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
S_A_V [24]
3 years ago
14

Which of the following lists contains only elements?

Chemistry
1 answer:
Alexxandr [17]3 years ago
5 0
C. air, fire, water, earth. 4 elements
You might be interested in
Describe the range of the radii of most atoms
andriy [413]
The radii of most atoms are actually measured in the Ǻ, or Angstrom. We can do it in nanometers too, however. 
<span>First, we take the radius of the smallest atom, He (Helium). Atomic radius = .031 nm. The largest atom, stable atom is Fr (Francium), with atomic radius = .27 nm. </span>
<span>Therefore, the typical atomic radius is between .031 and .27 nm.</span>
8 0
3 years ago
True or False.There is a chemical difference between the gaseous and liquid state of the same substance.
Diano4ka-milaya [45]
I think the The answer is true
8 0
3 years ago
At 25 ∘C , the equilibrium partial pressures for the reaction were found to be PA=5.16 bar, PB=5.04 bar, PC=4.11 bar, and PD=4.8
erastova [34]

Answer: 5.85kJ/Kmol.

Explanation:

The balanced equilibrium reaction is

A(g)+2B(g)\rightleftharpoons 4C(g)+D(g)

The expression for equilibrium reaction will be,

K_p=\frac{[p_{D}]\times [p_{C}]}^4{[p_{B}]^2\times [p_{A}]}

Now put all the given values in this expression, we get the concentration of methane.

K_p=\frac{(4.85)\times [(4.11)^4}{(5.04)^2\times (5.16)}

K_p=10.6

Relation of standard change in Gibbs free energy and equilibrium constant is given by:

\Delta G^o=-2.303\times RT\times \log K_c

where,

R = universal gas constant = 8.314 J/K/mole

T = temperature = 25^0C=(25+273)K=298 K

K_c = equilibrium constant = 10.6

\Delta G^o=-2.303\times 8.314\times 298\times \log (10.6)

\Delta G^o=5850.23J/Kmol

\Delta G^o=5.85kJ/Kmol

Thus standard change in Gibbs free energy of this reaction is 5.85kJ/Kmol.

3 0
2 years ago
The elements in the periodic table are arranged in order of
Alenkinab [10]

Answer:

dsgadsagsdgsd

Explanation:

5 0
3 years ago
Which of the following are likely to form an ionic bond?
maria [59]

Answer:

B. Carbon and sulfur

Explanation:

8 0
2 years ago
Other questions:
  • Consider the equation: 4AI+30² → 2AI²O³ Is this equation balanced? Why or why not?
    15·1 answer
  • Jim collects a sample of beach sand during a class trip. After a close inspection of the sample he classifies it as a __________
    5·2 answers
  • What is the net ionic formula for copper carbonate
    14·1 answer
  • Earth's climate has been stable throughout its history. True False
    7·1 answer
  • Suggest a reason why the equilibrium between succinic acid and acetic anhydride lies on the side favoring formation of acetic ac
    14·1 answer
  • The final solution had a volume of 1.0L and a molarity of 0.925. How many moles of Nickel (II) chloride were present in the solu
    12·1 answer
  • We sprayed the flowers with water. They did not turn pink.
    10·1 answer
  • A ballon is filled with 30.0g of helium gas. What volume can be filled to a pressure of 1.15 atm if the temperature is 20.0°C?
    5·1 answer
  • Fill in the blanks to complete the following table. Symbol Ion formed Number of electrons in ion Number of protons in ion Cl ___
    13·1 answer
  • Magnesium reacts with oxygen gas to form magnesium oxide. Which of the following represents the balanced chemical equation?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!