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Eddi Din [679]
3 years ago
7

Which of the following are chemicals? clothing food fuels all of the above

Chemistry
1 answer:
Mamont248 [21]3 years ago
6 0

Answer:

i guess fuels are chemicals

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Aspirin (C9H8O4) may be synthesized by mixing salicylic acid (C7H6O3) with excess acetic anhydride (C4H6O3).
diamong [38]

Answer:

65.18% is the percent yield for this reaction.

Explanation:

C_7H_6O_3 + C_4H_6O_3\rightarrow C_9H_8O_4 + C_2H_4O_2

Moles of salicyclic acid = \frac{2.0 g}{138 g/mol}=0.01449 mol

According to reaction 1 mole of salicyclic acid gives 1 mole of aspirin .

Then 0.01449 mole of salicylic acid will give :

\frac{1}{1}\times 0.01449 mol=0.01449 mol of asprin

Mass of 0.01449 moles of aspirin :

= 0.01449 mol × 180 g/mol = 2.6082 g

Theoretical yield of aspirin = 2.6082 g

Experimental yield of aspirin = 1.7 g

The percent yield for this reaction:

\%(Yield)=\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100

=\frac{1.7 g}{2.6082 g}\times 100=65.18\%

65.18% is the percent yield for this reaction.

5 0
3 years ago
Write a balanced chemical equation for this reaction by completing the reaction below. Add the missing products and coefficients
Pie

To balance a chemical equation you must pay attention that the algebraic equation has the same number of element atoms in reactant and the product.

A chemical equation is a term to refer to the symbolic description of a chemical reaction, that is, the written representation of symbols. For example:

  • 2H₂ + O₂ ---> 2H₂O

The balance of an equation can be related to the law of conservation of matter, that is, the number of atoms of each element in the reactants is in the result.

Note: This question is incomplete, because the information some information is missing.

Learn more in: brainly.com/question/12271256

6 0
2 years ago
Why are solutions considered mixtures?
Alex_Xolod [135]
Solute and solvent form a solution, which means two different kinds of molecules/atoms/compounds are mixed together, therefore, it is a mixture.
6 0
3 years ago
LA MATERIA SE PUEDE PRESENTAR COMO
olya-2409 [2.1K]

Answer:

La materia está constituida por átomos, que a su vez forman moléculas. Las moléculas constituyen la mínima parte en la que se puede fragmentar una sustancia para que conserve sus propiedades. Todo lo anterior permite que la materia se pueda presentar en estado sólido, líquido y gaseoso.

Explanation:

6 0
3 years ago
A camcorder has a power rating of 17 watts. If the output voltage from its battery is 7 volts, what current does it use?
Salsk061 [2.6K]

Answer: The current use by the camcorder is of  2.42 amperes.

Explanation:

Power rating of the camcorder,P = 17 watt

The voltage from the battery,V = 7 volts

Power=Voltage\times Current

17 watts=7 volts\times I

I=\frac{17 watts}{7 Volts}=2.42 Ampere

The current use by the camcorder is of  2.42 Amperes.

4 0
3 years ago
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