other?

jane_ni_2d

Are resonance structures generally stronger/more stable than other structures?

jane_ni_2d

Which bonds are longer, ionic or covalent? Or is the comparison not relevant?

jane_ni_2d

For everyday objects, is it true that the uncertainty of any object is nonsignificant compared to how big the object is usually?

jane_ni_2d

Why does energy increase when an electron goes up an energy level?

jane_ni_2d

How do you write an expression for total coulombic potential energy and what does total coulombic potential energy mean?

jane_ni_2d

How many orbitals are present in the 4p subshell? How can you find this out?

jane_ni_2d

How do you predict the number of nodal planes expected for a 4f orbital?

jane_ni_2d

What is the difference between a radial node and an angular nodal surface?

jane_ni_2d

Why does the energy of the electron change when the hydrogen atom undergoes a transition from the 1s orbital to the 2p orbital because it says that "there are one 2s- and three 2p- orbitals in the shell and in hydrogen they all have the same energy"?

jane_ni_2d

Will we have to know the classifications of the series such as the differences between the Balmer and Lyman series for the test?

jane_ni_2d

How do you solve this problem: "In the ultraviolet spectrum of atomic hydrogen, a line is observed at 102.6 nm. Determine the values of n for the initial and final energy levels of the electron during the emission of energy that leads to this spectral line". I'm not really sure where to st...

jane_ni_2d

Why is it that when frequency decreases, the extent of change in the electrical field at a given point also decreases?

jane_ni_2d

The purpose of the photoelectric effect was to explore how light was transmitted. They believed that light was transmitted based on the intensity of the light that can be seen. However, it was discovered that light is actually transmitted based on the frequency and wavelength of the electron light w...

jane_ni_2d

There is no difference between there being two limiting reagants and just one. You still find the mole ratio and the reagant with the smallest mole ratio is the limiting reagant.

jane_ni_2d

It depends on the wavelength- if the wavelength is too small, it will not be measurable. Around 10 x ^-18 nm is when wavelengths become measurable. Smaller than that, the wavelengths are not measurable.

jane_ni_2d

The theoretical yield is always larger than the actual yield because the theoretical yield is the calculated yield. When we calculate the yield, we use perfect numbers and assume that the reaction will go perfectly as planned. However, in the real world, there are many different factors involved in ...

jane_ni_2d

I balance the equation based on whether the elements are in a compound or not! I balance the elements in compounds first, because the elements not in compounds or in compounds of just themselves (ex: O2) are easier to change around later.

jane_ni_2d

It is neither an educated guess nor an approximation- using the method of solving the empirical formula that we found in class, you should be able to find the exact empirical formula. While the numbers may not be exact, they should be relatively close (within a tenth). Since the numbers are within a...

jane_ni_2d

It is neither an educated guess nor an approximation- using the method of solving the empirical formula that we found in class, you should be able to find the exact empirical formula. While the numbers may not be exact, they should be relatively close (within a tenth). Since the numbers are within a...

Search found 67 matches