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marusya05 [52]
4 years ago
13

Question 1

Chemistry
1 answer:
nignag [31]4 years ago
7 0
The right answer is Chemical Reaction.
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Aspirin can be made in the laboratory by reacting acetic anhydride (C4H6O3) with salicylic acid (C7H6O3) to form aspirin (C9H8O4
Over [174]

Answer:

Salicylic Acid is the limiting reagent

Theoretical yield Aspirin:  1.62 g

Percent yield: 76 %

Explanation:

The balanced chemical reaction is

      C4H6O3+C7H6O3 ⇒ C9H8O4+C2H4O2

Therefore is a 1:1 reaction. This  information along the molecular weights of C4H6O3 (MW: 102.9 g/mol), C7H6O3 (MW: 138.1 g/mol) and  C9H8O4 (MW: 180.2 g/mol) is sufficient to answer the question once we have converted the mass to mol for the reactants.

mass C2H4O2 = d x v = 2.90 mL x 1.08 g/mL = 3.13 g

# mol  C2H4O2 = 3.13 g/102.9 g/mol = 0.030

# mol  C7H6O3  = 1.28 g/138.1 g/mol = 0.009

Therefore C7H6O3  is the limiting reagent since it reacts 1: 1 with  C2H4O2

Calculation of theoretical yield:

0.009 mol C7H6O3 x 1 mol C9H8O4 / 1mol C7H6O3 = 0.009 mol  C9H8O4

Now we convert mol of aspirin :

0.009 mol C9H8O4 x  180.2 g/mol = 1.62 g ( 100 % yield)

Percent yield:

1.23 g collected/ 1.62 g x 100 = 76 %

5 0
4 years ago
What has the highest ionization energy Na, Mg, Al
padilas [110]

Answer:

al

Explanation:

5 0
3 years ago
Can someone give me an anology on a cave please? And Mars lol. They dont have to be nothing special just a little sentence thank
g100num [7]

Answer:

Explanation:

Mars is the fourth planet from the sun. Mars is more than 142 million miles from the Sun. A day on Mars is 24.6 hours. A year on Mars is 687 Earth days.

4 0
3 years ago
Temperate grasslands have trees and shrubs <br> True or false
laila [671]
it should be True unless if I’m wrong
5 0
3 years ago
Read 2 more answers
The pressure of a 250 mL sample of gas is 105 kPa. What would be the pressure if the volume were increased to 375 ml?
Arte-miy333 [17]

Answer:

<h2>The answer is 70 kPa</h2>

Explanation:

In order to find the pressure if the volume were increased to 375 ml we use Boyle's law

That's

P_1V_1 = P_2V_2

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the final pressure

P_2 =  \frac{P_1V_1}{V_2}  \\

From the question

P1 = 105 kPa = 105 , 000 Pa

V1 = 250 mL

V2 = 375 mL

So we have

P_2 =  \frac{105000 \times 250}{375}  =  \frac{26250000}{375}  \\  = 70000

We have the final answer as

<h3>70 kPa</h3>

Hope this helps you

8 0
4 years ago
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