What do astronomers use to calculate the age of the universe? Select three options.

Chemistry

1 answer:

sasho [114]3 years ago

7 0

The answers are

The age of the oldest stars

How fast distant galaxies are moving away from us

Patterns of background radiation.

Explanation:

The Astronomers calculate the age of the universe by looking for oldest stars, and by measuring the rate of expansion of the universe and back to big bang.

The Astronomers used the techniques like the age of oldest stars, how fast the distant galaxies are moving away from us, patterns of background radiation and along with the Big Bang as reference point, they estimate that the universe may be approximately 12 billion years old.

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If a plant produces 4.76 mol of C6H12O6, how many moles of H2O are needed

mylen [45]

Hello!

The overall photosynthesis reaction is the following one:

6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

To calculate how many moles of H₂O are needed it a plant produces 4,76 moles of C₆H₁₂O₆ (glucose) we'll need to use the following conversion factor, applying the reaction coefficients from the chemical equation of the photosynthesis reaction:

$4,76 moles C_6H_1_2O_6* \frac{6 moles H_2O}{1 mol C_6H_1_2O_6}=28,56 moles H_2O$

So, 28,56 moles of H₂O are required by a plant to produce 4,76 moles of Glucose, in the Photosynthesis reaction.

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DiKsa [7]

Answer:

Im pretty sure its true

Explanation:

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3 years ago

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jok3333 [9.3K]

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MrRissso [65]

Answer:

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