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SVEN [57.7K]
3 years ago
10

Never mind i got it hahahaha

Chemistry
2 answers:
Ipatiy [6.2K]3 years ago
6 0

Answer:eeee

Explanation:

pshichka [43]3 years ago
5 0

Answer:

Congrats I am so happy for you! You rock it!

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The energies of the bonds broken in a certain reaction are greater than the energies of the bonds formed. Which one of the follo
frosja888 [35]

Answer:

a. The reaction is endothermic.

Explanation:

The heat involved in a chemical reaction is given by the enthalpy change (ΔH), which is equal to the balance between the chemical bonds that are broken (release energy) and the chemical bonds that are formed (need energy):

ΔH ≅ bonds broken - bonds formed

If broken bonds > bonds formed ⇒ ΔH > 0 ⇒ endothermic reaction

Therefore, the reaction is endothermic (it requires energy).

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2 years ago
The maximum number of orbits in an atom is _____.<br><br> -three<br> -five<br> -seven<br> -nine
marissa [1.9K]
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Elements do not contain more than 7 electron shells.
4 0
2 years ago
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Zina [86]

Answer:

Explanation:

n CaCO3 = mass / m.wt

             = 500  /( 40 + 12 + 16x 3)

           =   5 mole

n CaO = 5 moles  ( from the balanced equation we have 1:1 moles )

mass of CaO = nCaO X m.wt

                       5 x(  40 +16 )

                 =   280 grams

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3 years ago
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Dennis g studio and I don't have any money

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What happens when light passes through a solution? perform an activity with a homogenous to expalin what happen when light pass
Brilliant_brown [7]

Answer:

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Explanation:

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