WebExactly 1 mol of pb(cio2)2 contains how many moles of pb, ci, and o EXPLAIN How many grams of lead (Pb) are in 39.8 moles of lead? Calculate the number of lead (Pb) atoms in … Web23 jun. 2016 · Avogadro's constant says that 1 mole of any atom contains 6.022 ⋅ 1023 atoms. In this case you have 3.40 ⋅ 1022 atoms: 3.40⋅ 1022 atoms 6.022 ⋅ 1023 atoms mol = 5.65 ⋅ 10−2mol Step 2 The atomic mass of helium (He) will give you the weight of one mole of this molecule: 1 mol = 4.00 gram: 4.00 g mol ⋅ 5.65 ⋅ 10−2mol = 0.226g
Answered: Ethanol, C₂H5OH, has a molar mass of… bartleby
Web31 mrt. 2024 · As we understand, one mole of any element possesses exactly 6.022⋅1023 atoms of that element. Aluminum is the two elements in the thirteenth queue of the … Web25 feb. 2016 · atoms of. P. b. ? Chemistry The Mole Concept The Mole. 1 Answer. anor277. Feb 25, 2016. Approx. 10−8 moles. imposed order
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WebASK AN EXPERT. Science Chemistry Ethanol, C₂H5OH, has a molar mass of 46.07 g/mol, and its density is 0.789 g/mL. How many moles of ethanol are present in a 475-mL sample of ethanol? (A) 10.3 moles (B) 8.13 moles (C) 13.1 moles (D) 17.1 moles. Ethanol, C₂H5OH, has a molar mass of 46.07 g/mol, and its density is 0.789 g/mL. WebAn industrial process for manufacturing sulfuric acid, H2SO4, uses hydrogen sulfide, H2S, from the purification of natural gas. In the first step of this process, the hydrogen sulfide is burned to obtain sulfur dioxide, SO2. 2H2S(g)+3O2(g)2H2O(l)+2SO2(g);H=1124kJ The density of sulfur dioxide at 25C and 1.00 atm is 2.62 g/L, and the molar heat capacity is … Web35. How many atoms of He gas are present in a 450 mL container at 35°C and 740 mmHg? A) 0.017 He atoms D) 1.0 x 1022 He atoms B) 0.068 He atoms E) 7.9 x 1024 He atoms C) 1.2 x 105 He atoms Ans: D 36. Calculate the density, in g/L, of SF 6 … imposed over