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3 years ago

Convert a pressure of 0.0248 mm Hg to the equivalent pressure in pascals (Pa).

Chemistry

1 answer:

drek231 [11]3 years ago

5 0

Answer is 3.306 Pa.

Explanation:

This is a simple unit conversion problem.

1 atm = 760 mmHg = 101325 Pa

Hence,

0.0248 mmHg = (101325 Pa / 760 mmHg) x 0.0248 mmHg

= 3.306 Pa

Pressure can be measured by using many units such as atm, Pa, torr, bar, cmHg, mmHg and so on.

The relationships among those units as follows

1 atm = 101325 Pa = 1.01325 bar = 760 torr, 760 mmHg = 76 cmHg

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A bottle containing 415 g of cleaning solution is used to clean hospital equipment. If the cleaning solution has a specific grav

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Explanation:

The question requires us to calculate the volume, in mL, of solution is used to clean hospital equipment, given that 415g of this solution are used and the specific gravity of the solution is 0.860.

Measurements > Density

Specific gravity is defined as the ratio between the density of a given substance to the density of a reference material, such as water:

$Specific\text{ gravity = }\frac{density\text{ of substance}}{density\text{ of reference substance}}$

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$density=\frac{mass}{volume}$

Considering the reference substance as water and its density as 1.00 g/mL, we can determine the density of the substance which specific gravity is 0.860:

$0.860=\frac{density\text{ of substance}}{1.00g/mL}\rightarrow density\text{ of substance = 0.860g/mL}$

Thus, taking water as the reference substance, we can say that the density of the cleaning solution is 0.860 g/mL.

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$\begin{gathered} density=\frac{mass}{volume}\rightarrow volume=\frac{mass}{density} \\ \\ volume=\frac{415g}{0.860g/mL}=483mL \end{gathered}$

Therefore, 483 mL of the cleaning solution are used to clean hospital equipment.

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