Sodium Sulfide (Na2S)
Iron (III) Nitrate (Fe(NO3)3
Na2S (aq) + Fe(NO3)3 → 2Na+ + S2- + Fe2+ + 3NO3
As long as the charges are equivalent from both sides of the equation then you are done.
We know the charges are equivalent because Na = +, S = 2+, Fe = 2-, and NO3 = -
I was just thinking about this questions yesterday. Being a scientist, the comment was made that when you love science, you love the exciting and you love the tedious. So, I have my five things...
1. Make it personal. I start by listening to the student and what gets them excited and what they are fearful of in that environment.
For example: I have a Math student who loves basketball. He hates math and is very athletic. I ask him "what would you do to increase your free-throw percentage from 52% to 91%?" His response, "I would do anything!" But, he is bad at math on paper, so we come up with a way for him to track his free-throws, shooting percentage, overall efficiency, etc and he calculates these items.
2. Use Analogies. After listening to my student, I start putting all my questions in form that they will understand and love. The student starts forming their own questions because they have learned how to think rather than have a blank...
So my experiment with the waiting list was a mixed success. I had some students remain interested when I contacted them as availability popped up later in the semester, but it was about 20% of the people. It was still a useful way to remain visible to students so I'm going to continue it.
I have room this Fall for another student or two, so please contact me ASAP to avoid the waiting list! I'll have the most available time slots for the least amount of traveling. This means that students who want to meet in Manhattan will have the easiest time / find my schedule the most flexible.
I've started doing a little tutoring in Python programming, so if anybody is interested in working on that at a discounted rate please contact me!
Happy August of 2015! I hope that you’re getting thoroughly relaxed and enjoying your summer.
If you are interested in a healthcare career, I definitely encourage you to pursue it! Don't let the fact that you may still be in high school or that you already may have a career in another field, stop you from exploring the possibilities in healthcare. If you want to succeed in the competitive environment surrounding most healthcare careers, academic preparation is very important. If you have any questions related to healthcare, please let me know, and I will answer them or refer you to other resources. I love helping students in science and healthcare related studies!
1. Not studying early enough. I often compare chemistry to TV shows like Game of Thrones or Mad Men—you have to watch the series from the beginning or else you'd be completely lost. Chemistry classes and textbooks are set up in a very linear way. The harder you work earlier in the class, the less work you have to do the rest of the semester.
2. Hating the class too early. Don't be a member of the sheep repeating, "Ugh, this class sucks!" If you're a first-time chem student, how do you know this class sucks? Do you actually find the material uninteresting, or are you just repeating what everyone else says?
3. Not practicing. Studying for chemistry is kind of like perfecting a good jump shot or learning a new song on a piano. The more time you spend with it, the better you'll be.
Algebra 2/Trigonometry: http://www.nysedregents.org/a2trig/home.html
Math A, Math B, Integrated Algebra, Other Math: http://www.nysedregents.org/regents_math.html
Earth Science: http://www.nysedregents.org/EarthScience/
I received my BS in Physical Chemistry from Chongqing University, China and my Ph.D in Biochemistry from Miami University, USA. I have extensive teaching experience in college-level General Chemistry, Organic Chemistry, Biochemistry and Plant Biology as I served as a Teaching Assistant in Miami University for 4 years. I know their backgrounds and ways to improve their grades. Right now I am tutoring AP chemistry and Chemistry Olympiad in an education institute in the Bay Area. During my Ph.D, I did independent research in biochemistry, molecular biology, cell biology and plant biology. I also mentored undergraduates in developing research proposals and projects for fairs/conferences.
My goal is to help students to understand, summarize and prepare for their exams to obtain desired results in a reasonable period of time. During my teaching, I strive to foster an exploratory atmosphere by asking questions and knowing their backgrounds/weakness. I try to make connections between...
A doctor has ordered 325 mg of aspirin. The aspirin is available as a solution that contains 0.50 g of the medication per mL. How many mL of the solution would the patient need ?
1. Write down all of the information that you have.
a. 325 mg aspirin
b. 0.50 g/mL aspirin solution
2. What are you looking for?
a. x mL of aspirin solution needed
3. Set up the problem to solve for mL of aspirin solution
325 mg aspirin x (1 mL) = ________ mL of aspirin
4. Convert mg aspirin -> grams aspirin
325 mg aspirin x (1g) = .325 g aspirin
5. Solve by plugging Step 4 into Step 3.
.325 g aspirin x (1 mL) = 0.65 mL aspirin
The Table of Metric Conversions is especially important for the students I tutor in chemistry. Below are some tips or important aspects of the table to keep in mind. The table I have included has common conversions
Prefix Symbol Factor
Giga G 10^9
Mega M 10^6
Kilo k 10^3
Base unit _ 10^0 or 1
Centi c 10^-2
I am a High School Science Teacher and we deal with a lot of word problems that contain many variables that could fit into many different equations. Here is how I break down the content step by step for my students.
A box is accelerating across a frictionless surface. It is being pushed with 75 newtons of force and the has a mass of 10 kilograms. What is the magnitude of the box's acceleration?
1) You want to identify and label all variables presented to you in the problem.
Ex: F = 75 N, m = 10 kg
2) Identify and Label the Variable the question is asking you to find.
Ex: a = ?
3) List possible known equations that have the variable you need to solve for.
Ex: a = v/t
F = ma
4) Choose the equation that has variables that are known from the problem.
