1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
puteri [66]
3 years ago
15

PLEASE HELP I NEED THIS ANSWERED IN 10 MINS PLEASE

Chemistry
1 answer:
elena-14-01-66 [18.8K]3 years ago
4 0
We are given the equation to use which is:
ΔG = ΔH - TΔS

We are also given that:
ΔG = 173.3 kJ
T = 303 degrees kelvin
ΔH = 180.7 kJ

Substitute with these givens in the above equation to get ΔS as follows:
ΔG = ΔH - TΔS
173.3 = 180.7 - 303ΔS
303ΔS = 180.7 - 173.3 
303ΔS = 7.4
ΔS = 7.4 / 303 = 0.02442 kJ/K which is equivalent to 24.42 J/k

Based on the above calculations, the correct choice is:
D. 24.42 J/K
You might be interested in
The elements in Groups 1 and 2 get more reactive as you go down the group.
deff fn [24]

Answer:

Sodium and Magnesium

Explanation:

The elements in Groups 1 and 2 get more reactive as you go down the group.

This means that Sodium is more reactive than lithium and Magnesium is more reactive than beryllium.

On the periodic table, as you go down the group, the reactivity of an element increases. Especially with metals in group 1 and 2. Now Lithium is a metal of group 1, followed by Sodium, while Beryllium is a metal in group 2, followed by magnesium. That's how I picked the answers

4 0
3 years ago
A soluble iodide was dissolved in water. Then an excess of silver nitrate, AgNO3, was added to precipitate all of the io- dide i
Sergeeva-Olga [200]

Answer:

m_{I^-}=1.18gI^-

Explanation:

Hello,

In this case, the reaction is given as:

I^-+AgNO_3\rightarrow AgI+NO_3^-

Thus, starting by the yielded grams of silver iodide, we obtain:

n_{I^-}=2.185gAgI*\frac{1molAgI}{234.77gAgI}*\frac{1molI}{1molAgI}=9.31x10^{-3}molI^-

Which correspond to the iodide grams in the silver iodide. In such a way, by means of the law of the conservation of mass, it is known that the grams of each atom MUST remain constant before and after the chemical reaction whereas the moles do not, therefore, the mass of iodine from the silver iodide will equal the mass of iodine present in the soluble iodide, thereby:

m_{I^-}=9.31x10^{-3}molI^-\frac{127gI^-}{1molI^-} =1.18gI^-

And the rest, correspond to the iodide's metallic cation which is unknown. Such value has sense since it is lower than the initial mass of the soluble iodide which is 1.454g, so 0.272 grams correspond to the unknown cation.

Best regards.

7 0
4 years ago
When the free-energy change (AG) of a reaction is negative, the reaction is said to be: Endergonic Non spontaneous Spontaneous E
Greeley [361]

Answer:

Spontaneous

Explanation:

For a spontaneous reaction , the value for the change in free energy or gibbs' free energy is negative .

The change in free energy , i.e. , ΔG , denotes the maximum amount of usable energy released , as going from initial state , i.e. , the reactant towards the final state , i.e. , the product .

And , the sign of the  ΔG , determines whether the reaction is Spontaneous or non Spontaneous or at equilibrium ,

i.e. ,

if

ΔG < 0 , the reaction is Spontaneous

ΔG > 0 , the reaction is non Spontaneous

ΔG = 0 , the reaction is at equilibrium

For ,

ΔG < 0 , that the reaction proceed without any energy input , hence , it is  Spontaneous in nature .

6 0
3 years ago
Marie curie won two nobel prizes for her achievements in
Elina [12.6K]

Answer:

Explanation:

Together with her husband, she was awarded half of the Nobel Prize for Physics in 1903, for their study into the spontaneous radiation discovered by Becquerel, who was awarded the other half of the Prize. In 1911 she received a second Nobel Prize, this time in Chemistry, in recognition of her work in radioactivity.

8 0
3 years ago
Read 2 more answers
Organelle where energy is released from<br>broken-down food molecules​
Firlakuza [10]
The mitochondria releases ATP using the products of glycolysis.
6 0
4 years ago
Other questions:
  • Chlorine (CI) can be found as an ion with a 1- charge. How does this happen?
    11·2 answers
  • Your answer would be A
    6·1 answer
  • A buffer is 0.100 M in NH4Cl and 0.100 M NH3. When a small amount of hydrobromic acid is added to this buffer, which buffer comp
    15·1 answer
  • What is Absolute Zero?
    7·2 answers
  • Write a c++ program that prints the intial letter of any name​
    7·2 answers
  • There is 25.3 mL of the sulfuric acid solution; the sulfuric acid concentration is 2.30 M. Your base solution is 1.00 M. What is
    15·1 answer
  • 575 394 9550<br> bFzN0S<br> come study with me!
    13·2 answers
  • What are the twa parts of central nervous system ?​
    14·2 answers
  • 28. Describe the molecular geometry and hybridization of the N, P, or S atoms in each of the following compounds. (a) H3PO4, pho
    12·1 answer
  • 3. Humans discovered how to use fire and tools. How was this knowledge passed along to younger generations?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!