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omeli [17]
3 years ago
15

Biomass can be used to generate electricity. Biomass relies heavily on agricultural crops. Plants release carbon dioxide and wat

er in combustion. Plants use photosynthesis to originally generate the energy that is needed. The chemical energy of these plants all started with what energy source?
A) wind energy
B) solar energy
C) mechanical energy
D) geothermal energy
Chemistry
1 answer:
Goshia [24]3 years ago
6 0

Solar energy.

This whole process starts with the solar energy. It also involves the sun within the process. Solar energy is radiant light and heat that comes from the sun. So it seems to fit in with the story that was given.

Best of luck on your assignment!

- Emacathy

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alexandr402 [8]
Water: hydrogen bonding
carbon tetrafluoride: dispersion or Van del Waals
dichloromethane: dipole-dipole
6 0
3 years ago
Read 2 more answers
Use the periodic table to determine the electron configuration for Ca and Pm in noble-gas notation Ca: [Ar]4s2 [Ar]4s1 [Ar]3s2 [
sveta [45]
Answer:

1) Ca: [Ar]4s²
2) Pm: [Xe]6s²4f⁵

Explanation:

1) Ca:

Its atomic number is 20. So it has 20 protons and 20 electrons.

Since it is in the row (period) 4 the noble gas before it is Ar, and the electron configuration is that of Argon whose atomic number is 18.

So, you have two more electrons (20 - 18 = 2) to distribute.

Those two electrons go the the orbital 4s.

Finally, the electron configuration is [Ar] 4s².

2) Pm

The atomic number of Pm is 61, so it has 61 protons and 61 electrons.

Pm is in the row (period) 6. So, the noble gas before Pm is Xe.

The atomic number of Xe is 54.

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The resultant distribution for Pm is: [Xe]6s² 4f⁵.
5 0
2 years ago
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2C_H. + 702 — 400, + 6H2O
astra-53 [7]

Balanced Eqn

2

C

2

H

6

+

7

O

2

=

4

C

O

2

+

6

H

2

O

By the Balanced eqn

60g ethane requires 7x32= 224g oxygen

here ethane is in excess.oxygen will be fully consumed

hence

300g oxygen will consume  

60

⋅

300

224

=

80.36

g

ethane

leaving (270-80.36)= 189.64 g ethane.

By the Balanced eqn

60g ethane produces 4x44 g CO2

hence amount of CO2 produced =

4

⋅

44

⋅

80.36

60

=

235.72

g

and its no. of moles will be  

235.72

44

=5.36 where 44 is the molar mass of Carbon dioxide

hope this helps

6 0
3 years ago
What is 3O2 in science
andrew11 [14]

Answer:

carbon Suboxide

Explanation:

7 0
2 years ago
How many molecules of excess reactant remain after the reaction is complete?
vazorg [7]
8


It’s 8 bc I said it was 8 ;)
5 0
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