Answer:
The reaction is not in equilibrium and moves to the left until Q equals Kc.
Explanation:
Hello!
First we must check that the equation is balanced.
We propose the constant Kc for the balanced equation.
We propose Q for the balanced equation.
We calculate the value of Q and compare with Kc
If Q = Kc the reaction is in equilibrium.
If Q> Kc the reaction moves from right to left.
If Q <Kc the reaction shifts from left to right.
We obtain the value of Kc from the value of Kp. If the variation of mol is zero Kp = Kc
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The answer would be
A. It is mostly composed of Deciduous trees.
First we need to find the number of moles of hydrogen gas formed
Zn + 2HCl ---> ZnCl₂ + H₂
stoichiometry of Zn to H₂ is 1:1
the number of Zn moles reacted - 2.4 g / 65.4 g/mol = 0.0367 mol
assuming Zn to be the limiting reactant
number of Zn moles reacted = number of H₂ moles formed
therefore number of H₂ moles formed = 0.0367 mol
we can use ideal gas law equation to find the pressure
PV = nRT
P - pressure
V - Volume - 450 x 10⁻⁶ m³
n - number of moles - 0.0367 mol
R - universal gas constant - 8.314 Jmol⁻¹K⁻¹
T - temperature - 32 °C + 273 = 305 K
substituting these values in the equation
P x 450 x 10⁻⁶ m³ = 0.0367 mol x 8.314 Jmol⁻¹K⁻¹ x 305 K
P = 206.8 kPa
pressure is 206.8 kPa
Explanation:
The density of a substance can be found by using the formula
From the question
mass = 14.7 g
volume = 2.2 cm³
The density is
We have the final answer as
<h2>6.68 g/cm³</h2>
Hope this helps you