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nordsb [41]
2 years ago
12

Are toolboxes homogeneous or heterogeneous

Chemistry
1 answer:
iVinArrow [24]2 years ago
8 0

Answer:

Homogenous thats it ig

Explanation:

taatjsn

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()
const2013 [10]

Answer:

\large \boxed{\text{-1276 kJ/mol}}

Explanation:

You calculate the energy required to break all the bonds in the reactants.

Then you subtract the energy needed to break all the bonds in the products.

                             CH₃CH₂OH        +  3O₂ ⟶ 2CO₂ + 3H₂O

Bonds:         5C-H 1C-C 1C-O 1O-H    3O=O     4C=O   6O-H

D/kJ·mol⁻¹:    413    347  358  467       495        799      467

\Delta H = \sum{D_{\text{reactants}}} - \sum{D_{\text{products}}}\\\sum{D_{\text{reactants}}} = 5 \times 413 + 1 \times 347 + 1 \times 358 + 1 \times 467 + 3 \times 495 = 3237 + 1485\\=\text{4722 kJ}\\\sum{D_{\text{products}}} = 4 \times 799 + 6 \times 467 =3196 + 2802 = \text{5998 kJ}\\\Delta H = 4722 - 5998= \textbf{-1276 kJ} \\ \text{The overall energy change is $\large \boxed{\textbf{-1276 kJ/mol}}$}.

6 0
4 years ago
If all organisms have DNA, is this an advantage or disadvantage.
ser-zykov [4K]

Answer:

well it depends what this is for but i could be an advantage for lets say research. If all living things have DNA we are able to experiment on them to find out certain things about human or prehistoric life.

Explanation:

3 0
3 years ago
Read 2 more answers
What process puts water vapor into the atmosphere?
cricket20 [7]

Answer:

transpiration

Explanation:

5 0
4 years ago
Read 2 more answers
Which solubility curve on the right best represents the data table on the left?
Ksenya-84 [330]

Answer:

blue curve

Explanation:

edge 2021

6 0
3 years ago
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Why did the atomic model theory change over time
Harlamova29_29 [7]

Answer:

The atomic theory has changed over time as new technologies have become available. Scientific knowledge builds on past research and experimentation. 400 B.C. Democritus, a philosopher in ancient Greece, began the search for a description of matter.

Explanation:

4 0
3 years ago
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