CHM2046L PRACTICE QUIZ QUESTIONS AND ANSWERS

CHM2046L PRACTICE QUIZ
QUESTIONS AND ANSWERS




When-should-you-clean-up-a-chemical-that-you-spill-in-the-lab-(such-as-at-the-balance-
station)?---ans-✔✔Immediately

What-does-the-safety-pictogram-labeled-F-depict?

(F-=-Skull-&-Crossbones)---ans-✔✔Toxic

The-concentration-of-dye-in-Solution-A-is-28-M.-A-serial-dilution-is-performed-to-make-
Solutions-B-and-C.

In-the-first-dilution,-8-mL-of-Solution-A-is-diluted-with-12-mL-water-to-make-Solution-B.

Then,-6-mL-of-Solution-B-is-then-diluted-with-1-mL-of-water-to-make-Solution-C.

What-is-the-concentration-of-dye-in-Solution-C?

Provide-your-response-to-three-significant-figures-in-units-of-molarity.---ans-✔✔9.6

If-a-solution-appears-orange,-approximately-what-wavelength-of-light-is-it-absorbing?

Express-your-answer-numerically-in-units-of-nanometers.---ans-✔✔460,

470-(with-margin:-30)

Consider-an-isotope-that-undergoes-beta-decay-and-emits-beta-particles.

Can-beta-particles-effectively-penetrate-paper?-

Can-beta-particles-effectively-penetrate-aluminum?---ans-✔✔yes,-no

A-student-collects-data-for-the-concentration-of-a-reaction,-A,-over-time-and-determines-
that-it-is-linear.-The-equation-of-the-line-that-fits-the-data-is:

y-=--0.026-x-+-0.422