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Nonamiya [84]
4 years ago
7

An blank is a material that formed from the decaying ancient organisms and is used today as a source

Chemistry
1 answer:
Shkiper50 [21]4 years ago
4 0

A. fossil fuel

Minerals are rocks. Sediment is rocks. Aquifer isn't close to organisms.

Fossils are ancient organisms.

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Lana balanced an equation so that the result was 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr. Which most likely represents the starting e
seropon [69]

Answer:

C2H3Br + O2 → CO2 + H2O + HBr

Explanation:

The term balancing of chemical reaction equation has a unique meaning in chemistry. What it actually means is to ensure that the number of atoms of each element on the left hand side of reaction equation becomes equal to the number of atoms of the same element on the right hand side of the reaction equation.

When we look at the equation; C2H3Br + O2 → CO2 + H2O + HBr, the number of atoms of each element on the left and right hand sides of the given equation are not the same hence the equation is unbalanced.

If we look at the equation; 2C2H3Br + 5O2 → 4CO2 + 2H2O + 2HBr, the number of atoms of each element on both sides of the reaction equation are now equal, thus the later equation is the balanced version of the former.

6 0
3 years ago
What are some properties that can be used to determine a chemical reaction has occurred?
iVinArrow [24]

Answer:

Some signs of a chemical change are a change in color and the formation of bubbles. The five conditions of chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

5 0
3 years ago
Read 2 more answers
CH3<br> CH,CCHCHCHCl<br> OH<br> Spell out the full name of the compound.
Degger [83]

Answer:

CH3 – CH – CH – CH2 – CH – CH3

| | |

CH3 CH2 CH3

|

CH3

Explanation:

3 - etil - 2, 5 - dimetilhexano

7 0
3 years ago
A balloon with a volume of 336.0 mL starts at a temperature of 328K. It is placed in cool water
larisa [96]

Answer:

306.43 K

Explanation:

- Use Charle's law and rearrange formula (V1/T1=V2/T2)

- Hope this helped! Let me know if you would like me to show you step-by-step how to do these types of problems.

7 0
3 years ago
How many chlorine (CI) atoms are in Methylene?​
Aleks04 [339]

Answer:

None

Explanation:

Methylene is an organic compound and organic compounds consist of hydrogen atoms and Carbon atoms in n this case Methylene(CH2) has one carbon and two hydrogens .

6 0
3 years ago
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