Answer:
3 × 10²⁰ molecules C₉H₃O₄
Explanation:
Step 1: Define
Avagadro's Number: 6.02 × 10²³ atoms, molecules, formula units, etc.
Molar Mass C - 12.01 g/mol
Molar Mass H - 1.01 g/mol
Molar Mass O - 16.00 g/mol
Molar Mass C₉H₃O₄ - 175.12 g/mol
Step 2: Use Dimensional Analysis
= 3.43764 × 10²⁰ molecules C₉H₃O₄
Step 3: Simplify
We are give 1 sig fig.
3.43764 × 10²⁰ molecules C₉H₃O₄ ≈ 3 × 10²⁰ molecules C₉H₃O₄
Answer:
C. Splitting the atom
Explanation:
splitting the atom involves fission
Selena can change from burning fossil fuel in her home to using solar energy.
<h3>What causes climate changes?</h3>
Climate change is caused by the release of the greenhouse gases which is gotten through the use and burning of fossil fuels such as coal.
The use of solar panels and solar energy by Selena in her house can help adjust the climate changes by decreasing the amount of greenhouse gases released into the atmosphere.
Learn more about greenhouse gases here:
brainly.com/question/20349818
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The answer is D, because "Animals without a backbone are invertebrates."
