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3 years ago

How to solve 20.0 mL/ 5.7 g with significant figures and including units

Chemistry

1 answer:

Nutka1998 [239]3 years ago

7 0

$Question$

How to solve 20.0 mL/ 5.7 g with significant figures and including units?

Answer:

$p = 0.25 g/cm3$

Hope this Helps!!

$xXxAnimexXx$

The formula for density is the mass of an object divided by its volume. In equation form, that's d = m/v , where d is the density, m is the mass and v is the volume of the object. The standard units are kg/m³.

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1. The pressure of a gas is 100.0 kPa and its volume is 500.0 ml. If the volume increases to 1,000.0 ml, what is the new pressur

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Answer:

1) The new pressure of the gas is 500 kilopascals.

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$\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}$ (1)

Where:

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2) Let suppose that gas experiments an isothermal process. From the Equation of State for Ideal Gases we construct the following relationship:

$\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}$ (1)

Where:

$P_{1}, P_{2}$ - Initial and final pressure, measured in kPa.

$V_{1}, V_{2}$ - Initial and final pressure, measured in mililiters.

If we know that $V_{1} = 3.60\,L$ , $P_{1} = 10\,kPa$ and $P_{2} = 25\,kPa$ then the new volume of the gas is:

$V_{2} = V_{1}\cdot \left(\frac{P_{1}}{P_{2}} \right)$

$V_{2} = 1.44\,L$

The final volume is 1.44 liters.

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$\frac{P_{2}}{P_{1}} = \frac{V_{1}}{V_{2}}$ (1)

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