Classification of Elements and Periodicity Questions

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

Designate the conjugate partners on the right side of this reaction: NH₄⁺(aq) + F‾(ag) → NH₃(aq) + HF(ag) a. conjugate acid: HF(aq) b. conjugate acid: NH₃(aq) c. conjugate base: HF(aq) d. conjugate base: NH₃(aq)

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

1. The element aluminum forms a_______ with the charge________ . 2. The symbol for this ion is _______ and the name is _________ ion. 3. The number of electrons in this ion is _______.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

Consider the following four cases i. A chemical process in which heat is absorbed. ii. A change in which q = 30 J, w = 44 J. iii A process in which a system does work on its surroundings with no change in q. iv. A process in which work is done on a system and an equal amount of heat is withdrawn. In how many of these cases does the internal energy of the system decrease? O 0 O 1 O 2 O 3 O 4

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

A 1.76 gram sample of an unknown gas is found to occupy a volume of 1.34 L at a pressure of 716 mm Hg and a temperature of 45 °C. The molar mass of the unknown gas is -------- g/mol.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

Which of the following order is correct O NaCl > KCl > RbCl > CsCl > LiCl (Melting point order) ○ BeF₂ < MgF₂ < CaF₂ < SrF₂ < BaF₂ (solubility order) O O₂ > N₂ > N > O (ionization energy) O Total number of bond angle greater than 109°28' in POF3 and PF3 is respectively 0 and 3.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

Which experimental conditions would maximize the yield of choloroethane and minimize the production of polychlorinated products during the free radical chlorination of ethane? A. equimolar amounts of chlorine & ethane B. use an excess of chlorine C. excess of ethane D. excess of chlorine & long reaction time E. equimolar amounts of chlorine & ethane and high reaction temperature

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

A chemist mixes 22.6 g of ethanol with 7.47 g of acetone and 89.1 g of 1-bromobutane. Calculate the percent by mass of each component of this solution. Round each of your answers to 3 significant digits. component mass percent ethanol ? acetone ? 1-bromobutane ?

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

At a certain temperature, 0.4211 mol of N, and 1.541 mol of H, are placed in a 5.00 L container. N₂(g) + 3H₂ ⥨ 2NH3(g) At equilibrium, 0.1401 mol of N, is present. Calculate the equilibrium constant, Kc.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

XeFn+ mH2O → A(Contain Xe) + Other Products Regarding above reaction, which of the following option is correct : O When n = 6 and m = 2, the hybridisation of Xe in A is sp^3d^2. O When n = 2 and m = 1, then other products has a diatomic colored gas. O When n = 6 and m = 3, then Electron pair structure of A is tetrahedral. O When n = 6 and m = 1, the hybridisation of Xe in A is sp^3d.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

Dr. Raisa and her team of geologists have been studying GPS data that shows that two plates moved apart. Which diagram shows what happened between the two plates as they moved away from each other? (a) Diagram A: A new plate from underneath filled in the gap that was created by the plates moving apart. (b) Diagram B: Sand and dirt filled in the gap that was created by the plates moving apart. (c) Diagram C: Ocean water filled in the gap that was created by the plates moving apart. (d) Diagram D: Soft, solid rock from underneath the plates rose and hardened, adding solid rock to the edges both plates.

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

13 1 point A flexible container at an initial volume of 6.13 L contains 7.51 mol of gas. More gas is then added to the container until it reaches a final volume of 13.5 L. Calculate the new number of moles of gas in the container, type your answer... 8 9 Next Previous 10 11

Inorganic Chemistry

Classification of Elements and Periodicity Solutions

15 1 point 9 Hellum gas in a 2.00 L cylinder is under 1.12 atm pressure. At 309 K, that same gas sample has a pressure of 2.56 atm. What was the initial temperature (in K) of the gas in the cylinder? type your answer... 13 Next Previous 14