Question

yomon U. What is the mass of 7.235 x 10Ⓡ Nickel atoms? a. Calculate the number of grams in each quantity of elemental atoms b. 7.6 x 102 Os atoms d. 9.3 x 10? N atoms C. 6.8 x 10 K atoms e. 4.2 x 10" Xe atoms 6. Lighter bikes are faster. A cyclist buys a pure titanium framed bike. The titanium frame weighs 3 pounds. Determine the number of moles of titanium in the frame 7. Given the following molar masses and empirical formulas determine the molecular formula a. Cu4H,7N, 163.26 grams/mole C. CsH2N, 312.29 grams/mole b. CsH,N, 186.24 grams/mole d. P205. 283.88 grams/mole 8. Calculate the mass percent composition of each element in C.HON 9. The active ingredient in fingernail polish remover is Acetone. Fingernail polish remover is composed almost entirely of acetone. Acetone has a molecular formula of C3H8O. If a bottle of nail polish remover is 125 mL and the bottle is filled completely with Acetone, calculate the number of acetone molecules. The density of acetone is 0.788 g/mL.
Step by step: Please help me with question 5

Answer 1

2 Ane 5: » UUUUUUUUU Atomic mast Ni atom = 58.693 meon 6.022 * 1023 g tome Ini) having mast = 58.693 .: Latom of (Ni) = 58.693 6.0 22x10 23 7.235 x 1025 atomed Ni contain = 58:693 * = 7051.542 grame Now, Number of grome in each quantity. is 7.681022 Os atoms The lanowo 6.022x 1023 - 190.23 amu - ...7.6x1022 atome of Of = 190.23 x 7.6*1022 6.022 x 1023 = 24 grom - i 6.8x1024 K atome Similarly 6.022 X 1023 otome of K = 39.09 omu 9.6.8x1024 atome of K = 39.09 x 6-8x1024 441.5 gram 9. 3x10²'n atome Similarly!- 6.022 * 10 43 atome of Natoon = 14,09 .. 9.3x18 21 atome of N = 14,0 * 9.3x10? 6.0 22x1023 0.286 gram 1,2 x 10 Xe dong Similarly - 6.022 X103 atome a xe = 131.293 omul 4.2 X 103 ae g Xe = 134.293 x 4.3 x 13 6.022 X1623 DDDDDDDD) T 6.022 x 10²3 = 91.57 gram