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Strike441 [17]
3 years ago
5

What two waste products the body must eliminate?

Chemistry
1 answer:
Ahat [919]3 years ago
4 0
You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body.
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Which statement describes an investigation to determine a chemical property? A. determining the reactivity of baking soda and vi
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Answer:

Explanation:

A gives off a visible gaseous product when the two are mixed.

The others all talk about physical properties like phase changes and densities.

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Consider the equation: S+302 →SO3 Is this equation balanced? Why or why not?
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How many grams of Ni are formed from 55.3 g of Ni2O3?<br><br> 2Ni2O3(s)⟶4Ni(s)+3O2(g)
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Answer:

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Explanation:

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First we <u>convert 55.3 grams of Ni₂O₃ into moles of Ni₂O₃</u>, using its<em> molar mass</em>:

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Then we <u>convert 0.334 moles of Ni₂O₃ into moles of Ni</u>, using the <em>stoichiometric coefficients of the balanced reaction</em>:

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Finally we <u>calculate how much do 0.668 Ni moles weigh</u>, using the<em> molar mass of Ni </em>:

  • 0.668 mol Ni * 58.69 g/mol = 39.2 g
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2 years ago
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