Answer:
The molar concentration of radon is 4.38 x 10⁻⁶ mol.L⁻¹
Explanation:
Molar fraction = number of moles of a certain component / total number of moles
Partial pressure = Total pressure x molar fraction
Partial pressure = 34 atm x 3.2 x 10⁻⁶
Partial pressure = 1.09 x 10⁻⁴ atm
Considering radon as an ideal gas, PV = nRT
molar concentration = n/V
n/V = P/RT
n/V = 1.09 x 10⁻⁴ atm / 0.082 L.atm.mol⁻¹K⁻¹ x 303.15K
n/V = 4.38 x 10⁻⁶ mol.L⁻¹
Answer:
1.19mole
Explanation:
Given parameters:
Mass of potassium hydroxide , KOH = 66.48g
Unknown:
Number of moles of KOH = ?
Solution:
To solve this problem, we need to use the expression below;
Number of moles =
Molar mass of KOH = 39 + 16 + 1 = 56g/mol
Number of moles = = 1.19mole
<u>Answer:</u>
They follow Einstein's equation, which allows for the conversion of mass to energy is true about nuclear reaction.
<u>Explanation:</u>
The nuclear reactions happen according the Einstein’s equation, i.e., when the mass deficit between the weight of the nucleus as a whole and the individual constituent components occurs, this deficit is converted to energy that is released and used for nuclear reactions.
No mass can never be made or destroyed. So is energy. Energy too has to remain constant; there can be a change in the form, energy can be converted into mass or vice versa but the constancy has to be maintained.
Letter B is the most plausible answer :)