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Lostsunrise [7]
2 years ago
8

Scientists rarely say a theory is proven. They only say whether the evidence

Chemistry
1 answer:
nasty-shy [4]2 years ago
7 0
1st Blank: Supports
 

2nd Blank: Refutes (Contradict, Deny, etc)
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A gas has a pressure of 3 atm at 350°C. What will its pressure be at 250°C? The volume and amount of gas is constant. Hint: Conv
vichka [17]

<u>We are given:</u>

P1 = 3 atm                  T1 = 623 K <em>(350 + 273)</em>

P2 = x atm                 T2 = 523 K <em>(250 + 273)</em>

<em />

<u>Solving for x:</u>

From the idea gas equation:

PV = nRT

since number of moles (n) , Volume (V) and the Universal Gas constant(R) are constants;

P / T = k   (where k is a constant)

the value of  k will be the same for a gas with variable pressure and temperature and constant moles and volume

Hence, we can say that:

P1 / T1 = P2 / T2

3 / 623 = x / 523

x = 523 * 3 / 623

x = 2.5 atm (approx)

Therefore, the final pressure is 2.5 atm

7 0
2 years ago
This group has characteristics including: brittleness, insulators/poor conductors, and are often found as gases.
bagirrra123 [75]

Answer:

The answer is non-metals

Explanation:

6 0
2 years ago
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Which object would best be identified by a periodic Doppler shift in a star's spectrum along with a dip in the stars light inten
IgorLugansk [536]
The answer would be a planet<span>. Planets revolve around stars, which means there will come a point where the planet is between the star and our field of vision towards the star. This point will be where the star's radiation will have the lowest intensity. As the planet moves, the intensity will change. The effect is comparable to a lunar or solar eclipse.</span>
5 0
2 years ago
Mass = 25g, Volume = 5mL. What is the density? *
Fantom [35]

Answer:

5ml

Explanation:

m/v

25/5=5

means 25÷5=5

6 0
3 years ago
Inertia increases as an object's_______increases.
lilavasa [31]

Answer:

<h2><em><u>MASS</u></em></h2>

Explanation:

Inertia increases as an object's <u>Mass</u> increases.

3 0
2 years ago
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