<p>He is faster than Xe I believe</p>
<p>was it t t but not ce?</p>
<p>nonmeatals are denser right?</p>
<p>The answer to the base question was choice E: OH-</p>
<p>I think they form acidic oxides.</p>
<p>how many T,T,CE did we all get?</p>
<p>I chose He too in the Xe question.
Then I chose the acidic oxide part with the nonmetals. I did out denser as my first answer though</p>
<p>yay got the OH- right</p>
<p>Consolidated list so far:
SiO2 used for glass.
Water into acid = bad lab practice.
1.00 (3 sig figs from 11.0 mL).
Zinc is used for galvanized steel and brass alloy.
H2 is reducing agent.
Water in tube TTCE.
Hess’s law = -35kJ.
SF3 is unstable.
Calcium carbonate in HCl produces CO2 gas.
Soda fizzes because decreasing pressure allows CO2 to escape.
No visible change = Na2SO4 and NaOH.
Electrons release energy in packets called quanta.
NH4NO3 used in fertilizer.
CCl4 tetrahedral.
HBr = linear.
45 days = half life.
0.5 mol O2 and 0.5 mol N2 ratio of 1 for partial pressures.
Molar mass does not depend on boiling point.
Metalloid that is semiconductor is germanium.
Triple bond is CO.
CO2 has two double bonds.
NH3 only one pair of unshared electrons.
Copper wire question = cannot observe that two electrons were transferred or lost or whatever.
OH- is strongest base.
NaCl has more metallic bond character than AlCl3, but not because Na is a metal and Al is a nonmetal
CCl2F2 implicated for ozone destruction.
Acid rain from SO3
Phenolphthalein pink and clear solution.
1M HCl released most heat.
Exothermic when K+ and Cl- crystallizes out of solution.</p>
<p>was it true for the Na-- bond has more metallic character than the Al-- bond?</p>
<p>that is incorrect. it was CO3 2-</p>
<p>its too late but the test was tough than practice test</p>
<p>i think except was used in the laboratory question?was it</p>
<p>how there is triple bond in CO?</p>
<p>@rm2124, what was incorrect?</p>
<p>@burning00, look up carbon monoxide, there’s a triple bond. and there was except. adding water to acid is NOT a good lab practice. all the others were okay practices.</p>
<p>Yeah nonmetal oxides are acidic anhydrides. Also, one question asked what substance forms acid rain when it reacts with atmospheric moisture, was the answer SO3</p>
<p>C and o have 10 valence electrons so there has to be a triple bond then one lone pair on the carbon and one lone pair on the oxygen To complete octet rule</p>
<p>ya SO3 is for acidic rain question</p>
<p>What was the ozone harming compound?</p>
<p>i think i got 6 or 5 T, T, CE questions :(</p>
<p>And how about the nacl and alcl3 one?</p>