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Paladinen [302]
2 years ago
7

How would one convert 15 seconds to hours?

Chemistry
2 answers:
Tju [1.3M]2 years ago
8 0

Answer:

answer d

Explanation:

kodGreya [7K]2 years ago
5 0

Answer:

A

Explanation:

15 sec   *   1 hr/3600 sec    (note how 'sec'  cancels out and you are left with 'hour' in your answer)   =    15/3600 hour

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PLZZZZZ HELPPP THANK U 10 ptsssss
balandron [24]
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6 0
3 years ago
How has the taxonomy of organisms changed over time
neonofarm [45]

Answer:

When scientist find new species that may have to change classification systems in order to accommodate them. DNA sequencing has also let us find out more about evolutionary relationships. The more recent the common ancestor, the more closely related the two species are.

Explanation:

8 0
3 years ago
Find the density of metal with a volume 4.0 cm and a mass of 8.0 grams.
olga_2 [115]
D=m/v

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3 0
3 years ago
Absolute zero is what temperature on the fahrenheit scale?
vampirchik [111]

Answer:

  • Absolute zero is - 459.67 °F

Explanation:

<u>1) Convert absolute zero to celsius:</u>

  • 0 K = - 273.15°C ( this is per definition of the scale)

<u>2) Convert - 273.15°C to Fahrenheit:</u>

  • T (°F) = T (°C) × 1.8 + 32 (this is the conversion equation=

  • T (°F) = - 273.15 × 1.8 + 32 = - 459.67 °F ← answer

8 0
3 years ago
Calculate the bond energy per mole for breaking all the bonds in methane, CH4. Express your answer to four significant figures a
lesantik [10]

The energy that is essential to break one C-H bond is 414 kJ/mol. Since, there are four C-H bonds in CH4, the energy Δ HCH4 for breaking all the bonds is calculated as Δ HCH4 = 4 x bond energy of C-H bond. By multiplying the 4 with the 414 kJ/mol you can get the answer of 1656 kJ/mol CH4 molecules.

4 0
3 years ago
Read 2 more answers
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