Term
which is the smallest
Ca Ga K Br or As? |
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Definition
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Term
which of the follwing gasses would diffuse the fastest though an extrememly fine membrane?
Ar Ne He Xe or all of them? |
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Definition
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Term
| from Sr I Xe Rb or Cd which would removing an electron from be most difficult? |
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Definition
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Term
| what are the causes of soil losing its fertility? |
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Definition
| leaching extracts nutrients and plants extract nutrients |
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Term
| what is the main product of the haber process? |
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Definition
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Term
| what is the difference between synthetic and natural fertilizers? |
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Definition
| there is no difference chemically, just that synthetics are mixed in different proportions |
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Term
what is a complete fertilizer?
NH4NO3 with K3PO4
KNO3 with NH4NO3
NH3
all of them?
only the first and second? |
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Definition
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Term
| why does a farmed field lose its fertility while a wild pasture does not? |
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Definition
| harvesting removes the minerals and organic matter stored in the plants from the ecosystem |
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Term
what would you expect to be the least attracted to a Na+ ion?
F- H3C-CH3 HO- Cl2CH2 H-F |
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Definition
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Term
| the seperation of charges within a polar molecule is call a(n) what? |
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Definition
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Term
| what is happening at the mo9lecular level when a polar molecule like water interacts with a typical sodium ion? |
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Definition
| the water molecule aligns such that the oxygen interacts with the sodium |
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Term
| what describes an aqueous solution? |
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Definition
| a mixture of some compound dissolved in water |
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Term
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Definition
| a special type of dipole-dipole attraction involving hydrogen bound to any other atom |
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Term
in which of the following molecules will water induce a temporary dipole?
O2 CO2 N2 all? or none? |
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Definition
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Term
which of the following would have the highest boiling point?
F2 I2 Br2 Cl2 not enough information |
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Definition
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Term
which of the following would have the smallest number of induced dipole-induced dipole interations?
C10H22 C8H18 C12H26 C6H14 not enough information |
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Definition
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Term
| what material phases cannot form a solution? |
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Definition
| all material phases (gas, liquid, solid) can make solutions |
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Term
| in a solution of 77% nitrogen and 23% oxygen which is the solvent? |
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Definition
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Term
| what describes the term concentration? |
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Definition
| it is the amount of solute in a given amount of solution |
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Term
which has more atoms?
a mole of lead
a mole of helium
a mle of gold
all of the above have the same numbr of atoms
none of the above |
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Definition
| all of the above have the same number of atoms |
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Term
| which of the following best decribes a two-molar sucrose solution? |
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Definition
| one liter of solution that contains 2moles of sucrose |
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Term
| How are interatomic forces and soluability related? |
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Definition
| solubility is a measure of how weak the intermolecular forces in the solute are. |
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Term
which iof the following might have the best solubility in water?
Cl2
CH3OH
O2
CH2CH3
none of the above |
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Definition
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Term
how is the solubility of a solid affected by temperature?
As temp goes up, the solubility goes up
as temp goes down, solubility goes down
as temp goes up, solubility goes down
as temp goes down, solubility goes up
both a and b |
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Definition
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Term
| how is the solubility of a gas affected by temperature? |
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Definition
| as temperature goes down, the solubilitiy goes up |
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