Cr2(CO3)3 is Chromium (III) Carbonate or Chromic Carbonate.
It is composed of Chromium, Carbon, and Oxygen. Chromium has 2 atoms, Carbon has 3 atoms, and Oxygen has 9 atoms.
This compound is composed of 36.6% Chromium, 12.7% Carbon, and 50.7% Oxygen.
Answer : The correct expression for equilibrium constant will be:
Explanation :
Equilibrium constant : It is defined as the equilibrium constant. It is defined as the ratio of concentration of products to the concentration of reactants.
The equilibrium expression for the reaction is determined by multiplying the concentrations of products and divided by the concentrations of the reactants and each concentration is raised to the power that is equal to the coefficient in the balanced reaction.
As we know that the concentrations of pure solids and liquids are constant that is they do not change. Thus, they are not included in the equilibrium expression.
The given equilibrium reaction is,
The expression of will be,
Therefore, the correct expression for equilibrium constant will be,
Mole to Mole.
Assuming you're referring to converting in general, there must always be a mole to mole conversion.
Gram to gram would be incorrect as you must have a molar conversion in order to do so.
Gram to mole would be incorrect because that would leave out molecular conversions which would require three steps rather than two.
Mole to molecule is incorrect as it leaves out grams, depending on the circumstances and equation provided.
Thus, through process of elimination, mole to mole is the correct answer.
Hope this helps!
Answer:
By using the techniques of archeology.
Explanation:
Students recover an individual's remains from a surface grave by using the techniques of archeology field to scrape away the layers of soil from that remains in a way that the remains can't be damaged. If they find the remains within 10 centimeters of digging, they can dig down further in order to dig out all the remains safely. The instruments of archeology field are used because they are light and can be used to dig out fossils of ancient organisms.
Answer:
All noble gases.
Helium (He), neon (Ne) , argon (Ar) , krypton (Kr ), xenon (Xe), radon (Rn)
Explanation:
All noble gases have complete outer shells.These are six elements Helium (He), neon (Ne) , argon (Ar) , krypton (Kr ), xenon (Xe), radon (Rn). These all are non reactive and stable.
Electronic configuration of Helium.
He₂ = 1s²
Electronic configuration of neon.
Ne₁₀ = [He] 2s² 2p⁶
Electronic configuration of argon.
Ar₁₈ = [Ne] 3s² 3p⁶
Electronic configuration of krypton.
Kr₃₆ = [Ar] 3d¹⁰ 4s² 4p⁶
Electronic configuration of xenon.
Xe₅₄ = [Kr] 4d¹⁰ 5s² 5p⁶
Electronic configuration of radon.
Rn₈₆ = [Xe] 4f¹⁴ 5d¹⁰ 6s² 6p⁶
we can see in case of all element the outer shell is complete.