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Tema [17]
3 years ago
9

Why would the volume of one object calculated using “Measurement and Calculation” differ from the volume of the same object calc

ulated using “Water Displacement.”
Chemistry
2 answers:
Mars2501 [29]3 years ago
8 0

Answer:

Measuring the Volume of Solids

Rectangular prism - Multiply the measurement of the length times the width, then times the height.

Cube - Since all sides are the same measurement, it would be the measurement of any side, or edge, cubed, or a³

Explanation:

Stells [14]3 years ago
4 0
Good job i agree with this answer ^
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The hydrogen gas produced is collected over water at 25.0 oC. The volume of the gas is 7.80 L, and the total pressure in the gas
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Answer:

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Explanation:

To find the mass, you first need to find the moles. This can be found using the Ideal Gas Law equation:

PV = nRT

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Before you can plug the values into the equation, you need to convert Celsius to Kelvin.

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n = ? moles

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(0.980 atm)(7.80 L) = n(0.08206 atm*L/mol*K)(298.15 K)

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Now that you have the number of moles, you can convert it to grams using the atomic mass of zinc. The final answer should have 3 sig figs to match the sig figs in the given values.

Atomic Mass (Zn): 65.380 g/mol

0.312 moles Zn           65.380 grams
-------------------------  x  -------------------------  =  20.4 grams Zn
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