Chemistry
Chemistry, 01.11.2019 01:31, roxymiller3942

10 points what is the mass number most similar to?


10 points what is the mass number most similar to?

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Предмет
Physics, 28.06.2019 04:10, mhill32
3. drude model (14 points) (a) calculate the number density of valence electrons in lithium, given that the mass density is 530 kg=m3, the molar mass is 7 g=mol, and that lithium is monovalent (i.e., each atom has one valence electron). (6 points) i used n = n_{a}\left ( z_{v}\rho _{m}/m_{a}\right ) and got a value of 4.56 x 1028 m-3 (b) assuming that the mean free path of the electrons is 1 nm, calculate the conductivity and the mobility of lithium at 295 k. (8 points) i know i need to use: l = v_{o}\tau and v_{o} = \sqrt{3k_{b}t/m} the values for kb, tau and t are given. what value of m is used? answer key says that vo = 1.16 x 105 m/s that's where i got stuck you may need the following constants: avogadro's number: na = 6.022 x 1023 boltzmann constant: kb = 1.38066 x 10-23 j/k electron mass: m = 9.10953
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Physics, 12.07.2019 11:00, liyahheadhigh
21 points if you answer! identify the atomic number and atomic mass of the following element question 3 options: number: 18 mass: 17 number: 17 mass: 35.453 number: 17 mass: 18 number: 35.453 mass: 17
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Chemistry, 30.09.2019 01:00, mimivenga
30 points! . if aluminum has an atomic number of 13 and an atomic mass of 26.98 and oxygen has an atomic number of 8 and an atomic mass of 16.00, then what is the mass of one mole of al2o3? enter the answer rounded to two decimal points.
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