Answer:
90.71%
Explanation:
From the equation of reaction:
1 mole of salicylic acid requires 1 mole of methanol in order to produce 1 mole of methyl salicylate.
<em>mole = mass/molar mass</em>
1.6 g of salicylic acid = 1.6/138.121 = 0.012 moles
15 g of methanol = 15/32.04 = 0.47 moles
<em>Salicylic acid is the limiting reagent and hence, 0.012 moles of methyl salicylate would be produced according to the mole ratio above.</em>
0.012 moles of methyl salicylate = 0.012 x 152.1494 = 1.83 g
The theoretical yield of methyl salicylate is 1.83 g while the actual yield is 1.66 g.
<em>Percentage yield = actual yield/theoretical yield x 100%</em>
1.66/1.83 x 100% = 90.71%
Answer:
brainly blurred the half of the question i cant read it completely
Explanation:
Answer:
269 grams CuCl₂
Explanation:
To find the mass of CuCl₂ (copper (II) chloride), you need to (1) find moles CuCl₂ (via the molarity equation using the volume and molarity) and then (2) convert moles to grams (via the molar mass from the periodic table). The final answer should have 3 sig figs because the given number with the least amount of sig figs (4.00 mol/L) also has 3 sig figs.
<u>(Step 1)</u>
500.0 mL / 1,000 = 0.5000 L
Molarity (mol/L) = moles / volume (L)
4.00 mol/L = moles / 0.5000 L
(4.00 mol/L) x (0.5000 L) = moles
2.00 = moles
<u>(Step 2)</u>
Molar Mass (CuCl₂) = 63.546 g/mol + 2(35.45 g/mol)
Molar Mass (CuCl₂) = 134.446 g/mol
2.00 moles CuCl₂ 134.446 g
--------------------------- x --------------------- = 269 g CuCl₂
1 mole
False. You must be 21 to possess alcohol.
