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1 year ago

14. Convert 4084 grams of NH3 kept at -40°C to Liters at STP. The density as a liquid is

1 answer:

5 0

The density of the gas can be given by the mass of the substance and its volume. A 4084 gms of ammonia has a volume of 5.99 L.

STP is the condition at which the temperature and the pressure of the gas are at the normal and standard conditions.

The density of the ammonia = 681.9gm/L

The mass = 4084 gm

The volume is calculated as:

V = Mass ÷ Volume

= 4084 ÷ 681.9

= 5.99 L

Therefore, at STP the volume of ammonia is 5.99 L.

Learn more about STP here:

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3 years ago

A 10 mm Brinell hardness indenter is used for some hardness testing measurements of a steel alloy. a) Compute the HB of this mat

Lady_Fox [76]

Explanation:

(a) The given data is as follows.

Load applied (P) = 1000 kg

Indentation produced (d) = 2.50 mm

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HB = $\frac{2P}{\pi D [D - \sqrt{(D^{2} - d^{2})}]}$

Now, putting the given values into the above formula as follows.

HB = $\frac{2P}{\pi D [D - \sqrt{(D^{2} - d^{2})}]}$ = $\frac{2 \times 1000 kg}{3.14 \times 10 mm [D - \sqrt{((10 mm)^{2} - (2.50)^{2})}]}$

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3 years ago

Determine a massa, em kg, de um material que está contida em um volume de 18L. Sabe-se que a densidade do material é de 0,9 g/cm

suter [353]

The question in English is "Determine the mass, in kg, of a material that is contained in a volume of 18L. It is known that the material density is 0.9 g/cm 3"

Answer:

We can use a simple equation to solve this problem. 
 d = m/v

Where d is the density, m is the mass and v is the volume.

d = 0.9 g/cm³
m = ?
v = 18 L = 18 x 10³ cm³

By applying the equation,
 0.9 g/cm³ = m / 18 x 10³ cm³
m = 0.9 g/cm³ x 18 x 10³ cm³
 m = 16200 g
m = 16.2 kg

Hence, the mass of 18 L of material is 16.2 kg.

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2 years ago