Alina Dao

University of Wisconsin - Madison
Teaching Assistant

Biography

I completed my BA in Chemistry and Computer Science at Amherst College and went on to get my MA in Physical Chemistry at UW Madison. I am currently pivoting and looking to pursue a career in Computer Science.

Education

MA Physical Chemistry
University of Wisconsin - Madison
BA Chemistry
Amherst College
BA Computer Science
Amherst College

Educator Statistics

Numerade tutor for 5 years
82 Students Helped

Topics Covered

Mastering Chemical Reactions and Stoichiometry for Optimal Results
Understanding Electronic Structure: A Comprehensive Guide
Discover the Power of Kinetics: Unleash Your Potential

Alina's Textbook Answer Videos

03:32
Chemistry: Structure and Properties

Consider the reaction:
4 HCl(g) + O2(g)-2 H2O(g) + 2 Cl2(g)

Each molecular diagram represents an initial mixture of the reactants. How many molecules of Cl2 would form from the reaction mixture that produces the greatest amount of products?

Chapter 7: Chemical Reactions and Chemical Quantities
Alina Dao
01:58
Chemistry Principles and Reactions

Express the rate of the reaction
$$
2 \mathrm{~N}_{2} \mathrm{H}_{4}(l)+\mathrm{N}_{2} \mathrm{O}_{4}(l) \longrightarrow 3 \mathrm{~N}_{2}(g)+4 \mathrm{H}_{2} \mathrm{O}(g)
$$
in terms of
(a) $\Delta\left[\mathrm{N}_{2} \mathrm{O}_{4}\right]$
(b) $\Delta\left[\mathrm{N}_{2}\right]$

Chapter 11: Rate of Reaction
Alina Dao
01:23
Chemistry Principles and Reactions

Express the rate of the reaction
$$
2 \mathrm{~N}_{2} \mathrm{O}(g) \longrightarrow 2 \mathrm{~N}_{2}(g)+\mathrm{O}_{2}(g)
$$
in terms of
(a) $\Delta\left[\mathrm{N}_{2} \mathrm{O}\right]$
(b) $\Delta\left[\mathrm{O}_{2}\right]$

Chapter 11: Rate of Reaction
Alina Dao
02:31
Chemistry Principles and Reactions

Consider the combustion of ethane:
$$
2 \mathrm{C}_{2} \mathrm{H}_{6}(g)+7 \mathrm{O}_{2}(g) \longrightarrow 4 \mathrm{CO}_{2}(g)+6 \mathrm{H}_{2} \mathrm{O}(g)
$$
If the ethane is burning at the rate of $0.20 \mathrm{~mol} / \mathrm{L} \cdot \mathrm{s},$ at what rates are $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ being produced?

Chapter 11: Rate of Reaction
Alina Dao
03:14
Chemistry Principles and Reactions

For the reaction
$5 \mathrm{Br}^{-}(a q)+\mathrm{BrO}_{3}^{-}(a q)+6 \mathrm{H}^{+}(a q) \longrightarrow 3 \mathrm{Br}_{2}(a q)+3 \mathrm{H}_{2} \mathrm{O}$
It was found that at a particular instant, bromine was being formed at the rate of $0.029 \mathrm{~mol} / \mathrm{L} \cdot \mathrm{s}$. At that instant, at what rate
(a) are the hydrogen ions being consumed?
(b) is water being formed?
(c) are the bromide ions being consumed?

Chapter 11: Rate of Reaction
Alina Dao
02:11
Chemistry Principles and Reactions

Nitrosyl chloride (NOCl) decomposes to nitrogen oxide and chlorine gases.
(a) Write a balanced equation using smallest wholenumber coefficients for the decomposition.
(b) Write an expression for the reaction rate in terms of $\Delta[\mathrm{NOCl}]$
(c) The concentration of NOCl drops from $0.580 \mathrm{M}$ to $0.238 \mathrm{M}$ in $8.00 \mathrm{~min} .$ Calculate the average rate of reaction over this time interval.

Chapter 11: Rate of Reaction
Alina Dao
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