Look at the four sets of quantum numbers below, How many sets are not allowed? n

Question

Look at the four sets of quantum numbers below, How many sets are not allowed? n=1, I=0, m_j = 0, m_s = 1/2 n = 2, I = 2, m_i = 2, m_s = 1/2 n=3, i = -2, m_i = 2, m_s = 1/2 n=4, I = 3, m_s = 1/2 a. all four sets are allowed b. one set is not allowed c. two sets are not allowed d. three sets are not allowed e. all four sets are not allowed Consider a 1L container of argon and a 1L container of helium. The gas in each container is at STP, Which statements below is correct? a. The density in grams/mL of each gas is the same. b. The mass of the gas is the same in the two containers. c. The speed of the atoms is the same in the two containers. d. The number of atoms is the same in the two containers. What is the molar masses of a gas that diffuses through a small hole at twice the rate of gaseous iodine (I_z, 252 g/mol) If the gases are at the same temperature? a. 514 g/mol b. 180 g/mol c. 126 g/mol d. 63 g/mol Nitrosylazide has the formula ON_4 and atom connectivity: O---N---N---N---N. Which of the four structures below is the best structure? Which of the following, when mixed as 0.1 M aqueous solutions, will result in the formation of a precipitate? a. K_2SO_4 and CrCl_3 b. KOH and Ba(NO_3)_2 C. NiBr_2 and AgNO_3 d. Li_2CO_3 and CsI

Explanation / Answer

23. (c) two sets are not allowed; 2 and 3.

24. (d) both containers having same number os atoms. Because at STP both having same volumes then both are with 1/22.4 moles of atoms.

25. (d) v1/v2 = (m2/m1)1/2; v1 = x then v2 = 2x

m1 = 252 g/mol then m2 = (v1/v2)2X m1 = 1/4 X 252 = 63 g/mol.

26. (b)

27. I dont have idea.

Best wishes.

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