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bezimeni [28]
3 years ago
14

plz help very many points so there better be an answer if u say i just need the points sorry i will report u.

Chemistry
1 answer:
Naily [24]3 years ago
7 0

Answer:

1-C

2-A

3-F

4-B

5-D

6-E

Explanation:

please mark me as brainlist.......

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Consider a gray and opaque surface at 0°c in an environment at 25°C. The surface has an emissivity of 0.8. if the radiation in
valina [46]

The radiosity of this surface is 299.95W/m².

<h3>Calculation :</h3>

Given, € 0.8

Ta=0°C 273K

For opaque body., T = 0

a+ p = 1

€ = a (Kirchoff's Law)

p = (1-E)

Radiosity = leaving energy from the surface

= px 240 +€σT4

= (1-E) × 240 +0.8 x 5.67 x 10-8 (2734)

= (1-0.8) × 240 +0.8 x 5.67 × 10-8 (2734)

= 299.95W/m²

So, now after doing the calculations we can say that the radiosity of the surface was 299.95W/m².

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7 0
2 years ago
When particles are added pressure will do what and why
ElenaW [278]
Because area of the container has increased , there will be fewer of collisions per unit area and the pressure will decrease . Volume is inversely proportional to pressure , if the number of  particles and temperature is constant
( V = 1/P) and number of particle is proportional to pressure if average Kinetic energy of the particle remain same , the average force particle will remain same too so at some places and there will be more collision and there is greater pressure

3 0
3 years ago
A flexible container at an initial volume of 8.15 l contains 6.51 mol of gas. more gas is then added to the container until it r
kirill [66]
<span>A </span>flexible container<span> at an </span>initial volume<span> of 7.14 </span>L contains<span> 7.51 </span>mol<span> of </span>gas<span>. </span>More gas<span> is</span>then added<span> to the </span>container until<span> it </span>reaches<span> a </span>final volume<span> of 17.7 </span>L<span>. </span>Assuming<span> the </span>pressure<span> and</span>temperature<span> of the </span>gas remain constant<span>, </span>calculate<span> the </span>number<span> of </span>moles<span> of </span>gas added<span> to the </span>container<span>.</span>
3 0
3 years ago
How much heat energy is required to raise the temperature of 50g of bromine from 25°C to 30°C? [Specific heat capacity of bromin
Elza [17]

Answer: 56.5 J

Explanation:

7 0
2 years ago
57. A recipe for s'mores calls for 2 graham crackers, 2 chocolate pieces and 1 marshmallow. If I
geniusboy [140]

Answer:Noble gases:

 are highly reactive.

 react only with other gases.

 do not appear in the periodic table.

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Explanation:Noble gases:

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 react only with other gases.

 do not appear in the periodic table.

 are not very reactive with other elements.

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