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MA_775_DIABLO [31]
3 years ago
10

What information do fossils provide about plants and animals

Chemistry
1 answer:
8_murik_8 [283]3 years ago
4 0

It provides a history on how plants and animals have changed over time

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The paths in which electrons travel are called what ovals ,paths,circles,orbitals
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The paths in which electrons travel are called orbitals.

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True or False: A property is a way to
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True

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A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junct
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Here are the choices:

A. the output current will be much smaller than the input current. 
<span>B. the output voltage will be much larger than the input voltage. </span>
<span>C. the output voltage will be much smaller than the input voltage. </span>
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The correct answer is letter <span>B. the output voltage will be much larger than the input voltage.</span>
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3 years ago
Combustion of 9.511 grams of c4h10 will yield ____ grams of CO2
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Answer:

\boxed{28.81}

Explanation:

We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.  

M_r:      58.12                   44.01

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m/g:     9.511

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\text{Moles of C$_{4}$H$_{10} $} = \text{ 9.511 g C$_{4}$H$_{10} $} \times \dfrac{\text{1 mol C$_{4}$H$_{10} $}}{\text{ 58.12 g C$_{4}$H$_{10} $}} = \text{0.1636 mol C$_{4}$H$_{10}$}

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The molar ratio is 8 mol CO₂:2 mol C₄H₁₀

\text{Moles of CO}_{2} =\text{0.1636 mol C$_{4}$H$_{10} $} \times \dfrac{\text{8 mol CO}_{2}}{\text{2 mol C$_{4}$H$_{10}$}} = \text{0.6546 mol CO}_{2}

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