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Arada [10]
3 years ago
7

Light is traveling through the different media shown. In which medium does light travel fastest?

Chemistry
2 answers:
fenix001 [56]3 years ago
8 0

Answer:

Light travels fastest in space.

Explanation:

slega [8]3 years ago
4 0
C. space, the speed of light is fastest
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Convert 7.72 years into days.
Lelu [443]

Answer:2817.8

Explanation:multiply the value by 365

4 0
3 years ago
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The combustion of methane(CH4) produces carbon dioxide and water. Assume that 2.0 mol of CH4 burned in the presence of excess ai
harkovskaia [24]

Answer:

The answer to your question is 98.9 %

Explanation:

Data

moles of methane = CH₄ = 2.0

excess air

Percent yield = ?

mass of CO₂ = 87 g

- Balanced chemical reaction

                CH₄  +  2O₂   ⇒  CO₂  +  2H₂O

      Reactants     Elements       Products

             1                    C                   1

             4                   H                   2

             4                   O                   2

- Calculate the molar mass of CH₄

CH₄ = 12 + 4 = 16 g

- Convert the moles to mass

                     16 g of CH₄ ----------------- 1 mol

                       x                -----------------  2 moles

                       x = (2 x 16) / 1

                       x = 32 g of CH₄

-Calculate the theoretical formation of CO₂

                     16 g of CH₄ ----------------- 44 g of CO₂

                     32 g of CH₄ ----------------  x

                            x = (32 x 44) / 16

                            x = 88 g of CO₂

-Calculate the Percent yield

     Percent yield = Actual yield/Theoretical yield x 100

     Percent yield = 87/88 x 100

    Percent yield = 98.9 %

3 0
3 years ago
Fatty acid with only single covalent bonds is said to be
ohaa [14]
These are known to be saturated.  
The definition of a saturated fatty acid is that the carbon chain coming off of the acid group contains only single bonds.  An unsaturated fatty acid contains at least one double bond in the carbon chain coming off of the acid group.  Saturated fats are usually fats (solid at room temperature) while unsaturated fats can be oils (liquid at room temperature) this is because the single bonds in the saturated fats give the molecule a shape that can stack on another saturated fat molecule more easily which makes the melting points higher.  The double bonds (usually referring to cis double bonds since trans double bonds are in trans fats) in unsaturated fats give the molecule a shape that cannot stack on another unsaturated fat molecule easily which makes the melting point lower.

I hope this helps.  Please let me know if anything is unclear or if you want further explanation.
4 0
4 years ago
In what way would one dozen elephants and one dozen doughnuts be similar?
Gnoma [55]

Answer:

both are a number group of 12

Explanation:

dozen=12

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4 years ago
The different substance in a mixture
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Mixture is physically combined and substance is chemically combined and can only be changed in identity and properties by chemical methods
5 0
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