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oksian1 [2.3K]
3 years ago
8

witch can be classified as a trace fossil A. dinosur bone B. srimp burrow C. imprint on a fern leaf D. mold of a clam shell

Chemistry
2 answers:
kakasveta [241]3 years ago
8 0

B. Shrimp burrow.

Explanation:

A trace fossil is a fossil left by the animal, such as a foot print or a burrow.  It is not part of the actual animal.

pishuonlain [190]3 years ago
4 0

Answer:

Shrimp Burrow

Explanation:

Hope that helped

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<u>Answer:</u>

Earth's climate has changed naturally over the past 650,000 years, moving in and out of ice ages and warm periods. Changes in climate occur because of alterations in Earth's energy balance, which result from some kind of external factor or "forcing" an environmental factor that influences the climate.

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Which sentence best describes how scientists plan out their experiments?
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Answer:

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Explanation:

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The complete combustion of propane (C3H8) in the presence of oxygen yields CO2 and H2O: C3H8 (g) + 5O2 (g) 3CO2 (g) + 4H2O (g) a
mixas84 [53]

Answer:

26.9 L is the volume of CO₂, we obtained

Explanation:

The reaction is: C₃H₈(g) + 5O₂(g)  →  3CO₂ (g) + 4H₂O (g)

Let's determine the reactants moles:

27.5 g . 1mol / 44 g = 0.625 moles

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O₂ density = O₂ mass / O₂ volume

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Then, 0.625 moles will react with (0.625 . 5)/1 = 3.125 moles of O₂

Oxygen is the limiting reactant, we need 3.125 moles but we only have 2.009 moles

Ratio is 5:3. 5 moles of O₂ produce 3 moles of CO₂

Therefore, 2.009 moles of O₂ must produce (2.009 .3) /5 = 1.21 moles of CO₂. Let's find out the volume, by Ideal Gases Law (STP are 1 atm and 273K, the standard conditions)

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3 years ago
How many Mol are in 4.000 grams of MgCl2 ?
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Answer:

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