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Aleks04 [339]
2 years ago
14

The density of benzene at 15°C is 0.8787g/mL calculate the mass of 0.1300 of benzene at this temperature

Chemistry
1 answer:
guajiro [1.7K]2 years ago
6 0

0.15mL

Explanation:

Given parameters:

Density of benzene = 0.8787g/mL

Volume of benzene = 0.13mL

Unknown;

mass of benzene  = ?

Solution:

Density is the mass per volume of substance. it is an intensive property of matter and does not depend on the amount of matter present.

The unit of density is usually reported in g/cm³ or kg/m³ or g/mL

Density = \frac{mass}{volume}

  Volume = \frac{volume}{density}

  Volume = \frac{0.13}{0.8787} = 0.15mL

learn more:

Density brainly.com/question/3764212

#learnwithBrainly

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25 g of NH₃ will produce 47.8 g of (NH₄)₂S​

<u>Explanation:</u>

2 NH₃ + H₂S ----> (NH₄)₂S​

Molecular weight of NH₃ = 17 g/mol

Molecular weight of (NH₄)₂S​ = 68 g/mol

According to the balanced reaction:

2 X 17 g of NH₃ produces 68 g of (NH₄)₂S​

1 g of NH₃ will produce \frac{68}{34} g of (NH₄)₂S​

25g of NH₃ will produce \frac{65}{34} X 25 g of (NH₄)₂S​

                                     = 47.8 g of (NH₄)₂S​

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4 0
2 years ago
Eddie is going to do an experiment to find out which freezes more easily—distilled water or salt water. In what order should he
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1. Make a Prediction

2. Fill both beakers with water

3. Dissolve salt in one of the beakers

4. Place both in the freezer and observe

5. Write a report

(Always make the prediction first! That's a hypothesis!)

4 0
2 years ago
Read 2 more answers
To determine the concentration of ethanol in cognac a 5.00 mL sample of the cognac is diluted to 0.500 L. Analysis of the dilute
julia-pushkina [17]

Answer : The molar concentration of ethanol in the undiluted cognac is 8.44 M

Explanation :

Using neutralization law,

M_1V_1=M_2V_2

where,

M_1 = molar concentration of undiluted cognac = ?

M_2 = molar concentration of diluted cognac = 0.0844 M

V_1 =  volume of undiluted cognac = 5.00 mL = 0.005 L

V_2 = volume of diluted cognac = 0.500 L

Now put all the given values in the above law, we get molar concentration of ethanol in the undiluted cognac.

M_1\times 0.005L=0.0844M\times 0.500L

M_1=8.44M

Therefore, the molar concentration of ethanol in the undiluted cognac is 8.44 M

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2 years ago
Ion arrangements of three general salts are represented below. h5sil917 h5sil917021 h5sil91703 which ion arrangement has the hig
vovangra [49]
This question is incomplete. Luckily, I found the same problem which is shown in the attached picture. To answer the question, we must know how the size and charge affect the lattice energy. The answer is: lattice energy increases with the increasing charge of the ions, and decreasing radius of the atoms. <em>Therefore, the ranking would be: A < B < C</em>.

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In a nuclear fission reaction a heavy nucleus divides to form smaller nuclei and one or more neutrons. Many nuclei can undergo f
Effectus [21]

Answer:

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Explanation:

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A = 236 - 94 = 3

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92 = Z + 36

Z = 92 - 36

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In reaction 2, equating the mass number on both sides

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236 = A + 143 + 3

236 = Z + 146

Z = 90

Equatoing the atomic number of both sides

92 + 0 = Z + 54 + 3*0

92 = Z + 54

Z = 92 - 54

Z = 38.

7 0
2 years ago
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