question

Conformational Isomers

answer

Same molecule rotated around a bond differently

question

Newman Projections

answer

Used to view along a bond. Can be used to look at bond rotations

question

Anti-staggered

answer

The most stable bond formation. The bulkiest at 109 degrees apart

question

Eclipsed

answer

Least favorable, bulkiest in line

question

Gauche

answer

The two bulkiest are in 60 degrees apart. In the middle of favorability

question

Cyclic conformers

answer

Conformational isomers that depend on ring strain For hexane, the most stable is the chair. Least favorable is a boat, then twisted boat

question

Flagpole strain

answer

Can cause inversion of a cyclic conformer When the large ones are axial instead of equatorial Causes inversion to fix it

question

When a ring flip occurs in 3-cholorocyclohexanol, its pre and post flip form represent what kind of isomer

answer

Conformational isomers

question

Chirality

answer

Nonsuperimposable mirror images Has to have 4 unique substituents Called a stereo center Cannot become its mirror image without breaking a bond

question

Enantiomers

answer

Configurational isomers that are non superimposable and mirror images

question

Imagine haloalchol (R)-1-chloroethanol. What would be its enantiomer?

answer

(S)-1-chloroethanol

question

Diastereomers

answer

Configurational isomers with more than one stereo center that are non superimposable and not mirror images

question

How many stereo centers exist for 4-amino-3-bromo-pentan-2-ol

answer

8

question

Cis/trans

answer

Configurational isomers that differ in configuration across a double bond or ring Cis is same, trans is opposite

question

Between methyl-but-1-enol's cis or trans isomers, which one is more stable?

answer

trans

question

Meso compounds

answer

Have one or more chiral centers and has an internal plane of symmetry

question

Z/E Configuration

answer

Absolute configuration used across a double bond Can be used when more than one substituent is present Z and E name are at the beginning

question

R/S Configurations

answer

Absolute configuration using stereo centers Clockwise=R Counterclockwise=S Needs to be flipped when the larger one is dashed At the beginning of IUPAC name

question

When determining the stereochemistry of 2-bromo-2-hydroethanol, which substituent is most important

answer

Bromine

question

Linear motion

answer

velocity and acceleration are along the same line of motion When an object is not acceleration or has a constant velocity, it is still undergoing constant acceleration of 0

question

Gravity

answer

10 m/s^2 Acceleration

question

Linear motion equations

answer

VAT VAX TAX x

question

VAT

answer

v=vi+at

question

VAX

answer

v^2=vi^2+2ax

question

TAX

answer

x=vit+(at^2/2)

question

x equation physics

answer

x=v(average v)xt

question

Free fall

answer

Linear motion

question

Projectile motion

answer

vertical and horizontal planes each must be analyzed separately

question

When a ball is thrown thru the air, what mist be the vertical component of its velocity when it reaches peak height?

answer

v=0

question

Inclined Planes

answer

1D, but the motion is not going in the same direction as the largest force(g) FN always perpendicular to the box, Fg down Movement will be going parallel to the incline

question

How to solve for movement down the ramp

answer

mgsintheta

question

How to find FN from an incline

answer

mgcostheta

question

Circular motion

answer

Can be resolved into radial and tangential components Velocity is forward, acceleration is into the center Centripetal force

question

Centripetal force

answer

Fc=mv^2/r

question

Centripetal acceleration

answer

ac=v^2/r

question

Under what conditions would an object in free fall no longer experience constant acceleration? When air resistance is non-negligible When its mass changes When it slows down When it speeds up

answer

When air resistance is non-negligible. there is no force pulling back on it. mass does not change, and an object is at constant acceleration when falling, and it would take an outside force for the object to slow down

question

A ball is thrown from a window 6.8m above the ground. If the ball is thrown upwards at an angle of 30 degrees, with a velocity of 8m/s. What is the max height above the ground that it reaches?

answer

7.6m

question

A 6kg box accelerating down a 45 degree incline experiences 11N of force from kinetic friction. If the box is initially at rest at the top of a 3m long incline, what is its velocity at the bottom?

answer

5.5m/s

question

Which of the following is NOT true of a 200kg object moving uniformly along a circular path with a 100m radius and experiencing 40m/s^2 of centripetal acceleration? The acceleration vector is not in line with the path of motion The magnitude of centripetal force experienced by the object is 8000N The object's instantaneous velocity is constant at all points along its path The objects instantaneous velocity is always approximately 4000m/2

answer

The objects instantaneous velocity is always approximately 4000m/s

question

Translational equilibrium

answer

Occurs when the vector sum of all forces is equal to zero No net force When a ball is kicked, then there is a net force toward that direction that outweighs the force of resistance or friction An object in translational equilibrium will have constant velocity, never sitting still

question

Rotational Equilibriun

answer

Caused by torque. This causes an object to rotate around a fixed pivot point or fulcrum

question

Torque

answer

Causes an object to move rotationally T=rFsintheta The larger the radius, force, and value for sin, the greater the torque

question

Two runners race each other. They both are the same height, move their legs at the same rate, generate the same amount of forward force, do not tire, and have the same apparel. Which of the following would best describe why one beat the other? One generates a greater upward force They have different body shapes One has stronger legs The runners have different diets

answer

They have different body shapes. One has less resistance

question

A designer wants to make a door that is easier to push on from the inside than open from the outside. Which of the following would not help with this? Having teeth that drag only in one direction Angling the available surface that people can push on outside of the door Moving the available surface on which people can push on above the door Moving the available surface people can push on to face the door hinges

answer

Making the available space higher. Nothing about the equation for torque says anything about height

question

In which direction will the wrench rotate is Force A is 6N applied counterclockwise and 0.15m from the bolt, while Force B is 8N clockwise and 0.12m from the bolt. Both are at a 90 degree angle

answer

.06 clockwise

question

Linear

answer

No lone pairs, 180 degrees

question

Trigonal planar

answer

120 degrees apart 3 bonds

question

Bent

answer

One lone pair of electrons with 2 bonds around it 120 degrees, or 109 for 4 connections

question

Tetrahedral

answer

109 degrees, 4 connections

question

Trigonal pyramidal

answer

109 degrees, one pair of electrons with three connections

question

Bernoulli's equation

answer

Pi + 1/2dv^2 + dgh = Pf + 1/2dv^2f + dghf

question

1/2dv^2 simplification

answer

(1/2mv^2/volume)

question

dgh simplification

answer

ugh/volume

question

Pressure equation

answer

Force/area N/m^2

question

What type of heat transfer is the primary way the sun's heat reaches the Earth

answer

Radiation

question

What is the correct IUPAC name for the following compound? CH3ChCHCOOCHCl2

answer

Dichloromethyl-2-butenoate

question

Which of the following is true of liquids, but NOT of gases? They will conform to fit the shape of their container They are essentially incompressible Larger constituent molecules will move at lower velocities, given equal temperatures They exert pressure on objects contained within them

answer

They are essentially incompressible

question

Hydrostatic Pressure equation

answer

P= Po+dgh

question

alkyne and alkene

answer

alkyne is 3 bonds alkene is 2

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