5. The number of nearest neighbors in a face centered cubic cell of identical atoms is: (A)4(B)8(C)1
4. A spherical glass container of unknown volume contains helium gas at 25°C and 1.960 atm. When a p
3.The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenuim-185,what is th
5. Which one of the following statements is correct?(A) For a 1.0-L container of neon gas at STP, it
3.What volume of 18.0 M sulfuric acid must be used to prepare 15.5 L of 0.195 M H2SO4 ?(A) 168 mL(B)
4. Air has an average molar mass of 29.0 g/ mol. The density of air at 1.00 atm and 30°C is(A) 29.0g
6. The Ostwald process for the commercial production of nitric acid from ammonia and oxygen involves
5. Consider the following gas samples: Which one of the following statements is false?(A) The volume
4. The following reactions are examples of(A)precipitation reactions.(B)redox, precipitation, and ac
5. A 0.307-g sample of an unknown triprotic acid is titrated to the third equivalence pointusing 35.
6. Consider two organic molecules, ethanol and benzene. One dissolves in water and the otherdoes not
7. Calculate the density of nitrogen at STP.(A)0.312 g/L(B)0.625 g/L(C)0.800 g/L(D) 1.25 g/L(E) 1.60
6.Consider the following ground state electron configuration: 1s22s22p4. Which of theions has this g
8. The van der Waals equation, , incorporates corrections to theideal gas law in order to account fo
9. A 25.0 g piece of aluminum (which has a molar heat capacityof 24.03J/℃mol) is heated to 82.4*C an
10. Calculate the lattice energy for MgO(s) using a Bomn-Haber cycle and the followinginformation:(A
7. Using the Heisenberg uncertainty principle, please calculate the ∆x for a baseball (mass = 145 g)
11. While mercury is very useful in barometers, mercury vapor is toxic. Given that mercury hasa △Hva
2. mole of O2 contains the same number of oxygen atoms as(A)0.667 mole of O3.(B)1.00 mole of CH3CO2H