Test 3 233 2023

mHMAC3ccdb6aa11676716c83835709749d96e5#10001 Translate Reading list 1 of 11 I Review | Constants Periodic Table Part A Julia spent $50 on a book. The cost of the book was $18 less than twice what she spent on a backpack. How much did the backpack cost? Express your answer numerically in dollars. • View Available Hint(s) Hint 1. Identify the mathematical equation Hint 2. Identify the expression for the cost of the backpack

Use a model to explain how subatomic particles interact to cause ONE of the following periodic patterns. Use evidence and scientific reasoning to justify the validity of your model.

3. It is important to learn about quantum mechanies because: A. This information tells us why certain elements may be very reactive while others may be relatively non reactive. B.This information tells us how atoms grow to become larger molecules. C.This information tells us why certain elements are found as gases at room temperature. D.This information allows us to understand why some chemicals are colorful and others are dull and muted.

Find solutions for your homework science chemistry chemistry questions and answers give me answer of these questions in details .question 1. mention the conflicting issue arose between plum-pudding model and the outcomes of the cathode ray experiment.question 2. why pauli’s principle is called exclusion principle? explain it with 2px1 and 2py1 electron of nitrogen atom.question 3. let us consider a decomposition reaction with a reactant Question: Give Me Answer Of These Questions In Details .Question 1. Mention The Conflicting Issue Arose Between Plum-Pudding Model And The Outcomes Of The Cathode Ray Experiment.Question 2. Why Pauli’s Principle Is Called Exclusion Principle? Explain It With 2Px1 And 2Py1 Electron Of Nitrogen Atom.Question 3. Let Us Consider A Decomposition Reaction With A Reactant This question hasn't been solved yet Ask an expert Give me answer of these questions in details . Question 1. Mention the conflicting issue arose between plum-pudding model and the…

Which elements and properties did Mendeleev examine when he predicted the properties of eka-aluminum and eka-silicon? Be specific and methodical. This will help you with completing this lab. -20-

You as teacher would like to revise the periodic table in a creative way with your learners in Grade 9. In Grade 8 you have already discussed the periodic table by using a periodic table as indicated below. You decided to use another teaching strategy for your revision. Indicate what teaching and learning resources you will use to revise the periodic table and explain your teaching activity that you will use to ensure that the learners understand this concept.

Can you help with 17 and I showed you an answer from the answer book. I think the legend of the colors of the species might be incorrect.  Does this make sense. ?This is not a graded question as it is a practice question . I am 60 years old and helping my son prepare for the AP exam in a few months. We do questions at the back of the textbook by Zumdahl and Zumdahl

Dalton.c D neNote Insert Draw History Review View Learning Tools AP Test Atomic Structure NW1 Electrons in Atoms Periodic Table Reference Material 7. Two tanks are connected by a closed valve. Each tank is filled with gas, and both tanks are held at the same temperature. We open the valve and allow the gases to mix. Tank A contains 5.00 L of oxygen at 24 atm, and tank B contains 3L of nitrogen at 32.0 atm. a. After the gases mix, what is the partial pressure of each gas? b. What is the total pressure? 8. A gaseous mixture contains 3.23 g of chloroform, CHCI3, and 1.22 g of methane, CH4. Assuming that both compounds remain as gases, what pressure is exerted by the mixture inside a 50.0 ml metal container at 275C? What is each of the partial pressures in atm?

The fact that vitamin C extracted from rosehips and vitamin C prepared in the laboratory is the same substance is a statement of the   Group of answer choices 1. Law of Immutability of the Elements 2. Law of Constant Composition 3. Law of Conservation of Energy 4. Law of Conservation of Mass

Choose the block of the periodic table where astatine is located. a. The s-block b. The p-block c. The d-block d. The f-block

8. Explain the layout of the modern periodic table, including rows, columns, groups, and blocks. Be sure to explain what's in each part of the periodic table. f12 prt sc A 144 & 7 8

please explain the answer

Please help thank you!

Look at the table you completed for Lab 3 and answer the questions below; Write down one pattern you’ve noticed occurring in your Table. Can you explain the reason for the pattern you observed in question 1 above?  Look at the Periodic  Table of elements on your Reference Table are there any other patterns you notice?  Can you explain them?

Can you help me solve these questions please?

A Moving to another question will save this response. Question 5 WE This equation represents the formation of a typical ion from which group of the Periodic Table ? M: M²+ + 2 e² OA. 1A OB. 2A O C. 3A OD. 6A A Moving to another question will save this response. Class Lab Session....docx ^ PDF Document5.pdf PDF LAB3.pdf OLD H JA

Please help Number the answer the each question clearly

*Conclusion: Use complete sentences to answer each of the following: 1. What purpose did the cobalt glass serve? How did the flame look different through the cobalt glass? 2. In terms of electron behavior, describe how the colors observed in the flame test are produced. 3. Explain the process you used to identify each of the unknowns. 4. Using data from your lab, do any ions produce the same colors? If so, identify the element pairs and the color. 5. State two problems that may cause an inaccurate identification of an unknown when using flame tests. 6. How would you change the lab to reduce error in future trials?

Kindly solve this question correctly in 30 minutes and get the thumbs up please show me neat and clean work for Kindly provide correct solution

Number 9

The Group on the Periodic Table that BEST demonstrates the concept that elements in the same Group are NOT required to have the same chemical properties is Group  a. I A (1)  b. IV A (14)  c. VII A (17)  d. VIII A (18)

19-20

Which acid is named correctly? A. HNO3 nitric acid B. HNO3 nitrate acid C. H2SO3 sulfate acid D. H2SO4 sulfurous acid Reset Selection

Please help thanks

Please help complete that!

Solve correctly please.

Recognizing the intersection of scientific properties and ideas with the world around you is a key component of this course. By choosing a specific element to discuss, you will begin to understand how all substances are composed of elements that work together to form the world around us. Using the periodic table in Chapter 8 of your textbook, pick your favorite element. Describe this element's properties (i.e. atomic weight, atomic number, metal/non-metal, etc.). In addition to using your textbook, use reliable internet sources to research an interesting fact about this element. Use all of this information to explain why this is your favorite element. Cite your source(s) in APA format.

1.Who created the first periodic table? 2. How did this Russian scientist first arranged the elements? 3. Who “modernized" the periodic table? 4. How did he rearrange the elements?

Answer multiple choice 1. The region surrounding a charged particle in which an electric force is noticeable is called a (an)a. force of attraction. b. magnetic field. c. electric field, d. static electricity.2. On which pair of particles would a force of repulsion occur?a. proton-neutron b. electron-electron c, neutron-neutron d. electron-proton3. The three methods of giving an electric charge to an object are conduction,induction, anda. friction. b. resistance. c. direct current. d. grounding.4. Benjamin Franklin performed experiments to provide evidence that lightning isa form ofa. static electricity. b. magnetism. c. induction. d. voltage.5. When electrons move back and forth reversing their direction regularly, thecurrent is calleda. direct current. b. series current. c. electric charge, d, alternating current.6. In a wet cell, two different metal plates are immersed in a conducting liquidcalled an electrolyte. These two plates are calleda. voltaics. b. elect:rodes. c. amperes.…

What is used as basis for the better arrangement of elements in the periodic table and the key to the discovery of synthetic elements? a. atomic mass c. atomic neutronb. atomic bomb d. atomic number