To shorten it, i would say that Kinetic energy is determined by the speed and mass of an object
<em>Answer:</em>
Symbol = I
<em>Explanation:</em>
<em>Isotopes</em> are those substances which have same atomic number (Numbers of protons) and different masses (Number of proton + numbers of neutrons).
- Iodine also have many isotopes like
<em>Iodine-125</em> that contain 53 protons, 72 neutrons.
<em>Iodine-128</em> that contain 53 protons, 75 neutrons.
<em>Iodine-129 </em> that contain 53 protons, 76 neutrons.
<em>Iodine-131</em> that contain 53 protons, 78 neutrons.
<em>Summary:</em>
- Here the Iodine-131 is correct answer of this question.
molecular weight of toluene = 92 g/mol
C6 = 12 x 6 = 72
H5 = 1 x 5 =5
CH3 = 12 + 1 x 3 =15
molecular weight of benzene = 78 g/mol
C6 = 12 x 6 = 72
H6 = 1 x 6 = 6
moles toluene:
115.8 / (92 g/mol) = 1.25 mol
moles benzene:
45.2/ (78 g/mol) = 0.57mol
total moles: 1.25 + 0.57= 1.82 moles
mole fraction of toluene:
1.25 mol / 1.82 moles = 0.68
There are three subatomic particles known: (1) electron which is found outside the nucleus of an atom and (2 and 3) protons and neutrons which are both inside the nucleus. As they are outside the nucleus, it is easier to transport electron than any other subatomic particle. Thus, atom and its ion differ in the number of electrons.
