Answer:
0.7 %
Explanation:
In a star like the Sun, or of smaller mass, the most frequent chain of nuclear reactions constitutes the cycle called p-p (proton-proton). This cycle begins with the fusion of two hydrogen nuclei (two protons) into one of deuterium, with the emission of a positron (the positron is the antiparticle of the electron, it is a positive electron) and a neutrino.
In this reaction 0.7% of the mass of the protons of the initial state is converted into energy. This number, 0.7%, is huge compared to that of a chemical reaction (a combustion, for example), which is typically of the order of 0.000000001%. Deuterium can in turn be fused with another hydrogen, this with helium.
From an energy point of view, what happens as a result of all these reactions is that four hydrogen nuclei fuse together, producing one of helium, two positrons, 2 neutrinos and 24.68 MeV of kinetic energy.
Answer:
ΔG° = -533.64 kJ
Explanation:
Let's consider the following reaction.
Hg₂Cl₂(s) ⇄ Hg₂²⁺(aq) + 2 Cl⁻(aq)
The standard Gibbs free energy (ΔG°) can be calculated using the following expression:
ΔG° = ∑np × ΔG°f(products) - ∑nr × ΔG°f(reactants)
where,
ni are the moles of reactants and products
ΔG°f(i) are the standard Gibbs free energies of formation of reactants and products
ΔG° = 1 mol × ΔG°f(Hg₂²⁺) + 2 mol × ΔG°f(Cl⁻) - 1 mol × ΔG°f(Hg₂Cl₂)
ΔG° = 1 mol × 148.85 kJ/mol + 2 mol × (-182.43 kJ/mol) - 1 mol × (-317.63 kJ/mol)
ΔG° = -533.64 kJ
1.) Constructive interference is observed when two waves having same phase are interfered.
2.) The resultant amplitude of the 2 waves is equal to sum of the amplitude of individual wave.
3.) The amplitude of resultant wave is maximum than individual wave.
Hope this helps you.
The volume of the substance is 61.4 litres.
Explanation:
Specific density is the ratio of density of a substance at a given temperature with the density of reference substance.
Data given:
mass = 750 grams
specific gravity = 12.2
volume=?
The formula to be used:
Specific gravity =
suppose the other substance is water so its density is 1g/ml at 4 degrees
Putting the values to the equation:
density of the object = 1 x12.2
density of the substance = 12.2
Now using the formula:
density =
putting the values in the equation:
volume =
= 61.4ml is the volume of the substance.
The leading edges of both plates are bent downward <span>does NOT occur at a subduction zone.</span>