Which gas is br - Study guides, Class notes & Summaries

M1 FINAL COACHING EXAM - Questions and Answers (Complete Solutions) Which of the following represents the index of the protective power of colloids? A. Nuggets B. Lumina C. Poise D. Zsigmondy What is formed when an atom or cation acts as the center about which anions or molecules arrange themselves? A. Covalent compounds B. Ionic compounds C. Complexes D. Ionic-covalent compounds What does enthalpy refer to in thermodynamics? A. Latent heat B. Heat content C. Degree of total molecular D. Heat ...

2 © OCR 2023 1 The diagram shows part of Mendeleev’s Periodic Table. B 11 C 12 N 14 O 16 F 19 Al 27 Si 28 P 31 S 32 Cl 35.5 As 75 Se 79 Br 80 In 115 Sn 119 Sb 122 Te 128 I 127 (a) Give the symbols of the two elements shown in the diagram which are not in order of atomic mass. ........................................................... and ........................................................... [1] (b) Mendeleev left gaps for elements that had not ...

What phase change is taking place if DHsub = 26.1 kJ/mol is being used to calculate the heat involved in the process) 1)Liquid to solid 2) Gas to solid 3) Solid to liquid 4) Liquid to gas 5) Solid to gas - ANSWER3 Diethyl ether, (CH3CH2)2O , used as a solvent for extraction of organic compounds from aqueous solutions, has a high vapor pressure which makes it a potential fire hazard in laboratories in which it is used. How much energy is released when 10 g is cooled from 50.0°C to 10....

Inorganic Chemistry 2 Exam Review With 100% Correct Answers 2024 1) Which of the following statements about gases is false? A) All gases are colorless and odorless at room temperature. B) Distances between molecules of gas are very large compared to bond distances within molecules. C) Gases expand spontaneously to fill the container they are placed in. D) Gases are highly compressible. E) Non-reacting gas mixtures are homogeneous. - answerA) All gases are colorless and odorless at room ...

1 FINAL EXAM CHEM 219 EXAM | QUESTIONS & ANSWERS (VERIFIED) | LATEST UPDATE | GRADED A+ The speed of a wave (c) is the product of its frequency (ν) and wavelength (λ). Correct Answer: E = hv = h x c / λ nm to m or m to nm Correct Answer: 1 m / 10^9 nm or 10^9 nm / 1 m What is the maximum number of electrons that can have the quantum numbers n = 3, ℓ = 2, mℓ = -2? Correct Answer: The Pauli exclusion principle states that no two electrons in a given atom can share the sa...

Types of Electrolytes: correct answer: -strong: SOLUBLE & IONIC -weak: SOLUBLE & MOLECULAR -non-electrolytes: INSOLUBLE Solubility Rules correct answer: 1. Group 1A Metals (Li+, Na+, K+, etc.) 2. Ammonium (NH4+) 3. Nitrate (NO3-) 4. Acetate (C2H3O2-) or (CH3COO-) 5. Hydrogren Carbonate (HCO3-) 6. Chlorate (ClO3-) 7. Perchlorate (ClO4-) 8. Halogens (Cl-, Br-, I-) EXCEPT W/ (Ag+, Pb2+, Hg2^2+) 9. Sulfate (SO4^2-) EXCEPT W/ (Ag+, Pb2+, Ca2+, Sr2+, Ba2+) Insolubility Rules correct ...

Inorganic Chemistry 2 Exam Review With 100% Correct Answers 2024 1) Which of the following statements about gases is false? A) All gases are colorless and odorless at room temperature. B) Distances between molecules of gas are very large compared to bond distances within molecules. C) Gases expand spontaneously to fill the container they are placed in. D) Gases are highly compressible. E) Non-reacting gas mixtures are homogeneous. - answerA) All gases are colorless and odorless at room ...

ACS Gen Chem Practice Exam 77 Questions with Verified Answers Which is the strongest oxidizing agent? N a →← N a + + e - 2 . 7 1 V Cd →← Cd2+ + 2e- 0.40 V H2 →← 2H+ +2e- 0.00V Ag→← Ag++e- -0.80V (A) Na+ (B)H2 (C) Cd0 (D)Ag+ - CORRECT ANSWER Ag+ All are examples of Lewis acid-base reactions except Cu2+(aq) + 4NH3(aq) →← [Cu(NH3)4]2+(aq) HCl(g) + NH3(g) → NH4Cl(s) H+(aq) + OH-(aq) →← H2O(l) 2Na(s) + Cl2(g) → 2NaCl(s) - CORRECT ANSWER 2Na + Cl2 -&gt...

1. A nurse is admitting a client who has active tuberculosis to a room on a medical-surgical unit. Which of the following room assignments should the nurse make for the client? A. A room with air exhaust directly to the outdoor environment Rationale: A room with air exhaust directly to the outside environment eliminates contamination of other client-care areas. This type of ventilation system is referred to as an airborne infection isolation room. B. A room with another nonsurgical client ...

Knew ton Alta Chapter 4 Practice Exam Questions and Answers Graded A+ What is the chemical formula for the ionic compound magnesium oxide? a. MgO b. MnO2 c. Mg2O d. Mg2O3 a. MgO Magnesium forms a 2+ ion and oxygen forms a 2− ion. Putting these ions together gives the formula MgO, which is named magnesium oxide. What is the name of the oxyacid with chemical formula H3PO4? a. Phosphorus acid b. Phosphoric acid c. Phosphate acid d. Hydrophosphoric acid b. Phosphoric acid ...