The equilibrium constant, Kc, can be determined knowing that the balanced chemical reaction is N2 + 3H2 = 2 NH3. At equilibrium, Kc is equal to (concentration of NH3)^2 / [(concentration of N2) x (concentration of H2)^3]. Using the given values, Kc is computed to be equal to 1.9977 x 10^-4.
Answer:
18.91 ml
Explanation:
Initial volume of base=2.04 ml
Final volume of base = 20.95 ml
Volume of base used= 20.95 - 2.04 = 18.91 ml
Note that the volume of base used is obtained as the difference between the final and initial volume of base, hence the answer given above.
Answer: Number of atoms in
of radon gas (radon atoms) at the same temperature and pressure is 
Explanation:
According to avogadro's law, volume of a gas is directly proportional to the number of moles present when temperature and pressure is constant.:


= moles of hydrogen gas = 

= moles of radon gas = ?


Thus the number of atoms in
of radon gas (radon atoms) at the same temperature and pressure is 
Answer:
3Cu²⁺ + 2PO₄³⁻ → Cu₃(PO₄)₂ (s)
Explanation:
Double displacement reaction: A chemical reaction in which aqueous solution of two salts react to give two products by exchanging their counterions.
<u>The chemical equation for the chemical reaction between Na₃PO₄ (aq) and CuSO₄ (aq) is given as:</u>
2 Na₃PO₄ (aq) + 3 CuSO₄ (aq) → Cu₃(PO₄)₂ (s) + 3 Na₂SO₄ (aq)
<u>The full ionic equation for this chemical reaction is:</u>
6Na⁺(aq) + 2PO₄³⁻(aq) + 3Cu²⁺(aq) + 3SO₄²⁻(aq) → Cu₃(PO₄)₂ (s) + 6Na⁺(aq) + 3SO₄²⁻(aq)
<u>Therefore, the net ionic equation for this chemical reaction is:</u>
3Cu²⁺ + 2PO₄³⁻ → Cu₃(PO₄)₂ (s)
Let's
assume that the gas in the balloon is an ideal gas.
We can use
combined gas law,
PV/T =
k (constant)
Where, P is
the pressure of the gas, V is volume of the gas and T is the temperature of the
gas in Kelvin.
For two
situations, we can use that as,
P₁V₁/T₁= P₂V₂/T₂
P₁
= 2.95 atm
V₁
= 7.456 L
T₁ = 379 K
P₂ = ?
V₂
= 4.782 L
T₂ = 212 K
By applying
the formula,
2.95 atm x 7.456 L / 379 K = P₂ x 4.782 L / 212 K
P₂
= (2.95 atm x 7.456 L x 212 K) / (379 K x 4.782 L)
P₂
= 2.57 atm
Hence, the answer is 2.57 atm.