WebHow many moles of \ ( \mathrm {Pb} \) is \ ( 9.34 \times \) \ ( 10^ {15} \) This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer Question: EXPERIMENT 4: Exploring the Mole Station 14 What mass of calcium chloride was used to prepare the solution below? 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
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Web7 apr. 2024 · Indicate the physical states of atoms and ions using the abbreviation (s), (1), or (g) for solid, liquid, or gas ... How many moles of gas in the above 20.00 L container at 50.00 oC and 1.000 atm ... consists of a capper electrode in 1 M CuSO4 solution and another half—cell that consists of a lead electrode in 1 M Pb(NO3)2 solution. WebDo a quick conversion: 1 grams Pb(NO3)2 = 0.0030192343342498 mole using the molecular weight calculator and the molar mass of Pb(NO3)2. Convert grams Pb(NO3)2 … cinda chatfield
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Web31 jul. 2024 · Answer: 9 mol Explanation: Let's consider the following half-reactions taking place in a galvanic cell. Reduction: Cr₂O₇²⁻ (aq) + 14 H⁺ (aq) + 6 e⁻ → 2 Cr³⁺ (aq) + 7 H₂O (l) Oxidation: Pb (s) → Pb²⁺ (aq) + 2 e⁻ We can establish the following relationships. 1 mole of Pb is oxidized when 2 moles of electrons circulate. Web15 okt. 2024 · A sample of ammonium phosphate (NH4)3PO4 contains 3.18 moles of hydrogen atoms then the on. of moles of oxygen atoms in the sample is 1 answer chemistry asked by Priti 517 views A molecule of ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. A ball-and-stick model of ethanol is made from … diabetes and massage therapy