Answer:
Explanation:
a) The forward reaction is exothermic, hence when temperature is increased the equilibrium shift towards the reactants side to get rid of the excess energy. This will mean that more reactants are produced decreasing yield
b) There are a fewer number of moles of gas on the right side compared to the left side (Just count the coefficients before each compound) so a higher pressure will mean that the equilibrium will shift towards the products side in order to decrease the pressure. This will mean that more products are formed increasing yield
c) When something is powdered it's surface area to volume ratio increases. A higher surface area means that the particles around it have more area to work on so the frequency of collisions will increase increasing the rate of reaction. This is why iron is powdered.
Energy were released from the walnut, q = 1,673.6 J
<h3>Equation :</h3>
To find the energy using formula,
q = mcΔt
where,
q is charge
m is mass
c is specific heat of water
Δt is change in temperature
So, given
t₁ = 50°C
t₂ = 60°C
m = 40g
c = 4.184 J/g
Now putting the values known,
We get,
q = mc(t₂ - t₁)
q = 40g x 4.184 J/g x (60 - 50)
q = 167.36 J x 10
q = 1,673.6 J
<h3>What is heat energy?</h3>
Heat is the thermal energy that is transferred when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.
To know more about specific heat :
brainly.com/question/11297584
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According to the decomposition of XY is second order, and we assume that the rate constant (K) = 6.92 X 10^-3 M^-1 :
So according to this formula:
Kt= 1/[XY]t - 1/[XY]o
when [XY]o is the initial concentration = 0.1 m & [XY]t is the concentration after passing a period of time= 0.1 x 0.125 = 0.0125 m
and when K= 6.92X10^-3 M^-1
By substitution:
t = (1/[XY]t - 1/[XY]o) / K
=(1/0.0125 - 1/0.1) / 6.92X10^-3
∴t = 1011 S = 17 min
Answer:
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Explanation:
ans: Gas
The particles of matter in the gaseous state are neither close together nor fixed in place. The gas expands to fill its container. Thus, a given number of particles will have the greatest volume in the gas state.30/06/2014
The equilibrium concentration of N₂ : 1.992
<h3>Further explanation</h3>
Given
Kc = 6.0 x 10⁻² at 500°C
0.253 M H₂ and 0.044 M NH₃
Reaction
3H₂(g) + N₂(g) = 2NH₃(g)
Required
The equilibrium concentration of N₂
Solution
Kc for the reaction :
![\tt Kc=\dfrac{[NH_3]^2}{[H_2]^3[N_2]}\\\\0.06=\dfrac{0.044^2}{0.253^3\times [N_2]}\\\\(N_2]=1.992](https://tex.z-dn.net/?f=%5Ctt%20Kc%3D%5Cdfrac%7B%5BNH_3%5D%5E2%7D%7B%5BH_2%5D%5E3%5BN_2%5D%7D%5C%5C%5C%5C0.06%3D%5Cdfrac%7B0.044%5E2%7D%7B0.253%5E3%5Ctimes%20%5BN_2%5D%7D%5C%5C%5C%5C%28N_2%5D%3D1.992)
