The amount of atomic particles released by a radioactive material in a specific time is determined by the strong and the weak nuclear force. It is these forces that holds the nucleus of the atom and the force that needs to be overcome with to allow radioactive decay.
They really have distinctive forecasts now and again. For example, valence bond hypothesis predicts no unpaired electrons in sub-atomic oxygen, while sub-atomic orbital hypothesis predicts two unpaired electrons in the 2 π ∗ orbitals.
The Molecular orbital hypothesis can be checked for this situation since sub-atomic oxygen is paramagnetic. VB hypothesis is sensibly great at giving subjective data about the states of particles, yet MO hypothesis gives more data about vitality levels, bond qualities, and so on.
The above question is incomplete, here is the complete question:
Calculate the standard molar enthalpy of formation of NO(g) from the following data at 298 K:
Answer:
The standard molar enthalpy of formation of NO is 90.25 kJ/mol.
Explanation:
To calculate the standard molar enthalpy of formation
...[3]
Using Hess’s law of constant heat summation states that the amount of heat absorbed or evolved in a given chemical equation remains the same whether the process occurs in one step or several steps.
[1] - [2] = [3]
According to reaction [3], 1 mole of nitrogen gas and 1 mole of oxygen gas gives 2 mole of nitrogen monoxide, So, the standard molar enthalpy of formation of 1 mole of NO gas :
=
Answer: see the last column in the final table of the explanation below.
Explanation:
1) Arrange the data to understand the question:
<span>Acid Molarity Moles of H⁺ released per liter
HCl 1 ____
H2SO4 1 ____
H3PO4 1 ____
H2SO4 0.5 ____
H3PO4 3 ____
HNO3 2 ____
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2) All the given acids are strong acids, so you can consider they dissociate completely and release all the hydrogens present in the chemical formula.
3) The molarity formula is M = n/V, where n is the number of moles of solute and V is the volume of the solution in liters
From that, n = M×V
Go one by one with that formula.
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Acid Molarity Moles of solute number of H in Moles <span><span>H⁺ </span> per liter the chemical formula per liter
HCl 1 1M×1L = 1 1 1×1 = 1
H₂SO4₄ 1 1M×1L = 1 2 2×1 = 2
H₃PO₄ 1 1M×1L = 1 3 3×1 = 3
H₂SO₄ 0.5 0.5M×1L = 0.5 2 2×0.5 = 1
H₃PO₄ 3 3M×1L = 3 3 3×3 = 9
HNO₃ 2 2M×1L = 2 2 2×2 = 4
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I would say that there is 270 grams left. since its F2 you have three things there.
divide 405 by 3
you will get 135.
but there are 2 F's so multiply that by 2 and you will get 270.
the final answer should be 270 grams left.