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100
What happens when the pressure goes up?
They go to the least amount of energy
100
What's missing out of solute+_____= solution?
solvent
100
What is the description of Dilute and Concentrated?
Weak and Strong
100
In hydrogen bond with O-H, why does O have S- and H a S+?
Hydrogen is bonded to an atom with high electronegativity (O) making it S- & pull in hydrogen
100
How many sig figs are in the measure: 5,098
3
200
What happens when the temperature decreases?
It towards energy
200
Calculate [H+1] in an aqueous solution at 25*C w/ 1.0x 10-9 M OH-1.
25*C = Kw
200
Explain what happens once the LR is used up?
No more ER are left over. Chemical Reaction stops.
200
Write a chemical equation based on the description.
Solid Copper (III) Oxide decomposes to produce liquid Copper (III) and gaseous Oxygen
CuO2(s)--> Cu (&) + O2(g0
200
State 3 reasons why rockets use liquid hydrogen as fuel.
hydrogen is light weight burns at high temp and thrust more per unit of volume
300
How acidic is the ocean?
It is not acidic it just decreasing just a little bit but its still basic.
300
Explain what causes acid precipitation?
Human activities and natural events cause the realest of certain gases that make water in the atmosphere become more acidic causing acid precipitation
300
Calculate the molarity of a solution consisting of 2.5s Lif dissolved in 5.63L of water
(2.5gLif/1) (1 mol Lif/ 25.94g Lif) = .09637 mol Lif
(.09637 mol Lif/5.83L solution) = .071 M Lif
300
Describe Hydrogen Bonding.
Given to IMF in which a hydrogen atom that is bonded to highly electronegativity
300
How many sig figs are in this measurement?
0.0000000007545000765005600
16
400
Why are the shells being hard to create?
The increase in CO2 makes it harder to form CaCO3
400
What are the property's for acid and bases?
the acids release hydrogen ions and the bases release hydroxide ions
400
Calculate Molar Mass=F2
Element=? #Atoms=? Average Atomic Mass= ? Molar Mass= ?
Element= F
#Atom= 2
AAM= 19.00
MM= 38.00 g/mol
400
What are the 2 reactants in this equation? and What are the 2 products in this equation?
C6H12O6(s) + 9O2(g) --> 6CO2(g) + 6H2O(l)
The 2 reactants are C6H12O6(s) and 9O2.
The 2 products are 6CO2 and 6H2O
400
A tire is filled with 95.3 L of air at a Pressure of 807 torr. Calculate the pressure of the tire if the volume is changed to 72.58 L
1,060 torr
500
calculate pOH of a 5.4 x 10-6 M OH-1 aqueous solution at 25*C. State whether aqueous solution in Acidic,Basic, or Neutral.
pOH=-log (5.4 x 10-6) = 5.27
500
Where do BLB,BLA,CA, and CB labeled in this equation?
HCO3-1 (aq) + OH-1 (aq) H2O (l) + CO3-2 (aq)
HCO3-1 (aq) + OH-1 (aq) H2O (l) + CO3-2 (aq) BLA BLB CA CB | l_____________l | |________________________________|
500
Calculate #mol CO2 formed when 7.36 mol O2 are used
BCE: C3H8(g) + 5O2(g) -> 3CO2(g) + 4H2O(g)
Know: #mol CO2=? 7.36 mol O2 (3SF) MR: 1 mol C3H8: 5 mol O2: 3 mol CO2: 4 mol H2O
(7.36 mol O2/1) ( 3mol CO2/ 5 mol O2) = 22.08/5
=4.416
= 4.42 mol CO2
500
What would make it balance?
_Y(CLO)2(s)+_Ge(lO3)4(aq)>_Ge(ClO)4(s)+_Y(lO3)2(aq)
Y(CLO)2(s)+Ge(lO3)4(aq)>Ge(ClO)4(s)+Y(lO3)2(aq)
500
Convert 5.804 psi to kPa. Round to the correct #sig figs
40.03 kPa