Practical Detection Questions and Answers

A. What is the electron-pair geometry for P in PBr4*? B. What is the electron-pair geometry for CI in CIF3?

Complete and balance the equation and describe what you observed when you added 6M HNO3: Cu(s) + HNO3(aq) →

A mixture of 0.326 M Cl₂, 0.431 M F₂, and 0.842 M CIF is enclosed in a vessel and heated to 2500 K. Cl₂(g) + F₂ (g) 2 CIF(g) K₂ = 20.0 at 2500 K Calculate the equilibrium concentration of each gas at 2500 K. [CI,) = [F₂] = [CIF] = M M M

Calculate the volume of 0.200-M NaOH solution needed to completely neutralize 98.3 mL of a 0.280-M solution of the monoprotic acid HNO3. ml NaOH

An elementary reaction is known to be bimolecular. What does this mean? A) Two molecules of products are made B) The order of the reaction is 2 C) Two molecules must collide at the same time D) Both A and B E) Both B and C

A reaction that produces heat for welding and incendiary bombs is the thermite reaction: iron (III) oxide reacts with aluminum to produce aluminum oxide and iron. How many grams of iron (III) oxide can be converted to aluminum oxide by the reaction of 47.1 g of aluminum (Hint: first write a balanced equation)?

Use the balanced equation for the conversion of salicylic acid and acetic acid to aspirin to answer the following questions. C₂H6O3(s) + C₂H6O2l) ->C9H8O4(s) + H₂O(l) salicylic acid acetic acid aspirin How many grams of water are formed from 84.6 g of salicylic acid? g H₂0

Why did the 13 colonies revolt against England? I - England taxed them for all printed documents. II - England taxed them on glass, lead, paper, paint, and tea. III- England tried to put all the colonies under a single crown. IV - The colonists did not want The Church of England to be their required church. I & II I & III III & IV I, II & IV

The pressure of a sample of helium is 8.184 atm in a 271.9 mL container. If the container is compressed to 25.2 mL without changing the temperature, what is the new pressure? a. 88.3 b. 0.759 c. 837 d. 361

What is the formula for the ionic compound formed from the elements below? aluminum and selenium? Al₂Se3 AlSe2 Al3Se2 AlSe Al₂Se

How can you use quantitative chemistry and reaction dynamics to explain and optimize industrial processes and reactions that happen in everyday life?

Read the following excerpt from the opening of Maxine Hong Kingston's "No Name Woman." What atmosphere is established by this opening? "'You must not tell anyone, my mother said. 'what I am about to tell you. In China your father had a sister who killed herself. She jumped into the family well. We say that your father has all brothers because it is as if she had never been born."" Joyful excitement Angry questioning Depressed nostalgia Shocked curiosity

Pick the molecule which is NOT a 1H NMR solvent. A CDCI3 B. CH₂CCD3 C. D₂O D. C6H6 A B C D

A chemist is studying the following equilibirum, which has the given equilibrium constant at a certain temperature: 3O₂(g)=2O3(g) Kp=8. x 10-6 He fills a reaction vessel at this temperature with 7.0 atm of oxygen gas. Use this data to answer the questions in the table below. Can you predict the equilibrium pressure of O3, using only the tools yes available to you within ALEKS? If you said yes, then enter the equilibrium pressure of O3 at right. Round your answer to 1 significant digit.

What are the product(s) in this equation? Pb(NO3)₂(aq) + NaCl(aq) → PbCl₂(s) + NaNO3(aq) Pb(NO3)2 PbCl₂ PbCl2 and NaNO3 Pb(NO3)2 and NaCl

A fellow classmate is having trouble differentiating between the terms "heterogeneous mixture" and homogeneous mixture." Explain the two and five at least one example of each type of mixture.