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2 years ago

Find the percentage composition for iron in the following compound Fe2(CO3)3

Chemistry

1 answer:

schepotkina [342]2 years ago

5 0

14.285 % is the answer maybe but I am not sure

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1. What property do elements share if they are on the same row of the periodic table? What if they are in the same column?

Nimfa-mama [501]

If they are in the same row they have the same number of outer electrons on the same main shell also known as valence electrons

if they are in the same column they have the same number of valence electrons but on different main shells

8 0

3 years ago

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

deff fn [24]

Explanation:

Entropy means the amount of randomness present within the molecules of the body of a substance.

Relation between entropy and microstate is as follows.

S = $K_{b} \times ln \Omega$

where, S = entropy

$K_{b}$ = Boltzmann constant

$\Omega$ = number of microstates

This equation only holds good when the system is neither losing or gaining energy. And, in the given situation we assume that the system is neither gaining or losing energy.

Also, let us assume that $\Omega$ = 1, and $\Omega'$ = 0.833

Therefore, change in entropy will be calculated as follows.

$\Delta S = K_{b} \times ln \Omega' - K_{b} \times ln \Omega$

= $1.38 \times 10^{-23} \times ln(0.833) - 1.38 \times 10^{-23} \times \times ln(1)$

= $1.38 \times 10^{-23} \times (-0.182)$

= $-0.251 \times 10^{-23}$

or, = $-2.51 \times 10^{-24}$

Thus, we can conclude that the entropy change for a particle in the given system is $-2.51 \times 10^{-24}$ J/K particle.

8 0

3 years ago

Which geological feature is caused mainly by glacial erosion? O A. geyser O B. fault line O c. lava flow O D. U-shaped valley

Kamila [148]

Answer:

i think it is C

Explanation: hope this helps :)

6 0

2 years ago

Read 2 more answers

Please help! 50 points and Brainliest!

olga2289 [7]

Answer:

exothermic reaction

Explanation:

I think this because this is an example of an exothermic reaction is the chemical reaction between sodium and chlorine, which results in the formation of sodium chloride (also known as common salt)

8 0

2 years ago

Read 2 more answers

What is the h+ oh- and poh of solution with ph=3.67

Alexxx [7]

Hi I don’t know the answer is I don’t know but I hope someone helps u ph=3.67

7 0

2 years ago