Answer:
= - 26.31 kJ
Explanation:
we know that number of moles is calculated as
= 0.00476 mol
Heat absorbed by calorimeter
= 26.87 kJ
Enthalpy of combustion
= - 55290.12 kJ/mol
Negative sign shows that the heat is released
The balanced reaction
ΔHc = ΔU + Δng (RT)
-55290.12 = ΔU + (12 - 12) *(RT)
= - 26.31 kJ
Answer:
Neither "matter" nor "energy" can be created or destroyed, but they can be changed from one form to the other.
Explanation:
Soil texture<span> is a </span>classification<span> instrument used both in the field and laboratory to determine soil classes based on their physical texture. Soil texture can be determined using qualitative methods such as texture by feel, and quantitative methods such as the hydrometer method.
For</span> soil sample contains 20 percent sand, 10 percent clay, and 70 percent silt we have silty loam <span>present in the sample.</span>
Kinetic energy is given by 1/2 MV²
k.e = 1/2 mv²
1.9 × 10^3 = 1/2m(v/2)²
1.9 ×10^3 = 1/8 mv²
1.9 × 10^3 = 1/4(1/2mv²)
= (1.9 × 10^3)/ 4
= 4.75 × 10^2 joules
The new kinetic energy will therefore be 4.7 × 10^2 joules.
A perfect black body can’t be realized