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
matrenka [14]
2 years ago
15

If the earth was a guava fruit, the space where the seeds are would be the core/mantle​

Chemistry
2 answers:
Bezzdna [24]2 years ago
8 0
Good analysis lol ...
Andrews [41]2 years ago
4 0
Right on ! I need to answer a question to get mine answered so here I am :)
You might be interested in
The limiting reactant is the chemical substance that determines the amount of product(s) that can ultimately be formed in a reac
Mariulka [41]

Explanation:

Al=10,o2=5

(Al10)2(o5)3

The answer is oxygen.

6 0
3 years ago
Is a CAS number a physical or chemical property
katrin [286]
Chemical


Hope that helps
5 0
2 years ago
Scientists have developed the Atomic Theory over a period of hundreds of years. What will help us further the development? A. in
stepladder [879]

Answer:

A. increasing the ability of technology, like microscopes, to see even smaller particles

8 0
3 years ago
. Determine the standard free energy change, ɔ(G p for the formation of S2−(aq) given that the ɔ(G p for Ag+(aq) and Ag2S(s) are
olga nikolaevna [1]

<u>Answer:</u> The standard free energy change of formation of S^{2-}(aq.) is 92.094 kJ/mol

<u>Explanation:</u>

We are given:

K_{sp}\text{ of }Ag_2S=8\times 10^{-51}

Relation between standard Gibbs free energy and equilibrium constant follows:

\Delta G^o=-RT\ln K

where,

\Delta G^o = standard Gibbs free energy = ?

R = Gas constant = 8.314J/K mol

T = temperature = 25^oC=[273+25]K=298K

K = equilibrium constant or solubility product = 8\times 10^{-51}

Putting values in above equation, we get:

\Delta G^o=-(8.314J/K.mol)\times 298K\times \ln (8\times 10^{-51})\\\\\Delta G^o=285793.9J/mol=285.794kJ

For the given chemical equation:

Ag_2S(s)\rightleftharpoons 2Ag^+(aq.)+S^{2-}(aq.)

The equation used to calculate Gibbs free change is of a reaction is:  

\Delta G^o_{rxn}=\sum [n\times \Delta G^o_f_{(product)}]-\sum [n\times \Delta G^o_f_{(reactant)}]

The equation for the Gibbs free energy change of the above reaction is:

\Delta G^o_{rxn}=[(2\times \Delta G^o_f_{(Ag^+(aq.))})+(1\times \Delta G^o_f_{(S^{2-}(aq.))})]-[(1\times \Delta G^o_f_{(Ag_2S(s))})]

We are given:

\Delta G^o_f_{(Ag_2S(s))}=-39.5kJ/mol\\\Delta G^o_f_{(Ag^+(aq.))}=77.1kJ/mol\\\Delta G^o=285.794kJ

Putting values in above equation, we get:

285.794=[(2\times 77.1)+(1\times \Delta G^o_f_{(S^{2-}(aq.))})]-[(1\times (-39.5))]\\\\\Delta G^o_f_{(S^{2-}(aq.))=92.094J/mol

Hence, the standard free energy change of formation of S^{2-}(aq.) is 92.094 kJ/mol

8 0
3 years ago
Potassium -39 has how many neutrons
enyata [817]
Potassium has 20 neutrons

Hope this helps
5 0
3 years ago
Other questions:
  • Which type of energy is associated with the random motions or atoms and molecules in a sample of air
    5·1 answer
  • What can the bromine be classified as
    10·1 answer
  • Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?
    15·2 answers
  • Describe the procedure Bourouiba uses to study sneezes.
    14·1 answer
  • Which of the following statements correctly describes the substance with the formula ki?
    7·2 answers
  • Nitric oxide (NO) reacts with oxygen gas to produce nitrogen dioxide. A gaseous mixture contains 0.66 g of nitric oxide and 0.58
    10·1 answer
  • Which correctly lists three characteristics that are used to describe air?
    13·2 answers
  • Chemical reactions happen when _____. a.atoms attract or repel one another b.heat is created by friction c. two or more substanc
    13·1 answer
  • The shape of the illuminated portion of the Moon as seen by an observer, usually on Earth:
    13·1 answer
  • Street lights are yellow/orange in color and not white. Based on your flame test data, what gaseous element is present in street
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!