The enthalpy change for the reaction 2K + S + K2S using the following thermochemical reactions is mathematically given as
dn=70.7kg
<h3>What is the enthalpy change for the reaction?</h3>
Generally, the equation for the Chemical reaction is mathematically given as
2k+s----->K2S
Therefore
KS+K----->K2S
Therefore
dn=dn1+dn2
dn=32.5+38.2
dn=70.7kg
In conclusion, the enthalpy change is
dn=70.7kg
Read more about Chemical reaction
brainly.com/question/16416932
#SPJ1
Answer:
B
Explanation:
The Agricultural Revolution gave Britain the most productive agriculture in Europe, with 19th-century yields as much as 80% higher than the Continental average. ... By the 19th century, marketing was nationwide and the vast majority of agricultural production was for the market rather than for the farmer and his family.
hope this helps :)
10,000J will raise the temperature of 1 liter of water by 2.38 °C
Using Q = mcΔT where Q = quantity of heat supplied = 10000 J,
m = mass of 1 liter of water = ρV where ρ = density of water = 1000 kg/m³ and V = volume of water = 1 liter = 1 dm³ = 1 × 10⁻³ m³.
So, m = ρV = 1000 kg/m³ × 1 × 10⁻³ m³ = 1 kg,
c = specific heat capacity of water = 4200 J/kg°C and ΔT = temperature change.
Making ΔT subject of the formula, we have
ΔT = Q/mc
Substituting the values of the variables into the equation, we have
ΔT = Q/mc
ΔT = 10000 J/(1 kg × 4200 J/kg°C)
ΔT = 10000 J/(4200 J/°C)
ΔT = 2.38 °C
So, 10,000J will raise the temperature of 1 liter of water by 2.38 °C
Learn more about temperature change here:
brainly.com/question/16384350
Answer:
The coldest temperature possible
Explanation:
Absolute zero = 0 K
A. is wrong. 0 °C = 273 K
B. is wrong. -210 °C = 63 K
C. is wrong. 32 °F = 273 K
E. is wrong. -196°C = 77 K