The moles of chromium (iii) nitrate produced is calculated as follows
write the equation for reaction
3 Pb(NO3)2 + 2 Cr = 2 Cr(NO3)3 + 3 Pb
by use of mole ratio between Pb(NO3)2 to Cr(NO3)3 which is 3 : 2 the moles of Cr(NO3)3 is therefore
= 0.85 x2 /3 = 0.57 moles
b. F₂ have a polar covalent bond
Explanation:
The type of bond depends on the difference of the electronegativity of the two elements.
if the electronegativity difference is under 0.4 the bond is non-polar covalent
if the electronegativity difference is between 0.4 and 1.7 the bond is polar covalent
if the electronegativity difference is greater 1.7 the bond is ionic
a. HCl
electronegativity of Cl - electronegativity of H = 3 - 2.2 = 0.8, so the bond is polar covalent
b. F₂
electronegativity of F - electronegativity of F = 4 - 4 = 0 , so the bond is non-polar covalent
c. HF
electronegativity of F - electronegativity of H = 4 - 2.2 = 1.8, in this case because non-metals are involved in the bond we consider this to be a polar covalent bond.
d. ClF
electronegativity of F - electronegativity of Cl = 4 - 3 = 1, so the bond is polar covalent
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type of chemical bonds
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Answer:
angle
Explanation:
let us see the sun moves an a angle
Answer:
Heat is converted completely into work during isothermal expansion
Explanation:
first law:
∴ ΔU = CvΔT = 0....isothermal
⇒ Q = - W
1.406 mass of carbon dioxide is produced
