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padilas [110]
3 years ago
9

What's the purpose for a graduated cylinder

Chemistry
1 answer:
White raven [17]3 years ago
6 0

Answer:

Graduated cylinders are long, slender vessels used for measuring the volumes of liquids. They are not intended for mixing, stirring, heating, or weighing. Graduated cylinders commonly range in size from 5 mL to 500 mL.

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A sample of ammonia reacts with oxygen as shown. 4NH3(g) + 5O2(g) 4NO(g) + 6H2O(g) What is the limiting reactant if 4.0 g of NH3
antiseptic1488 [7]

<u>Ans: O2 because it produces only 0.20 mol of NO</u>

<u>Given:</u>

Mass of NH3 = 4.0 g

Mass of O2 = 8.0 g

<u>To determine:</u>

The limiting reagent in the given reaction

4NH3 + 5O2 → 4NO + 6H2O

<u>Explanation:</u>

# moles of NH3 = 4.0/17 g.mol-1 = 0.2353 moles

# moles of O2 = 8.0/32 = 0.25 moles

Based on the reaction stoichiometry:

1 mole of NH3 produces 1 mole of NO

Therefore, 0.2353 moles of NH3 will produce: 0.2353 moles of NO

Similarly, 1 mole of O2 will produce 4/5 moles of NO

0.25 moles of O2 will form: 0.25*4/5 = 0.2 moles of NO

Thus, O2 is the limiting reactant.



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