Question 37
Which of the following is not a step in balancing redox reactions in acidic solution, using the half-reaction method?
H2O and OH- are added as needed to the half-reaction equations to make the number of oxygen and hydrogen atoms balance.
Divide the chemical equation into two half-reaction equations, identifying which half-reaction is oxidation and which is reduction.
H2O and H+ are added as needed to the half-reaction equations to make the number of oxygen and hydrogen atoms balance.
Multiply each term in one of the half-reaction equations by a factor that will make the number of electrons lost (in the oxidation) equal to the number of electrons gained (in the reduction).
38.Consider the following unbalanced redox reaction: MnO4- (aq) + SbH3 (aq) → MnO2 (s) + Sb (s)
What is the reducing agent?
MnO4-
SbH3
MnO2
Sb
Question 39
Consider the following unbalanced redox reaction:
What is the oxidizing agent in the reaction?
Cr2O72-
NO2-
Cr3+
NO3-
Some type of path is necessary to join both half-cells in order for electron flow to occur.
TRUE
FALSE
Question 42
What is the source of the electric current produced by a voltaic cell?
a spontaneous oxidation-reduction reaction
competing salt bridges
non-spontaneous reduction at the cathode
an imbalance of ion charges
Question 43
In general, breaking bonds results in a release of energy.
TRUE
FALSE
Question 44
A particular chemical reaction releases energy. It is possible to say the reactants had a higher energy than the products.
TRUE
FALSE
Question 45
When heat is applied to a solid and a gas begins to form, the change in entropy is positive.
TRUE
FALSE
Question 46
Which of the following is an example of +ΔS?
A solid being sublimed
A gas being condensed to form a liquid
A liquid freezing into a solid
A gas being compressed at low temperature to a solid
Question 47
A reaction contains two reactants, A and B. If A is doubled, there will be a greater number of effective collisions between reactants.
TRUE
FALSE
Question 48
You can study reaction rates to answer which of the following questions?
Will the reaction be reversible?
Will the reaction occur?
How can the reaction be slowed down?
How many grams of product will be formed?
Question 49
Which of the following statements regarding chemical equilibrium is true?
Equilibrium is shown with a single arrow and/or an equal sign.
A system at equilibrium maintains the concentrations of all reactants/products over time.
A system at equilibrium stops.
Equilibrium is signified only with an equals sign.
Question 50
Which change in the nucleus of an atom is responsible for the emission of an electron?
neutron to proton
proton to neutron
proton to electron
electron to proton
Question 51
Which of the following is not true about beta emissions?
Difference of the atomic number by one between the old element and new element formed
Are written as 0-1e
Cannot penetrate concrete
Less penetrating than alpha emissions
Question 52
Which of the following represents positron emission?
3015P → 3014Si + ___
23892U → 23490Th + ___
147N + 42He → 178O + ___
23490Th → 23491Pa + ___
“Is this question part of your assignment? We can help”
- WE OFFER THE BEST CUSTOM PAPER WRITING SERVICES. WE HAVE DONE THIS QUESTION BEFORE, WE CAN ALSO DO IT FOR YOU.
- Assignment status: Already Solved By Our Experts
- (USA, AUS, UK & CA PhD. Writers)
- CLICK HERE TO GET A PROFESSIONAL WRITER TO WORK ON THIS PAPER AND OTHER SIMILAR PAPERS, GET A NON PLAGIARIZED PAPER FROM OUR EXPERTS
QUALITY: 100% ORIGINAL PAPER – NO ChatGPT.NO PLAGIARISM – CUSTOM PAPER
Looking for unparalleled custom paper writing services? Our team of experienced professionals at AcademicWritersBay.com is here to provide you with top-notch assistance that caters to your unique needs.
We understand the importance of producing original, high-quality papers that reflect your personal voice and meet the rigorous standards of academia. That’s why we assure you that our work is completely plagiarism-free—we craft bespoke solutions tailored exclusively for you.
Why Choose AcademicWritersBay.com?
- Our papers are 100% original, custom-written from scratch.
- We’re here to support you around the clock, any day of the year.
- You’ll find our prices competitive and reasonable.
- We handle papers across all subjects, regardless of urgency or difficulty.
- Need a paper urgently? We can deliver within 6 hours!
- Relax with our on-time delivery commitment.
- We offer money-back and privacy guarantees to ensure your satisfaction and confidentiality.
- Benefit from unlimited amendments upon request to get the paper you envisioned.
- We pledge our dedication to meeting your expectations and achieving the grade you deserve.
Our Process: Getting started with us is as simple as can be. Here’s how to do it:
- Click on the “Place Your Order” tab at the top or the “Order Now” button at the bottom. You’ll be directed to our order form.
- Provide the specifics of your paper in the “PAPER DETAILS” section.
- Select your academic level, the deadline, and the required number of pages.
- Click on “CREATE ACCOUNT & SIGN IN” to provide your registration details, then “PROCEED TO CHECKOUT.”
- Follow the simple payment instructions and soon, our writers will be hard at work on your paper.
AcademicWritersBay.com is dedicated to expediting the writing process without compromising on quality. Our roster of writers boasts individuals with advanced degrees—Masters and PhDs—in a myriad of disciplines, ensuring that no matter the complexity or field of your assignment, we have the expertise to tackle it with finesse. Our quick turnover doesn’t mean rushed work; it means efficiency and priority handling, ensuring your deadlines are met with the excellence your academics demand.