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Citrus2011 [14]
3 years ago
5

Which of the following is equal to 0.45 mm3? (B, right?)

Chemistry
1 answer:
Svetradugi [14.3K]3 years ago
6 0
In order to convert mm³ to m³, we use the conversion factor of 1m = 1000 mm. Also, the conversion factor of mm³ to cm³, we use the factor of 1cm = 10 mm.

= (0.45 mm³) x (1 m/ 1000 mm)³ = 4.5 x 10^-10 m³

= (0.45 mm³) x (1 cm/10 mm)³ = 4.5 x 10^-4 cm³

Thus, the answer is letter B. 
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Which step will decrease the pressure of a gas inside a closed cubical container
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In order to <span>decrease the pressure of a gas inside a closed cubical container, you need to decrease the temperature of the container. The volume of the system is rigid so it means volume is constant. By the ideal gas law, temperature and pressure are directly related. Increasing the temperature, increases the pressure and the opposite to happens.</span>
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A pycnometer is a precisely weighted vessel that is used for highly accurate density determinations. Suppose that a pycnometer h
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Answer:

5.758  is the density of the metal ingot in grams per cubic centimeter.

Explanation:

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1 m^3=10^6 cm^3

998.2 kg/m^3=\frac{998.2 \times 1000 g}{10^6 cm^3}=0.9982 g/cm^3

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V=\frac{m'}{d}=\frac{18.05 g}{0.9982 g/cm^3}=18.08 cm^3

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Mass of metal,M' =  9.5 g

Mass of water when metal and water are together ,m''= 56.83 g - M'- M

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Volume of metal = v' =\frac{M'}{d'}

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v' = v - V

v'=19.73 cm^3-18.08 cm^3=

v'=1.65 cm^3

Since volume cannot be in negative .

Density of the metal =d'

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