We are going to use Avogadro's constant to calculate how many molecules of
carbons dioxide exist in lungs:
when 1 mole of CO2 has 6.02 x 10^23 molecules, so how many molecules in
CO2 when the number of moles is 5 x 10^-2
number of molecules = moles of CO2 * Avogadro's number
= 5 x 10^-2 * 6.02 x 10^23
= 3 x 10^22 molecules
∴ There are 3 x 10^22 molecules in CO2 exist in lungs
Answer:
Hope this helps you!
Explanation:
Include big outside heaters and inside heaters to maintain warm
Also wear special clothes to keep body warmth
Answer:
from 10-14
Explanation:
the pH of potassium hydroxide is extremely high and is a strong base although the exact value depends on the concentration of the base in water.
Answer:
<em><u>For </u></em><em><u>balancing</u></em><em><u> </u></em><em><u>this </u></em><em><u>equation</u></em><em><u> </u></em>
<em><u>we </u></em><em><u>need </u></em><em><u>to </u></em><em><u> </u></em><em><u>put</u></em>
<em><u>Ag2O</u></em><em><u>. </u></em><em><u>=</u></em><em><u> </u></em><em><u> </u></em><em><u>2</u></em><em><u> </u></em>
<em><u>Ag </u></em><em><u>=</u></em><em><u> </u></em><em><u>4</u></em><em><u> </u></em>
<em><u>O2 </u></em><em><u>=</u></em><em><u> </u></em><em><u>1</u></em><em><u> </u></em>
<em><u>Hope</u></em><em><u> it</u></em><em><u> will</u></em><em><u> </u></em><em><u>help</u></em>
Answer:
A. Dipole-dipole forces; B. dipole-dipole forces;
C. ion-dipole forces; D. ion-dipole forces
Explanation:
A. HF
HF is a weak acid but a highly polar molecule. The strongest intermolecular force with water is an especially strong dipole-dipole force (hydrogen bonding) of the type
H-F· · ·H-OH and H₂O· · ·H-F
B. CH₃OH
CH₃OH has a highly polar O-H bond. The strongest intermolecular force with water is the especially strong dipole-dipole force (hydrogen bonding):
CH₃(H)O· · ·H-OH and CH₃O-H· · ·OH₂
C. CaCl₂
CaCl₂(s) ⟶Ca²⁺(aq) + 2Cl⁻(aq)
CaCl₂ separates into hydrated ions in solution. The strongest intermolecular force with water is ion-dipole attraction.
Ca²⁺· · ·OH₂ and Cl⁻· · ·H-OH
D. FeBr₃
FeBr₃(s) ⟶Fe³⁺(aq) + 3Br⁻(aq)
FeBr₃ separates into hydrated ions in solution. The strongest intermolecular force with water is ion-dipole attraction.
Fe³⁺· · ·OH₂ and Br⁻· · ·H-OH
