Question

Question 16 Which of the following does NOT contain the same number of atoms as 3.30 moles of K? Not yet answered Marked out of 100 P Flag question Select one: A. 3.30 moles of Os B.3.30 moles of C. 1.50 moles of Ht D. 3.30 moles of Au O E. 3.30 moles of Co Question 17 How many molecules of Ny are in a 200.0 mL container at 780 mm Hg and 135°C? Not yet answered Marked out of 1.00 Flag Select one A. 1.12 x 10 molecules O B.3.30 x 1021 molecules O C.3.69 x 1021 molecules O D.3.50 1021 molecules E.1.06 x 10 molecules

Answer 1

23 ② As we know, I mole 2 60022 x 103 abous then, 3.30 moles - 3.30x 6.022 x 10 atams do for every element that has 3.30 moles, it will contain 3.30 x 6.022x1023 atoms. As except if all have the same value or mides, then it will not contain the same no. Of atoms as 3.30 medles of k. do correct option is ir (C) 1.50 nedes of Hf. 2 Volume = 2000 - 200 L = 0.2L in Pressure = 780 mm Hg 780 atm (oo 1 atm = 760 mmHg) 760 - 1.026 am Temperature = 135c a (135 + 273) K u 408 K and, R = 0.082 later mot kr Now, we know that, for a reales of a gaso & PV = nRT (where, a= no. of moles)

Тилл, PV & NRT n= PV RT. ») n = 1.0264 0.2 0.082 x 408 in 2 0.2052 33. 456 & n = 0.006133 2 80 No. of vides a 0.006133 80 No. Of nedenles - no. Of neoles & 6.022x103 20*006133 x 6.022 X1023 = 0.0369 x 1023 2. 3.69 x 1024 .. 8. The correct option is. (C) 3.69 x 102 molecules.
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