Chemical change because your changing one form to another
Answer:
a. True
Explanation:
In this reaction, we will have a <u>hydride transfer</u> to the carbon of the carbonyl group, moving the electrons of the double bond towards the oxygen producing a negative charge. The double bond is then regenerated by removing the chlorine atom from the molecule, producing an <u>aldehyde.</u>
Then, another molecule the LiAlH4 transfers another <u>hydride</u> to the carbon of the carbonyl group, again producing a negative charge on the oxygen. Finally, the hydrogen is protonated producing a <u>primary alcohol.</u>
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See figure 1
I hope it helps!
Answer:
a) Q=19600W b)Q=60W
Explanation:
q=k.(T₀-T₁)/x
a)
T₀=inside temperature (K)= 273+15=288K
T₁=outside temperature(K)= 273-20=253K
x=5x10⁻³m
k=1.4W/m.K
∴q=9800W/m² ⇒ Q=q.Surface
Q=9800W/m² . 1m . 2m = 19600W.
b)
T₀=inside temperature (K)= 273+10=273K
T₁=outside temperature(K)= 273-15=258K
x=10x10⁻³m
k=0.024W/m.K
∴q=60W/m² ⇒ Q=q.Surface
Q=60W/m² . 1m . 2m = 120W.
Answer:
I. CO2
II. the lime water turns milky
III. an insoluble solution was formed; precipitation
IV. CO2+Ca(OH)2-----> CaCO3 + H2O
BF3 has a boron atom with three outer-shell electrons in its ground state and three fluorine atoms containing seven outer electrons. Further, if we observe closely, one boron electron is unpaired in the ground state. During the formation of this compound, the 2s orbital and two 2p orbitals hybridize.
Name of the Molecule: Boron Trifluoride
Molecular Formula: BF3
Geometry: Trigonal Planar