Labs associated with the pre-med sciences are also required, and the difficulty of these labs varies depending on which school you go to. The most frequent lament by college students is that their labs and lab reports command an unreasonably large chunk of their time, despite being only worth 1 credit. Most college courses are 3 credits, meaning they meet for three hours of class per week; but labs, usually take anywhere from 3-6 hours per week, and ultimately do not carry much weight in terms of your overall grade in being just one credit. You would think that the work required to succeed in labs is adjusted proportionally, but it's not. Most labs have weekly reports and a final paper/project at the end of the semester, right before finals begin. Last year, I spent every Sunday just working on weekly physics lab reports. I did well, but consistently lost a full day that I could have used towards other work. That's the dilemma, though. You...
So I've reached capacity again this year on students, but I'm trying something new. I've created a Waiting List rather than hiding my profile. I'm curious if I'll have a number of students waiting for the same subjects, which will allow me to come up with new ways to help everyone. Perhaps if I have several students uptown (or wherever) I will be able to offer a group lesson that any/everybody working on the same subjects can attend and help out people on the waiting list.
If you're looking to get inspired about Chemistry, I recommend you check out the very cool reactions in this video:
Or if you're a student (or a parent) trying to convince yourself (or your child) about the importance of working hard at Math & Science, I recommend checking out these infographics: http://www.vox.com/2014/10/7/6910485/13-charts-that-explain-why-your-college-major-matters
Chemistry, in my opinion, is the most widely applied subject in the educational system. You can apply chemistry when you're cooking, cleaning, filling up your car, brewing beer or wine, welding, dating (carbon and speed dating), and thousands of industrial processes. I once heard from one of my chemistry professors, Dr. Chad Morris, "Chemistry is applied physics, and physics is applied math." Therefore physics, chemistry, and math all work in harmony.
You probably apply chemistry every day and don't realize it. When you make coffee in the morning, ever wondered about the chemistry involved in making a cup of joe? You have to first grind the roasted coffee beans to expose the caffeine and flavor compounds housed within the beans. You then have to filter hot water through the grinds to extract the much needed caffeine and flavors. Water works as a solvent to dissolve the polar caffeine and flavor molecules which pass through the coffee filter and into your carafe...
I think, by far, the most important part of being successful in organic chemistry is the ability to stay on top of the material. I'll start with this piece of advice for those you who are planning on completing both sections.
I know, I know, it's advice that everyone gives for every type of memorization, but I think that it especially helps with the amount of new reactions that you will see, especially in orgo II.
My recipe for the cards is to make cards that have the reactant(s) and the reagent(s) with a question mark where the product(s) would be.
e.g. CH3CHCHCH3 -----Br2-----> ?
This way will help you to recognize which reagents do what.
The other style is to leave out the reagents.
e.g. CH3CHCHCH3 -----?-----> CH3CHBrCHBrCH3
(You'll want to draw them out probably, but this software doesn't allow that)
If you are like me, you want to get a head start on things -- "hit the ground running," as they say. What better way than to get started on the new year in academics! I always found that when I was in high school or college, summer reading was very enjoyable. There were no deadlines -- I could nestle up by a tree and read for hours. I recommend giving it a shot.
When it comes to chemistry, what better way to get started than reading some basics. One of my favorites is Bill Bryson's
A Short History of Nearly Everything. It is a great overview of science in general. I also recommend John Gribbin's
In Search of Schrodinger's Cat. It is an amazing story about the discovery of quantum mechanics and is a must for all explorers of science.
It is also a good idea to get a chemistry set and do some basic chemistry experiments. It is a fun and interesting activity! A lot of chemistry experiments can even be done in one's own household...
I have found many schools unable to expose students to math and science in the laboratory environment due to costs. I have found a great place fro students to work on all kinds of math and science activities on line. I have all of my students work on the speed drill under arithmetic. Fluency in math is critical.
Please take a look at this website and let me know what you think.
The education system, such a complex and convoluted series of practices and hierarchies, where does the student of the 21st century fit? Education now-a-days seems to have a greater goal of higher efficiency compared to student individuality in the class room. With a ballooning population, low teacher salaries, and out dated resources, we are in for a crisis situation in the coming decades with our current system. So many individuals I know that have entered the teaching field with the mind set that they are going to shake things up, and really start to perpetuate a difference, have more often than not been met with stark opposition and resistance. Something that people may find counter-intuitive at best. The education system isn't going to change overnight, that the beauty of incorporating a tutor into a student's life. This gives the student the individual one on one attention that a growing, curious mind deserves. I'm a scientist in my day to day life, holding a BS in Microbiology...
Let us be brutally honest here. You, the student, have spent the last few weeks agonizing over doing well on the chemistry regents and subsequently had nightmares about the prospects. Even being a victim of Freddie Krueger “Nightmare on Elm Street” seemed to have much more appeal than preparing and taking the chemistry regents. On the BIG day you probably put on a good face as you made your way to your seat. Then, you sat down just in time so that your classmates didn’t see your knees knocking together and detect that anything was amiss. Once the test started you turned the pages and looked at the problems. At this moment you wished you could just get up and leave and never come back. Instead, you take a few minutes and hope that the question would somehow trigger some signal in your brain that would unearth some forgotten memory of how to solve the problem in front of you but as the...
The school year is nicely wrapped up and New York students are filled with trepidation at the prospect of encountering the chemistry regents face to face which is just a few short days away. Next Tuesday to be exact. Admittedly, there is not much time to learn concepts that should have been learned earlier on in the school year but if you absorbed just a few critical elements along the way you should do pretty well. In other words, you need to put your thinking caps on. One thing that you should have picked up is the concept of the ionic bond. In everyday English, this translates to an electron from an atom( the less electronegative one) is literally transferred to the atom with the greatest electronegativity. Electronegativity is in my estimation is a hunger for electrons in an atom by another dissimilar atom. It actually is an electrostatic attraction for the electron from the lesser electronegative atom. The electron that was transferred resides...