Study guide for AP Chem midterm HELP PLEASE

In summary, the conversation covers various chemistry problems ranging from theoretical yield calculations to empirical and molecular formulas. The speaker requests assistance and step-by-step explanations for solving the problems. However, before receiving help, the speaker is reminded to attempt the problems and show their work.
  • #1
CDelapena2
1
0
These were the only questions out of the 110 question study guide that I didn't understand, I have no clue how to do them since it's been a while since I've done stuff from early chapters. I would love it if anyone can help me and give me a step-by-step! Thank you in advance!

Fe2O3 + 3CO --> 2Fe + 3CO2: 150g Fe2O3 is limiting reagent what is theoretical yield?

___ moles magnesium oxide produced by 3.82g of magnesium nitride with 7.73g water Mg3N2 + 3H2O --> 2NH3 + 3MgO

Cu + 2AgNO3 --> 2Ag + Cu(NO3)2: 6.35g Cu reacts with 33.98g of AgNO3 produce 18.75g of Cu(NO3)2 mass of Ag produced?

What is the balanced net ionic equation of precipitation of CaCO3 when Na2CO3 and CaCl2 are mixed

What is the molarity of NaOH if 48mL is needed to neutralize 35mL of 0.144 M H2SO4

the temperature of a 15g sample of lead goes from 22oC to 36oC upon adding 29j of heat what is its specific heat?

The molarity of 52.2g sucrose in 35Ml solution

There are ___ mol of Bromide ions in a 0.500 L of 0.300 M solution of AlBr3

Find concentration of Pb2+ in a solution when 100ml of 0.10M PbCl2 is mixed with 100Ml of 0.050M H2SO4

How many grams of NaOH are there in 500mL of a 0.17 M NaOH solution?

Empirical formula of 49.44% K, 30.3% O, 20.3% S

Molecular Formula of 40% C, 53.29% O, 6.7% H and 60.06 amu
 
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  • #2
CDelapena2 said:
I would love it if anyone can help me and give me a step-by-step! Thank you in advance!

Welcome to PF!

You need to attempt the problems (and show the work), before we can help you.
 
  • #3


I can understand your struggle with these questions. My advice would be to review the relevant chapters and concepts, and try to solve the problems on your own first. If you are still having trouble, you can seek help from your teacher or classmates. Here are some general steps to help you approach these questions:

1. The first question is asking for the theoretical yield, which is the maximum amount of product that can be formed from a given amount of limiting reagent. To find this, you will need to use the given mass of the limiting reagent (Fe2O3) and the molar mass of Fe2O3 to convert the mass to moles. Then, use the mole ratio from the balanced equation to determine the moles of product (Fe) that can be formed. Finally, convert the moles of Fe to grams using the molar mass of Fe.

2. For the second question, you will need to use the given mass of Mg3N2 and the molar mass of Mg3N2 to convert the mass to moles. Then, use the mole ratio from the balanced equation to determine the moles of product (MgO) that can be formed. Finally, convert the moles of MgO to grams using the molar mass of MgO.

3. The third question involves a stoichiometric calculation, where you will use the given masses of Cu and AgNO3 to determine the mass of Ag produced. First, convert the given masses to moles using their respective molar masses. Then, use the mole ratio from the balanced equation to determine the moles of Ag produced. Finally, convert the moles of Ag to grams using the molar mass of Ag.

4. The fourth question involves writing the balanced net ionic equation for the precipitation reaction between Na2CO3 and CaCl2. This can be done by first writing the complete ionic equation, and then canceling out any spectator ions to get the net ionic equation.

5. To find the molarity of NaOH in the fifth question, you will need to use the given volume and molarity of H2SO4 to determine the moles of H2SO4. Then, use the mole ratio from the balanced equation to determine the moles of NaOH used in the titration. Finally, divide the moles of NaOH by the volume in liters to get the molarity.

6. For the sixth
 

1. What topics should I focus on when studying for the AP Chem midterm?

When studying for the AP Chem midterm, it is important to focus on the main concepts and topics covered in your course. This includes atomic structure, chemical bonding, stoichiometry, gases, solutions, acids and bases, equilibrium, and thermodynamics. It is also important to review any labs or experiments that were conducted during the course.

2. How can I effectively prepare for the AP Chem midterm?

To effectively prepare for the AP Chem midterm, it is important to review your notes and class materials regularly. Practice solving different types of problems and questions, and make sure to understand the underlying concepts rather than just memorizing information. It may also be helpful to form a study group with classmates or seek help from a tutor.

3. What types of questions can I expect on the AP Chem midterm?

The AP Chem midterm will likely consist of a variety of multiple-choice and free-response questions. These may include calculations, conceptual questions, and questions based on experiments or data. It is important to be familiar with the types of questions and how to approach them.

4. Are there any online resources that can help me study for the AP Chem midterm?

Yes, there are many online resources that can help you study for the AP Chem midterm. Some helpful websites include Khan Academy, ChemCollective, and College Board's AP Chemistry page. You can also find practice exams and study guides from previous years to help you prepare.

5. How important is it to memorize formulas and equations for the AP Chem midterm?

While it is important to have a basic understanding of formulas and equations, it is more important to understand the concepts behind them. Make sure to practice solving problems using the formulas and understand how they relate to the concepts being tested. However, do not rely solely on memorization as it may not be helpful in the long run.

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