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Calculate the number of fluorine (F) atoms in 0.115 g of uranium hexafluoride, UF6. (a) 1.18 x 1021 atoms (b) 3.27 x 10-4 atoms (c) 7.00 atoms (d) 2.12 x 1026 atoms (e) 2.69 x 1020 atoms
- 30 The total number of C atoms in 3.0 mole of C4Hy is (A) 7. 2264 x 1024 atoms (B) 1.9927 x 1023 atoms (C) 8. 0293 x 1023 atoms (D) 4.5165 x 1023 atoms C-12 H- 3.0m
Calculate the mass, in kg, of each sample. 1. 6.27×1026 cadmium atoms. 2. 1.93×1027 nickel atoms. 3. 6.43×1027 manganese atoms. 4. 1.89×1029 lithium atoms. Calculate the number of atoms in each sample. 1. 11.781 g Cr 2. 31.750 g S 3. 23.286 g Pt 4. 82.515 g Sn How many moles of atoms are in 7.00 g of 13C?
12. Determine the number of H atoms in 1.22 x 1020 C Ho molecules. 4.46 x 10exp23 H atoms 2.00 x 10exp-23 H atoms 1.18 x 10exp22 H atoms 7.32 x 10exp20 Hatoms 7. A liquid sample has the density of 11.9 g/cmº. Calculate volume in m3 if the mass is 0.225 kg 1.89 x 10exp-4 m3 9.10 m3 11.3 m3 1.89 x10exp-5 m3
1.93 1026 atoms Question 19 (1 point) What is the mass of 12.04 1023 atoms of O? 0 8.0g O 16g 0 32 g O 17 g Onone of these Question 20 (1 point) What is the mass in grams of 557 copper atoms? 1.46 10-23 g of Cu 5.88 10-20 g of Cu 3.54 104 g of Cu 5.28 1024 g of Cu ID 2.13 1028 g of Cu none of these Question 20 (1 point) What is the...
D Question 2 3.5 pts Calculate the number of hydrogen atoms present in 12.30 x 102 dekagrams of strontium hydrogen sulfate heptahydrate O 2.905 x 1024 O 4.011 x 1025 O 1.191 x 1026 0 2.905 x 1026 5.258 x 1025
Charge Calculate the total negative charge contained in one mole (6.0 x 1023 atoms) of helium. Each atom of helium has two electrons 1.
A 10.0-g sample of silicon contains _____ silicon atoms? O a) 6.02 x 1023 O b) 2.14 x 1023 O c) 0.356 od) 1.69 x 1026 e) 6.02 x 1024
Calculate the number of atoms in each of the following masses: a. 54.0 g of aluminum ogAlx imetat x 6.022 X 10 atoms Al 26.98gAT imotat = 1.21x102t atoms Al b. 69.45 g of lanthanum (La) c. 0.697 g of gallium d. 0.000 000 020 g beryllium 6) Calculate the mass of the following numbers of atoms: a. 6.022 x1024 atoms of tantalum (Ta) 6022 X 1024 atoms Tax imotta X 6.022 x 1023 abousta 180 95g Ta motta =...
Calculate the number of atoms in a 7.52 x 10 g sample of carbon. atoms atoms