<p>Firepolishing was not the correct answer. It was pouring water into acid.</p>
<p>5 wrong, 1 missed is what, 780?</p>
<p>darn you’re right</p>
<p>rm2124 is correct, the proper procedure is to pour acid into water to avoid harmful backsplash</p>
<p>what did you get for the density one. was it 1.00 or 1.001?</p>
<p>1.00, significant figures, right?</p>
<p>Test was so much harder than practice tests.</p>
<p>thats what i put too b/c of sig figs but im not sure</p>
<p>What was the alloy question again? I put zinc but idk if I misread brass as bronze…</p>
<p>My D said the test is about the same level as Barron’s this time. So it may be on the difficult side and the curve may be more generous.</p>
<p>the significant figures was 1.0 because 1.00 has three and the last digit doesn’t count as it uncertain</p>
<p>No questions required the use of significant figures, correct.</p>
<p>Also, what was the one with wo3 + 3h2 -> w + 3h2o?</p>
<p>I think you’re going a bit too far with uncertainty there, I’m fairly confident it was 3 sig figs since 11.0 is three sig figs and if you divide the answer is the same amt of sig figs as the number with the smallest sig figs in the quotient so I’m pretty sure the answer is 1.00</p>
<p>I said w was oxidizing agent since it was reduced</p>
<p>@chemmy i think i got h2 as the reducing agent</p>
<p>u do the lesser one but in your answer u only include 2 becuase 11.0 has three sig figs and the last one is uncertain, i did a practice test with that exact kind of question and i chose the one with 3 sig figs and i got it wrong and the right one was 2 sig figs</p>
<p>@lelouchFTW i was going to put that but WO3 is being reduced, not W, right?</p>
<p>I thought only W gained electrons which is why I put W only</p>
<p>i don’t know. anyway zinc IS a component of the alloy, brass. yaay</p>