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
jonny [76]
3 years ago
15

Which of the following best describes the difference between a scientific theory and a scientific law?

Chemistry
1 answer:
Kryger [21]3 years ago
5 0

Answer:

D im pretty sure cuz i prob had this test already

Explanation:

You might be interested in
HELP! Question 11.
xxMikexx [17]

Answer:

Warm front Forms when a moist, warm air mass slides up and over a cold air mass. As the warm air mass rises, it condenses into a broad area of clouds. A warm front brings gentle rain or light snow, followed by warmer, milder weather.

Your answer is B.

Enjoy.

6 0
3 years ago
What is ΔG° at 298 K for the following equilibrium? Ag+(aq) + 2NH3(aq) Ag(NH3)2+(aq); Kf = 1.7 × 107 at 298 K a. 41 kJ b. 0 c. –
jekas [21]

Answer:

ΔG° = 41.248 KJ/mol (298 K); the correct answer is a) 41 KJ

Explanation:

Ag+(aq)  +  2NH3(aq)  ↔ Ag(NH3)2+(aq)

⇒ Kf = 1.7 E7; T =298K  

⇒ ΔG° = - RT Ln Kf.....for aqueous solutions

∴ R = 8.314 J/mol.K

⇒ ΔG° = - ( 8.314 J/mol.K ) * ( 278 K ) ln ( 1.7 E7 )

⇒ ΔG° = 41248.41 J/mol * ( KJ / 1000J )

⇒ ΔG° = 41.248 KJ/mol

7 0
2 years ago
Read 2 more answers
Which chemicals are major contributors to ozone layer destruction? Select two answer choices.
gulaghasi [49]

Answer: <em>Chlorine and Bromine</em>

8 0
3 years ago
Read 2 more answers
Which is the correct net ionic equation for the following reaction: H3PO4 (aq) + 3 LiOH (aq) &gt; Li3PO4 (aq) + 3 H2O (l)?
torisob [31]

Answer: The correct option for the chemical equation H_3PO_4(aq.)+3LiOH(aq.)\rightarrow Li_3PO_4(aq.)+3H_2O(l) is 1.

The correct option for the chemical equation 2HBr(aq.)+Co(OH)_2(aq.)\rightarrow CoBr_2(aq.)+2H_2O(l) is 3.

Explanation:

  • For the chemical equation:

H_3PO_4(aq.)+3LiOH(aq.)\rightarrow Li_3PO_4(aq.)+3H_2O(l)

H_3PO_4 is a weak acid and hence will not dissociate into ions whereas LiOH is a strong base and will easily dissociate into ions.

The product Li_3PO_4 is soluble in water and hence, will dissociate into its respective ions. Hence, the ionic equation for this reaction is:

H_3PO_4(aq.)+3Li^{3+}(aq.)+3OH^-(aq.)\rightarrow 3Li^{3+}(aq.)+PO_4^{3-}(aq.)+3H_2O(l)

Net ionic equation becomes:

H_3PO_4(aq.)+3OH^-(aq.)\rightarrow PO_4^{3-}(aq.)+3H_2O(l)

So, the correct option is 1.

  • For the chemical equation:

2HBr(aq.)+Co(OH)_2(aq.)\rightarrow CoBr_2(aq.)+2H_2O(l)

HBr and Co(OH)_2 are strong acid and strong base respectively, hence they will easily dissociate into ions.

The product, CoBr_2 is is soluble in water and hence, will dissociate into its respective ions. Hence, the ionic equation for this reaction is:

2H^+(aq.)+2Br^-(aq.)+Co^{2+}(aq.)+2OH^-(aq.)\rightarrow Co^{2+}(aq.)+2Br^-(aq.)+H_2O(l)

The net ionic equation becomes:

H^+(aq.)+OH^-(aq.)\rightarrow H_2O(l)

So, the correct option is 3.

4 0
2 years ago
Read 2 more answers
Owls do most of their hunting during the night and they have specialized cells in their eyes that provide good night vision. The
KiRa [710]
C) They have a large number of rods and small number of cones.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Charged atoms that form molecules are held together by _______. charged atoms that form molecules are held together by _______.
    10·1 answer
  • Which describes the role of carbon dioxide in photosynthesis?
    9·2 answers
  • An ion has a charge of +1 and 15 protons how many electrons does it have?
    6·2 answers
  • An organism with 2 different alleles is called?
    7·2 answers
  • What does calibrating the cabbage pH indicator mean
    10·2 answers
  • How does the vapor pressure of water at 10 c compare with its vapor pressure at 50 c?
    11·1 answer
  • If an atom has 7 valence electrons, what will its charge be when it becomes an ion?
    9·1 answer
  • What type of wave is represented in the diagram?
    10·2 answers
  • WHaty are the Chemical properties of Oxygen?
    11·1 answer
  • An isotope with a half life of 10 min and a starting sample size of 100 g would have
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!