Exam (elaborations)
CHMM EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
- Course
- Institution
CHMM EXAM 2024/2025 WITH 100% ACCURATE SOLUTIONS
[Show more]
Content preview
CHMM EXAM 2024/2025 WITH 100% ACCURATESOLUTIONS
When polonium (atomic mass 210 & atomic number 84) emits an alpha
particle, which of the following decay products results?
a. Bismuth (atomic mass 209 & atomic number 83)
b. Lead (atomic mass 206 & atomic number 82)
c. Thallium (atomic mass 204 & atomic number 81)
d. Mercury (atomic mass 201 & atomic number 80) - Precise Answer
✔✔b. Lead (atomic mass 206 & atomic number 82)
Atomic Mass is:
a. the number of protons in the nucleus
b. the total number of protons & neutrons in the nucleus
c. a nuclear particle that has an atomic weight of one and is electrically
neutral
d. a particle that contains all the positive charge and essentially all the
weight of the atom - Precise Answer ✔✔b. the total number of protons
& neutrons in the nucleus
Which of the following is not a chemical asphyxiant?
a. carbon monoxide
b. carbon dioxide
c. hydrogen sulfide
,d. hydrogen cyanide - Precise Answer ✔✔c. hydrogen sulfide
Which of the following displaces oxygen but does not actually interfere
with
the human body's ability to use oxygen?
a. carbon dioxide
b. nitrogen
c. noble gases
d. all of the above - Precise Answer ✔✔d. all of the above
Which of the following statements regarding oxidation is always
correct?
a. oxygen must be a chemical reactant for an oxidation reaction to occur
b. oxidation is a violent reaction that always produces heat and light
c. oxidation always results in at least one electron being transferred from
one atom to another
d. the valence of the atom is reduced occurs when it gives up an
oxidation electron - Precise Answer ✔✔c. oxidation always results in at
least one electron being transferred from one atom to another
Which of the following seven steps for preparing hazardous materials
for transport is in the correct order?
a. proper shipping name, classify, package, mark, label, paperwork,
placard
, b. classify, proper shipping name, package, mark, label, paperwork,
placard
c. package, classify, proper shipping name, mark, label, paperwork,
placard
d. package, mark, label, classify, proper shipping name, paperwork,
placard - Precise Answer ✔✔b. classify, proper shipping name, package,
mark, label, paperwork, placard
Boiling Point is the temperature at which:
a. the vapor pressure of a solid just equals atmospheric pressure
b. the vapor pressure of a liquid is greater than atmospheric pressure
c. the vapor pressure of a liquid is less than atmospheric pressure
d. the vapor pressure of a liquid just equals atmospheric pressure -
Precise Answer ✔✔d. the vapor pressure of a liquid just equals
atmospheric pressure
Flash point is the:
a. maximum temperature of a liquid at which it give off vapors sufficient
to form an ignitable mixture with air
b. maximum temperature of a liquid at which it gives off vapors
sufficient to form an ignitable mixture with water
c. minimum temperature of a liquid at which it gives off vapors
sufficient to form an ignitable mixture with air
d. minimum temperature of a liquid at which it gives off vapors
sufficient to form an ignitable mixture with water - Precise Answer
✔✔c. minimum temperature of a liquid at which it gives off vapors
sufficient to form an ignitable mixture with air
, BLEVE is the acronym for:
a. Boiling Liquids Evaporate Very Expensively
b. Boiling Liquids Erode Very Efficiently
c. Boiling Liquids End Vapor Explosions
d. Boiling Liquid Expanding Vapor Explosion - Precise Answer ✔✔d.
Boiling Liquid Expanding Vapor Explosion
Cobalt-60 has a 5 year half life. If the initial activity of a Cobalt-60
source is 20 mCi, what is the activity after 10 years in mCi?
a. 5
b. 0
c. 2
d. 10 - Precise Answer ✔✔a. 5
The exposure rate at a distance of 1 foot from a radioactive source is 20
rnR/hr. What is the exposure rate in mR/hr. at 10 feet?
a. 0.1
b. 0.2
c. 0.3
d. 0.4 - Precise Answer ✔✔b. 0.2
Which of the following is not regulated by EPA as an environmentally
toxic metal?
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller YANCHY. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $16.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now