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100
True/False: Is the ocean actually becoming more acidic?
False: the ocean is only becoming less neutral.
100
What is neutral pH?
7.0
100
What is the currency for Massfield?
Grams
100
A Precipitate is in the ____________ phase of matter
solid
100
what is matter?
matter is anything that takes up space and has mass
200
What is the only disturbance that has an affect on Keq?
Temperature
200
During Chemical Equilibrium; what is the same?
Both the forward and reverse reactions occur at the same rate
200
What are the three "towns" on the stoichiometry roadmap?
Massfield, Moletown, Atomville
200
In an Ionic Compound, the Cation’s charge plus the Anion’s charge must add up to equal ________.
o
200
what happens if you put a less dense and a more dense liquid in a container?
the less dense liquid will float on the more dense liquid
300
When you increase the concentration of a reactant, what direction does the reaction shift?
The reaction shifts to the right; toward the products.
300
How do concentrated and dilute solutions look at the molecular level?
Concentrated: Lots of solute in a small amount of solvent
Dilute: Small amount of solute in a large amount of solvent
300
How do you calculate Molar Mass of a substance?
Multiply the amount of atoms in a substance by each of their atomic masses, then add those together.
300
True or False? Iodine Chloride (ICl) is a Dipole because it has 2 poles, one end with a Partial Positive Charge and the other end with a Partial Negative Charge.
true
300
what is a physical/chemical change
physical changes is a change in size or shape and no new substance is formed
a chemical change is a change in the physical and chemical properties and a new substance is formed
400
for the rxn below explain how lower[HCO3^-1] impacts shell (CaCO3) formation
Ca^+2(aq)+2HCO3^-1(aq)=CaCO3(s)+CO2(g)+H2O(L)
is [HCO2^-1] goes down the shell (CaCO3) formation also goes down
400
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+1+2+3+4+5+6+7+8+9+10+11+12/0
0
400
Calculate #mol Al need to react with 9.9 mol MgCl2:
3MgCl2(aq) +2Al(s) -> 3Mg(s) +2AlCl3(aq)
6.6 mol Al
400
Why is Ammonia (NH3) considered Polar?
Because the Bond Polarities combine to give one end of the molecule a Partial Positive Charge and the other end a Partial Negative Charge.
400
what happens at each point on the graph of temp of water
a is solid
b is solid/liquid
c is liquid
d is liquid/gas
e is gas
500
Draw/Complete chart for reaction:
H2(g) + I2(g) ⇌ 2HI(g) ∆=52 kJ
Increase [HI]
Left Shift; Up Arrow; Up Arrow; N/A; N/A
500
HCN (aq) + OH^-1 (aq) ⇋ H2O (l) + CN^-1 (aq)
Determine Acids and Bases and Pairs for this reaction
HCN (aq): BLA ; OH^-1 (aq): BLB ; H2O (l): CA ; CN^-1 (aq): CB
HCN / CN: ACBP
OH / H2O: BCAP
500
Determine Limiting Reactant and Excess Reactant then calculate #g NaCl produced in 59.6g FeCl2 reacts with 36.8g Na3Po4.
41.9g NaCl
500
Why is Carbon Tetrachloride (CCl4) considered Nonpolar?
Because the Bond Polarities extend equally and symmetrically in different directions, canceling each other's effect.
500
how many moles of gas are in a 30.0 L scuba canister if the temperature of the canister is 26.85 degree sign C and the pressure is 208 atm?
253 mol