Answer:
A
Explanation:
Waxing means getting bigger.
Waning is.. you guessed it... the exact opposite.
Disadvantages<span> with </span>captive breeding <span>compared to the advantages. This includes removing the last few remaining individuals from the wild, which could cause the species to become extinct in the wild even if the idea was for the reintroduction of the animal.
Im sorry if this doesnt help</span>
Answer:
Hydrogen bonds are totally different to both covalent bonds and ionic bonds. Hydrogen bonds are intermolecular bonds, that means they occur in between two molecules. ... When H atom is close to O,F, N atoms those atoms can attract H atoms electrons temporarily, thus making a weak bond.
Explanation:
2KCl = 2K + Cl₂
v(K)=69.9 ml
p(K)=1.78 g/ml
M(K)=39.1 g/mol
M(KCl)=74.6 g/mol
1) m(K)=v(K)p(K)
2) m(KCl)=M(KCl)m(K)/M(K)
3) m(KCl)=M(KCl)v(K)p(K)/M(K)
m(KCl)=74.6*69.9*1.78/39.1=237.39 g
Answer: <span>Fuel cells do not need an extra or rechargeable battery to operate the electronics.
Explanation:
The fuel cells are the batteries pe se. The cars do not need an extra battery and the batteries are not rechargeable.
The cells produce the electric power from the combination of hydrogen and oxygen.
</span>Regarding the other choices, fuel cells use hydrogen gas which needs high pressure, resulting in requiring <span>heavy steel tanks and isolation.
Of course the hydrogen gas is not as wideley distributed
throughout the country as conventional fuel.
And the tecnology is yet expensive.</span>