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kondor19780726 [428]
3 years ago
13

What is the formula for aluminum sulfate?

Chemistry
1 answer:
Bas_tet [7]3 years ago
3 0
Al2(SO4)<span>3 is the compound formula

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A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f
viva [34]

Answer: -2.373  x 10^-24J/K(particles

Explanation: Entropy is defined as the degree of randomness of a system which is a function of the state of a system and depends on the number of the random microstates present.

The entropy change for a particle in a system  depends on the initial and final states of a system and is given by Boltzmann equation as  

S = k ln(W) .

where S =Entropy

K IS Boltzmann constant ==1.38 x 10 ^-23J/K

W is the number of microstates available to the system.

 The  change in entropy is given as

S2 -S1 = kln W2 - klnW1

dS = k ln (W2/W1)

where w1 and w2 are initial and final microstates

from the question, W2(final) = 0.842 x W1(initial), so:

= 1.38*10-23 ln (0.842)

=1.38*10-23  x -0.1719

= -2.373  x 10^-24J/K(particles)

4 0
3 years ago
A calorimeter made from a can is used to measure the calories in a peanut. During the experiment, the
kari74 [83]

Answer:

The heat generated per gram of sample in calories is 0.87 g

Explanation:

Given that,

A calorimeter made from a can is used to measure the calories in a peanut.

During the experiment, the  measured calories were 35% of the true/accepted value given by references

Suppose, the mass of peanut is 0.4 g and find the

We need to calculate the heat generated per gram of sample in calories

Using formula of heat generated

q=\dfrac{q_{penut\ calorimeter}}{m_{peanut}}

Put the value into the formula

q=\dfrac{0.35}{0.4}

q=0.87\ g

Hence, The heat generated per gram of sample in calories is 0.87 g

3 0
3 years ago
When an acid and alkali react to form water and salt
coldgirl [10]

Answer:

Neutralisation involves an acid reacting with a base or an alkali, forming a salt and water.

5 0
2 years ago
Help! 100 point and I will give a brainliest and 5 star for solving this question.
inn [45]

Mass of H_2SO_4 required

Molarity

  • Moles of solute/Volume of solution in L

So

  • 0.1=n/0.1L
  • n=0.1(0.1)
  • n=0.01mol

Now molar mass of H_2SO_4

  • 2(1)+32+4(16)
  • 2+32+64
  • 98g/mol

Mass

  • 98(0.01)
  • 0.98g
7 0
2 years ago
The electron configuration for an atom is 1s22s22p2. How many electrons does the atom have?
dem82 [27]
If each atom of element D has 3 mass units and each atom of element E has 5 mass units, a molecule composed ..... The electron configuration for the carbon atom (c) is 1s2 2s2 2p2.
8 0
3 years ago
Read 2 more answers
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