Answer:
Element name: Krypton
Symbol: Kr
Mass Number: 79 AMU
Charge: 0, electrons and protons cancel out.
ion: none, it is a halogen.
Explanation:
Krypton is the 36th element on the periodic table and has 36 protons. The mass is protons plus nuetrons so 36 + 43 is 79 AMU or Atomic Mass Units.
Answer:
The approximate density of a high-leaded brass is δ = 8,40 g/mL
Explanation:
Lead brasses are used for their high machinability and atmospheric corrosion resistance. To obtain the density of this solid solution you need to do the weighted average, thus:
δ =
<em>δ = 8,40 g/mL</em>
<em></em>
I hope it helps!
The volume of a gas can be found by using ideal gas formula. The formula would be:
V= nRT/P
where
n= number of the molecule (mol)
R= constant
T= temperature
P= pressure
Then, the answer would be
<span>1. temperature
2. pressure
3. mass
4. number of molecules </span>
Answer:
4. c) Lose only 3 electrons
5. d) Nitrogen.
Your answers are correct
The binding energy is calculated from the product of the mass defect and the square of the speed of light. First, we need to calculate for the mass defect. We do as follows:
m = mass products - mass of reactantsm = 33*1.00867 + 27*1.00728 - 59.9338 m = 0.54887
E = mc^2 = 0.54887 (3x10^8)^2 = 4.94x10^16 J