Answer:
Δp = 3.31 × 10⁻²⁴ kg.m/s
Explanation:
Given:
Electron is confined to a space of, Δx = 10⁻¹⁰ m
According to the Heisenberg uncertainty principle, we have
where, h is the plank's constant = 6.626 × 10⁻³⁴ J.s
Δp is the uncertainty in the momentum
on substituting the respective values, we get
or
Δp = 3.31 × 10⁻²⁴ kg.m/s
The reaction is:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O; ΔH = 1410 kJ
When we reverse this reaction, the sign of the enthalpy change, ΔH, will be changed. The enthalpy change for the reversed reaction would be 1,410 kJ.
Next, we must also multiply the reaction by 2, so the final enthalpy change for the reverse reaction will be:
ΔH = 2,820 kJ
Each period in the periodic table corresponds to a principal energy level
<span>Ideal gas is used to explain the behavior of a gas sample. In ideal gas law, the equation is PV=nRT where R has a constant of 0.0821L.atm/mol.K. It can explain the behaviior of a gas in three types: mole, mass and density. The ideal gas often observed in a high temperature with low pressure as to potential energy becomes less significant compared to the kinetic energy.</span>
Density is mass over volume. If you put it into a formula it would look like this:
Based on the problem given, you can see that the mass of the aluminum block is 82.0 g and the volume is 12.8 cm3. Just put that into your equation and solve for it:
The answer is then letter C.