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katrin2010 [14]
1 year ago
12

Can someone help??. This is super hard

Chemistry
1 answer:
podryga [215]1 year ago
4 0

111 cchuyttrfgh

tyujklkjhgt

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________ exercise strengthens skeletal muscle, and ________ exercise strengthens skeletal and cardiac muscle.
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State one type of additional information that could be used to determine if these three species are closely related.
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Study the bone structure of limbs.

Explanation:

Study the bone structure of limbs can be used to find out the relatedness and relationship among three species because the pattern of bones structure is similar but the structure is different from one another due to different environmental conditions. This study provides important and useful information whether the three species are closely related or not. If they have similar bone structure than we can say that there are more chances that they are closely related to each other.

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A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to prod
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The answer is 6.25g.

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First create your balanced equation. This will give you the stoich ratios needed to answer the question:

2C8H18 + 25O2 → 16CO2 + 18H2O

Remember, we need to work in terms of NUMBERS, but the question gives us MASS. Therefore the next step is to convert the mass of O2 into moles of O2 by dividing by the molar mass:

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Now we can use the stoich ratio from the equation to determine how many moles of H2O are produced:

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