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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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Step-by-step explanation:

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2 years ago
Two containers designed to hold water are side by side, both in the shape of a cylinder. Container A has a radius of 15 feet and
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Answer:

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Step-by-step explanation:

The question is essentially asking the ratio of the volumes.

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The ratio of volumes is ...

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Container B will be about 65.6% full when container A is empty.

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An airplane has a wingspan of 20 feet and a length of 15 feet. If the model of this airplane has a wingspan of 8 inches, what is
Katen [24]

Answer:

The length of the model is 6 inches.

Step-by-step explanation:

The wingspan of the airplane and length of the airplane are a ratio of 4:3

The model is also supposed to be 4:3.

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Or, 20x12=240

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8 0
2 years ago
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When 5 is subtracted from the square of a number, the result is 4 times the number. Find the negative solution.
wariber [46]

Answer:

-1

Step-by-step explanation:

You can write it as...

x^{2} -5=4x

Carry the 4x

x^{2} -4x-5=0

Then use the quadratic formula to solve, since you want to find the negative solution, you don't need to find the positive solution, so we will have

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Therefore our answer is -1

8 0
3 years ago
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