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hodyreva [135]
3 years ago
6

How do I begin this problem? How do I set up the problem? What formula do I use?

Chemistry
1 answer:
Ksju [112]3 years ago
4 0
Itis realy not working
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Which of the following is closest to the meaning of the term ancestor?
rjkz [21]

Answer:

I would say A

Explanation:

our ancestors are the people that lived long before us

8 0
3 years ago
Read 2 more answers
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
In which species does nitrogen have an oxidation number of zero?
VARVARA [1.3K]
The most common species of nitrogen in which its oxidation state is zero is the diatomic nitrogen (N_{2}). This is because the oxidation number of pure elements (whether alone as an atom or combined with other atoms of the same element such as the diatomic nitrogen) is always zero. 

In addition to diatomic nitrogen, there are diazonium (R-N_{2}^{+}) compounds where nitrogen has an oxidation number of zero.
4 0
3 years ago
An atom has a mass number of 24 and 13 neutrons. what is the atomic number of this atom? express your answer as an integer.
Murljashka [212]
A=24
N(n)=13

N(p)=A-N(n)

N(p)=24-13=11

²⁴Na - sodium

atomic number is 11
5 0
3 years ago
A mass of 14 kg is accelerated at 2m/s2 for a distance of 5 meters. How much energy is required?
soldi70 [24.7K]
Force = mass * acceleration

= 14 * 2 = 28N

Work done (energy) = Force * distance

= 28 * 5 = 140J
3 0
3 years ago
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