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11111nata11111 [884]
3 years ago
9

Use the law of constant composition to complete the following table summarizing the amounts of iron and chlorine produced upon t

he decomposition of the sample of iron(III) chloride. Mass FeCl3 Mass Fe Mass Cl Sample A3.785 g1.302 g2.483 g Sample B1.475 g _____ _____
Chemistry
2 answers:
gayaneshka [121]3 years ago
7 0
So your question ask to complete the table in your problem using the law of constant composition and the table summarize the amount of iron and chlorine produced upon the decomposition of the sample iron and the data that would complete the table is FeCi3(162.2), Fe(0.508), Cl(0,967)
lisabon 2012 [21]3 years ago
3 0

Answer : The mass of Fe and Cl in sample B is 3.341 g and 6.371 g respectively.

Explanation :

Law of definite proportion : It is defined as a given compound always contains exactly the same proportion of elements by weight.

The balanced chemical reaction will be,

2FeCl_3\rightarrow 2Fe+3Cl_2

First we have to calculate the ratio of mass of FeCl_3.

\text{Ratio}=\frac{\text{Mass of }FeCl_3 \text{in sample A}}{\text{Mass of }FeCl_3 \text{in sample B}}

\text{Ratio}=\frac{3.785g}{1.475g}=2.566

Now we have to calculate the mass of Fe and Cl in sample B.

\text{Mass of Cl in sample B}=2.566\times \text{Mass of Cl in sample A}

\text{Mass of Cl in sample B}=2.566\times 2.483g=6.371g

and,

\text{Mass of Fe  in sample B}=2.566\times \text{Mass of Fe in sample A}

\text{Mass of Fe in sample B}=2.566\times 1.302g=3.341g

Therefore, the mass of Fe and Cl in sample B is 3.341 g and 6.371 g respectively.

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______ have no definite shape, but definite volume
NemiM [27]

Answer:

liquids

Explaination:

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3 years ago
What is the value of k, at 25 degrees Celsius
Dimas [21]
<h3>Answer:</h3>

298.15 K

<h3>Explanation:</h3>

W e are supposed to calculate the Value of K at 25°C

Assuming the value of K represent K, the question wants us to convert  degree Celsius to Kelvin.

  • To convert degrees Celsius to kelvin scale, we use the relationship;
  • Kelvin (K) = Degrees Celsius + 273.15 ; 273.5 is a constant
  • That is, to convert temperature from °C to Kelvin we add a constant of 273.15 to the °C given.

In this case;

Temperature is 273.15 °c

Thus, to Kelvin scale temperature will be;

= 25°C + 273.15

= 298.15 K

Therefore, the value of K, at 25°C is 298.15 K

7 0
3 years ago
Which squirrel do you think is better suited for the environment, the gray one or the white one? and why
boyakko [2]

Answer:

The grey squirrel.

Explanation:

This is your answer because the white one would have a harder time to blend in with the tree's and the environment, whilst the grey one is better suited for its environment better due to the fact that it can blend in with the trees, and hide better.

3 0
2 years ago
A calorimeter contains 500 g of water at 25°C. You place a hand warmer containing 100 g of liquid sodium acetate (NaAC) inside t
antoniya [11.8K]
The heat absorbed by the water is
Q = 500 (4.18) (32.2 - 25)
Q = 15048 J

The enthalpy of fusion of the sodium acetate is:
<span>ΔHf = Q / m
</span><span>ΔHf = 15048 / 100
</span>ΔHf = 150.48 J/g
3 0
3 years ago
Read 2 more answers
A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the bike and the rider is 85 kg. Find the kinetic ener
krek1111 [17]

KE=3070.625 J

Height = 3.686 m

<h3>Further explanation</h3>

mass of bike+rider=85 kg

velocity = 8.5 m/s

\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 85\times 8.5^2\\\\KE=3070.625~J

Conservation of energy :

(KE+PE)₁ (downhill) = (KE+PE)₂ (up the hill)

PE₁=0⇒h=0

KE₂=0⇒v=0(stop), so equation becomes :

KE₁=PE₂

\tt KE_1=3070.625\\\\KE_1=mgh_2\\\\3070.625=85\times 9.8\times h\Rightarrow h=3.686~m

5 0
3 years ago
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