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chem final
exam 2
| Term | Definition |
|---|---|
| N2+3H--2NH3+heat. what makes it shift to the right? | decrease temp, remove some NH3, adding some N2. |
| Which of the following does not exist as a diatomic molecule? | carbon |
| what is the classification for this reaction? Zn+2HCl- Zn+ H2 | single replacement |
| what is the molecular geometry of CH2O? | trigonal planar |
| identify the functinal group in the compound CH3CH2COOH? | carboxylic acid |
| when a reaction is at equilibrium: | the reaction rate f the forward reaction is equal to the rate of the reverse |
| a serving of fish contains 50 g of protein (4) and 4 g of fat(9). how many kcals are in the serving | 240 |
| which of the following is nonpolar? | CCl4 |
| in a chemical reaction, the rate of the reaction can be increased by: | increasing the concentration of reactant molecules |
| what coefficient is placed in front of O2 to complete the balancing of the following equation? C5H8+ ? O2-- 5CO2+4H2O? | 7 |
| compounds that are cis-trans isomers: | cis- same side. trans-diagonal. |
| which of the following exhibits primarily dipole-dipole intermolecular forces? | CH3OCH3 |
| In a catalyzed reaction, the function of the catalyst is to: | increase the energy given off in a reaction |
| which molecule contains a chiral carbon | jhlkjh |
| a bond where the electrons are shared unequally is called: | polar covalent bond |
| which of the following molecules cannot exhibit hydrogen binding? | CH4 |
| compounds that have the same molecular formula but diff arrangements of atoms are called: | isomers |
| carbon atoms always have how many covalent binds? | four |
| an enantiomer is : | a stereoisomer that is a mirror image of another molecule |
| which of the following would be most soluble in water: | CH3CH2OH |
| Lewis structure for NH3. whats the molecular geo, is it polar or nonpolar | pyramidal, polar |
| Collision theory of molecular reactions | three O collide, orientation, activation energy |
| WHY DOES TEMP HAVE AN EFFECT ON RATE OF REACTIONS | MORE HEAT, MORE MOVING MOLECULES, INCREASE CHANCES OF COLLisSION AT THE RIGHT ORIENTATION WITH ENOUGH eA. |