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Goshia [24]
4 years ago
7

The windowpanes are___________ a. opaque b. transparent c. absorbent .

Physics
2 answers:
kogti [31]4 years ago
4 0

Answer:

The windowpanes are- transparent.

The color of the panes are due to the wavelengths of light that the glass- allows to pass through

Explanation:

Just answered the question.

Naddik [55]4 years ago
4 0

Answer:

The two answers are:

Explanation:

1) transparent

2) allows to pass through

I also just did this question. No lie. I hope this helps!

- sincerelynini

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A sample of gas with a volume of 750 mL exerts a pressure of 98 kPa at 30 °C.What pressure will the sample exert when it is comp
Flura [38]

Answer:

240 kPa

Explanation:

The ideal gas law states:

pV=nRT

where

p is the gas pressure

V is the gas volume

n is the number of moles

R is the gas constant

T is the absolute temperature of the gas

For a fixed amount of gas, n and R are constant, so we can rewrite the equation as

\frac{pV}{T}=const.

For the gas in the problem, which undergoes a transformation, this can be rewritten as

\frac{p_1V_1}{T_1}=\frac{p_2V_2}{T_2}

where we have:

p_1 = 98 kPa=9.8\cdot 10^4 Pa is the initial pressure

V_1 = 750 mL=0.75 L=0.75\cdot 10^{-3} m^3 is the initial volume

T_1 =30^{\circ}C =303 K is the initial temperature

p_2 is the final pressure

V_2=250 mL=0.25 L=0.25\cdot 10^{-3} m^3 is the final volume

T_2=-25^{\circ}C=248 K is the final temperature

Solving the formula for p2, we find the final pressure of the gas:

p_2 = \frac{p_1 V_1 T_2}{T_1 V_2}=\frac{(9.8\cdot 10^4 Pa)(0.75\cdot 10^{-3}m^3)(248 K)}{(303 K)(0.25\cdot 10^{-3} m^3)}=2.4\cdot 10^5 Pa = 240 kPa

3 0
3 years ago
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