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grin007 [14]
3 years ago
10

a gas is confined in a steel tank with a volume og 6.982L at 20.20c the gas exerts a pressure of 8.532 atm.after heating the tan

k the pressure of gas increases to 10.406atm.what is the temperature of the heated gas convert celsius temp to kelvins
Chemistry
1 answer:
dsp733 years ago
7 0

To solve this we assume that the gas is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant volume and number of moles of the gas the ratio of T and P is equal to some constant. At another set of condition, the constant is still the same. Calculations are as follows:

T1/P1 = T2/P2

T2 = T1 x P2 / P1

T2 = (20.20+273.15) x 10.406 / 8.532

<span>T2 = 357.782 K or 84.632 C</span>

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6 0
3 years ago
1.
Elenna [48]
<h3>Answer:</h3>

B. The object moves some distance

<h3>Explanation:</h3>
  • Work is the product of force and distance.
  • Work is done on an object when a force is applied on the object making it move some distance.
  • For example; If a mason applies a force of 5 N to move a stone at a distance of 10 m, then the work done will be 50 Joules.
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5 0
3 years ago
One side of a plane wall is held at 200°C while the other side is exposed to a convective environment having T10°C and h 100 W/m
adelina 88 [10]

Answer:

\frac{\dot Q}{A} = 151.33 W/m^2

T_c = 25.153°C

Explanation:

Given data:

one side wall temperature 200°C

other side wall temperature 10°C

h = 100 W/m^2 °C

k = 2.6W/m °C

wall thickness L = 30 cm

we know that heat flux is given as

\frac{\dot Q}{A} = \frac{ T_A - T\infty}{\frac{L}{K} + \frac{1}{h}}

\frac{\dot Q}{A} = \frac{ 20- 10} {\frac{0.30}{2.6} + \frac{1}{100}}

\frac{\dot Q}{A} = 151.33 W/m^2

1515.33 W/m^2 = \frac{ T_A - T_c}{\frac{L}{K}}

solving for temperature for cold surface is given as

T_c = -1515.33 \times \frac{0.3}{2.6} + 200

T_c = 25.153°C

8 0
3 years ago
There are ___________ of different kinds of proteins in the human body?
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In humans, up to ten different proteins can be traced to a single gene. Proteome: It is now estimated that the human body contains between 80,000 and 400,000 proteins. However, they aren't all produced by all the body's cells at any given time. Cells have different proteomes depending on their cell type.

Explanation:

7 0
2 years ago
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How many kilowatt-hours of electricity are used to produce 4.50 kg of magnesium in the electrolysis of molten mgcl2 with an appl
ratelena [41]
First, we need to determine the half reaction of magnesium. It would be expressed as:

Mg2+ + 2e- = Mg

Given the mass of magnesium metal that is produced, we calculate the total charge of the electrolysis by the relations we can get from the half reaction. We do as follows:

4.50 kg Mg ( 1000 g / 1 kg ) ( 1 mol / 24.305 g ) ( 2 mol e- / 1 mol Mg ) ( 96500 C / 1 mol e- ) = 35733388.2 C

We are given the applied EMF in units of V. This value is equal to J/C. So, 5 V is equal to 5 J/C.

35733388.2 C (5 J/C) = 178666941 J
178666941 J ( 1 kW-h / 3.6x10^6 J ) = 49.63 kW-h
3 0
3 years ago
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