Answer:
An alloy is a mixture of chemical elements, which form an impure substance that retains the characteristics of a metal.
Explanation:
Have a nice day. Auf Wiedersehen.
Answer:
Atomic mass of Gallium is 69.7230 amu
Explanation:
100 atoms of gallium contains 60.11 number of atoms and 39.89 number of atoms.
Therefore atomic mass of gallium is given by-
=
= 69.7230 amu
The molar mass or As is 74.9g. Start with 281g multiply by (1mol/74.9g) = 3.75 mols
Put what you don’t want on the bottom (in this case grams) so they the u it’s cancel (if you multiply by grams and the divide by grams they cancel. Ultimately leave what you want on the top ( This case mols) then do the math
Space, time, imagination, and money
In this situation, we can use the ideal gas equation which is PV = nRT
P = Pressure (atm)
V = Volume (L)
n = moles (mol)
R = constant (0.08206 atm-l/mol-K)
T = Temperature (K) ---> C + 273.15 = K
PV = nRT
n = PV/RT
= (7atm)(15L) / (0.08206 atm-l/mol-K)(23 + 273.15)
= 4.32 mol
Hope that helped!!!