Questions: 1. How many moles of acetate ions are present in a sample that contains 4.05 moles of chromium(II) acetate, Cr(CH3COO2) ? moles CH3COO^- 2. How many moles of Cr(CH3COO)2 are present in a sample that contains 3.41 moles of acetate ions? moles Cr(CH3COO)2

1. How many moles of acetate ions are present in a sample that contains 4.05 moles of chromium(II) acetate, Cr(CH3COO2) ? moles CH3COO^- 2. How many moles of Cr(CH3COO)2 are present in a sample that contains 3.41 moles of acetate ions? moles Cr(CH3COO)2
Transcript text: 1. How many moles of acetate ions are present in a sample that contains 4.05 moles of chromium(II) acetate, $\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}_{2}\right.$ ? $\square$ moles $\mathrm{CH}_{3} \mathrm{COO}^{-}$ 2. How many moles of $\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}$ are present in a sample that contains 3.41 moles of acetate ions? $\square$ moles $\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}$
failed

Solution

failed
failed

Solution Steps

Step 1: Determine the Formula of Chromium(II) Acetate

Chromium(II) acetate is represented by the chemical formula Cr(CH3COO)2\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}. This indicates that each formula unit of chromium(II) acetate contains two acetate ions, CH3COO−\mathrm{CH}_{3} \mathrm{COO}^{-}.

Step 2: Calculate Moles of Acetate Ions in 4.05 Moles of Chromium(II) Acetate

Since each mole of Cr(CH3COO)2\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2} contains 2 moles of CH3COO−\mathrm{CH}_{3} \mathrm{COO}^{-}, we can calculate the total moles of acetate ions by multiplying the moles of chromium(II) acetate by 2:

Moles of acetate ions=4.05 moles of Cr(CH3COO)2×2=8.10 moles of CH3COO− \text{Moles of acetate ions} = 4.05 \, \text{moles of } \mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2} \times 2 = 8.10 \, \text{moles of } \mathrm{CH}_{3} \mathrm{COO}^{-}

Step 3: Calculate Moles of Chromium(II) Acetate from 3.41 Moles of Acetate Ions

To find the moles of Cr(CH3COO)2\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2} from a given number of moles of acetate ions, we divide the moles of acetate ions by 2, since each mole of Cr(CH3COO)2\mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2} contains 2 moles of acetate ions:

Moles of Cr(CH3COO)2=3.41 moles of CH3COO−2=1.705 moles of Cr(CH3COO)2 \text{Moles of } \mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2} = \frac{3.41 \, \text{moles of } \mathrm{CH}_{3} \mathrm{COO}^{-}}{2} = 1.705 \, \text{moles of } \mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}

Final Answer

  1. 8.10 moles of CH3COO−\boxed{8.10 \, \text{moles of } \mathrm{CH}_{3} \mathrm{COO}^{-}}
  2. 1.705 moles of Cr(CH3COO)2\boxed{1.705 \, \text{moles of } \mathrm{Cr}\left(\mathrm{CH}_{3} \mathrm{COO}\right)_{2}}
Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Tyler is offered a part-time position at a pub across town. He quits his job at the bank and moves closer to the pub. The pub unexpectedly retracts hhis job offer. Tyler can sue for: a. Compensatory damages. b. Expectation damages. c. Punitive damages. (d.) Only a and b.
failedAnswered
Question 20 Mark this question Select the scenario that represents the incident stage of a conflict. Your father refuses to let you and your siblings visit since you decided to move him to a nursing home. You confront your husband about his purchase of a new set of golf clubs, after you both agreed to save up for a vacation. Your brother asked to borrow some money, and you're feeling a little uncomfortable because you don't know why he needs it. Your coworker has spent weeks complaining about your work ethic to anyone who will listen because she is angry with you. SAVE CONTINUE Report an issue with this question Type here to search
failedAnswered
A museum charges 7 per person for a guided tour with a group of 1 to 12 people or a fixed 91 fee for a group of 13 or more people. Write a function relating the number of people, n, to the cost, C. C(n)= if 0<n< if n >=
failedAnswered
The blue curve on the following graph shows the height of an airplane over 10 minutes of flight. The two black lines are tangent to the curve at the points indicated by A and B. The slope of the blue curve measures the plane's . The unit of measurement for the slope of the curve is At point A, the slope of the curve is , which means that the plane is at a rate of Calculating the slope, pay extra attention to the units of analysis.
failedAnswered
Al observar la gráfica de la función. Determine el valor de h(-2)+h(0)+h(-1) (A) 4 (B) 2 (C) 1 (D) -3