Bull sharks have the unique ability of keeping salt in their bodies even freshwater
Answer:
Explanation:
A 30.0g sample of O2 at standard temperature and pressure (STP) would occupy what volume in liters
PV =nRT
at STP P= 1atm. T= 273 K
n is the number of moles. O2 has a molar mass of 32.
30 gm of O2 is 30/32= 0.94 =n
PV = nRT
at STP: P= 1 atm, T=273 K, R is always 0.082 for P in atm and T in K
SO
1 X V = 0.94 X 0.082 X 273
using high school freshman algebra,
V= 0.94 X 0.082 X 273 = 21L
using high school algebra I,
V=
Answer:
Electronegativity difference between 2 atoms
Explanation:
1. If the electronegativity difference (usually called ΔEN) is less than 0.5, then the bond is nonpolar covalent.
2. If the ΔEN is between 0.5 and 1.6, the bond is considered polar covalent
3. If the ΔEN is greater than 2.0, then the bond is ionic.
Street: 1. Cars 2. People 3. Wind in the trees 4. Birds 5. Car horn
School: 1. School bell 2. Students laughing 3. Teacher talking 4. Footsteps 5. Lockers
Church: 1. Priest talking 2. People talking 3. Church music 4. Kids crying 5. Benches creaking
