For animal cell-burst
for plant cell-turgid bt nt burst, protect by rigid cell wall
Fight against bacteria
Time, mass, temperature...
Stomach. Act as medium for pepsin to break down protein into polypeptide
Helium gas is lighter
As the atomic radius increases when going down Group 1, the melting and boiling point decreases.
BaCl2 +2 NaOH = 2NaCl + Ba(OH)2
For a better adaptation
2Mg + O2 = 2MgO
1 mol of O2 produces 2 mol of MgO ..
0.2 mol of O2 produces ? Mol of MgO ..
no of mole of MgO = 0.2/1 X 2
=0.4 mol
no of molecule of MgO = no of mole X NA
= 0.4 X 6.02 X 1023
=2.408 X 1023 molecules
