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sveta [45]
3 years ago
15

I build a fire and burn 3 logs. Apply the Law of Conservation of Matter

Chemistry
1 answer:
photoshop1234 [79]3 years ago
7 0
Capture all of the smoke and weight it. it will weigh exactly the same before and after you burn it but will just be CO2 and H2O gas.
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Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that
victus00 [196]

Answer:

D

Explanation:

the production of an odor would indicate that the heat ignited a chemical reaction

6 0
3 years ago
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Hydroxyl radicals react with and eliminate many atmospheric pollutants. However, the hydroxyl radical does not clean up everythi
Nesterboy [21]

Answer:

ΔHreaction = 263.15 kJ/mol

Explanation:

The reaction is as follow:

OH + CF₂Cl₂ → HOF + CFCl₂

You need to calculate the enthalpy of reaction and for this it is necessary to know the standard enthalpies for each of the compounds. These enthalpies are as follows and can be found in your textbook or on the Internet.

ΔHreaction = ∑ΔHproducts - ∑ΔHreactants

delta(H)_{reaction} =((1*(-97.8)+(1*(-92))-((1*39)+(1*(-491.15))=263.15kJ/mol

7 0
2 years ago
why do you need to think about polarity of the different ingredients in your salad dressing in order for it to turn out well?
vazorg [7]
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3 0
3 years ago
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Relate metallic bonds to the properties of metals.
loris [4]
Metallic bonds can conduct electricity. It depends on what type of metal you use because everything has a different chemical make up and different bond. Metallic bonds make it easy for some metals to be ductile meaning that they can be stretched into thin wires and they can also be malleable which means they can be pound into thin sheets. Also certain atoms will react with water to make rust.
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Which definition best describes global warming?
valkas [14]

Answer:

What effects do wind patterns have on climate?

Explanation:

They move warm water toward the east. They change the amount of precipitation in an area and affect a region's climate.

7 0
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