Answer: lesson 11 practice
1. Not part-time contain subatomic particles
2. Nucleus in atom-Rutherford
3. Bee hovering around give
4. Mass
5. Atomic mass unit
6. 5
7. Li2O
8. Strong attractions between polar water molecules
Explanation:
The electron configuration 1s22s22p6323p2
is the element Silicon.
Answer:
7.01 mol CH4
Explanation:
STP means standard temperature and pressure, so they are basically telling you that the gas is at 1 atm and 273 K (0 degrees celsius). Now that we have the pressure, volume, and temperature we can use the ideal gas law and solve for n or moles
PV=nRT
n=PV/RT
n=(1)(157)/(0.08206)(273)
n=7.0081 (round to 3 sigfigs)
n=7.01 mol
2.5 x 10^24 molecules of C4H10
