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alexdok [17]
3 years ago
14

Franklin was performing an experiment by combining hydrochloric acid and sodium hydroxide. He measured the mass of his reactant

materials to be 35g. The reaction resulted in the production of salt and water. He reported that his products weighed 32g.
Which best describes the results of Franklin’s experiment?
Chemistry
2 answers:
pashok25 [27]3 years ago
5 0

Answer:

B) an error occurred, the mass of the reactants should equal the mass of the products.

Explanation:I just know trust me

maxonik [38]3 years ago
3 0

Answer:

<u></u>

  • <u><em>B) an error occurred, the mass of the reactants should equal the mass of the products. </em></u>

<u><em /></u>

Explanation:

The answer choices are:

  • <em>A) no error occurred, some of the products are always lost as heat.</em>

<em />

  • <em>B) an error occurred, the mass of the reactants should equal the mass of the products. </em>

<em />

  • <em>C) an error occurred, the products should weigh more than the reactants. </em>

<em />

  • <em>D) no error occurred, water is not weighed when determining the weight of the products.</em>

<h2>Solution</h2>

The basis to answer this question is the law of conservation of mass.

Any chemical reaction satisfies the law of conservation of mass: mass cannot be either created nor destroyed, so, always, <em>the mass of the reactants equal the mass of the products.</em>

Thus, since he measured the mass of his reactant materials to be 35g and he reported that his products weighed 32g, his data are in clear contradiction of the law of conservation of mass. So, there is an error in his results: <em>the mass of the reactants should equal the mass of the products. </em>

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The mass unit associated with density is usually grams. if the volume (in ml or cm3) is multiplied by the density (g/ml or g/cm3
jok3333 [9.3K]

The weight in grams = 7.93 g

Given volume = 2.00 in^{3}

Given  density = 0.242 g/cm^{3}

We need to find the Mass(weight) in grams.

To find the weight in grams we need to keep in mind that the volume and density must use the same volume unit for cancellation. So that the volume units will cancel out, leaving only the mass units.

The unit of given volume is in^{3} and unit of volume in density is cm^{3} , so first we need to change the unit of volume from in^{3} to cm^{3} so that the volume units will cancel out, leaving only the mass units.

1 in^{3} = 16.39 cm^{3} (given conversion)

2 in^{3}\times \frac{(16.39 cm^{3})}{(1 in^{3})}

in^{3} units get cancel out leaving the cm^{3} unit.

2 in^{3} = 32.78 cm^{3}

Mass = Density X Volume.

Density = 0.242 g/cm^{3} and Volume = 32.78 cm^{3}

Mass =0.242\frac{g}{cm^{3}}\times 32.78 cm^{3}

Mass = 7.93 grams (g)


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