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SVETLANKA909090 [29]
3 years ago
5

Four pounds of gas occupy 10ft^3. What would be it’s density and specific gravity

Mathematics
1 answer:
never [62]3 years ago
5 0

Answer:

\large \boxed{\text{ 0.4 lb/ft}^{3}; 5}

Step-by-step explanation:

1. Density

\begin{array}{rcl}\text{Density} & = & \dfrac{\text{Mass}}{\text{Volume}}\\\\& = & \dfrac{\text{4 lb}}{\text{10 ft}^{3}}\\\\& = &\textbf{0.4 lb/ft}^{\mathbf{3}}\\\end{array}\\\text{The density of the gas is $\large \boxed{\textbf{ 0.4 lb/ft}^{\mathbf{3}}}$}

2. Specific gravity

Specific gravity (sp gr) is the ratio of the density of the density of a gas to the density of dry air at standard temperature and pressure.

At IUPAC standard temperature and pressure (0 °C and 100 kPa), dry air has a density of 0.080 lb/ft³.

\begin{array}{rcl}\text{Sp gr}& = & \dfrac{\rho_{\text{gas}}}{\rho_{\text{dry air}}}\\\\& = & \dfrac{\text{0.4 lb/ft}^{3}}{\text{0.080 lb/ft}^{3}}\\\\& = &\mathbf{5}\\\end{array}\\\text{The specific gravity of the gas is $\large \boxed{\mathbf{5}}$}

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Vita saved $72 last December. This amount represents 2/9 of the total amount she saved last year. What is the total amount Vita
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\dfrac{2}{9} \text { of the saving} = \$72

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Find 1/9 :
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\dfrac{1}{9} \text { of the saving} = \$72 \div 2

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Answer: The total amount is $324.
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Please help on this one?
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