Answer:
Increase blood flow to the hands and feet
Explanation:
Answer:
4)Particle Arrangement
Explanation:
When solid carbon dioxide CO₂ will evaporate in gaseous carbon dioxide CO₂ the particles arrangement will change from ordered in solid state to completely disordered in gaseous state.
Bond type, gram formula mass and molecular polarity are not changed in the described physical transformation.
Beryllium Oxide has a molecular formula Be-O
% covalent character in Be-O = 100 - % ionic character in Be-O
Now,
% ionic character = {1 - exp[(-0.25)(E(Be)-E(O))²]}*100
where,
E(Be) and E(O) are the electronegativity values of Be and O
Based on the Paulings scale:-
E(Be) = 1.57
E(O) = 3.44
% ionic = {1 - exp[(-0.25)(1.57-3.44)²]}*100 = 58.28%
Therefore, % covalent = 100 -58.28 = 41.72%
Ans: b) 41 percent
Answer:
10.418*10²³
Explanation:
1) 6.022*10²³ moleculas in 1 mole PCl₅ (Avogadro's number);
2) in 1.73 moles: 6.022*10²³*1.73=10.418*10²³