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Evgesh-ka [11]
3 years ago
6

Inferences are A. never made by scientists. B. questions that are made by studying conclusions or predictions. C. exactly the sa

me as observations. D. conclusions or predictions that are made by studying observations.
Chemistry
2 answers:
Maksim231197 [3]3 years ago
4 0

The Answer Is D. Have A Great Day

lara31 [8.8K]3 years ago
3 0

Answer:

D

Explanation:

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It would take 8 antacid tablets to produce 120 mL of CO2 gas.
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The molarity of a solution that contains 8 moles of NaOH in 0.5 liters of solution
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At sea level, where the pressure was 104 kPa and temperature 21.1 ºC, a certain mass of air occupies 2.0 m3 . To what volume wil
Romashka [77]

Answer:

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

Explanation:

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas = 104 kPa

P_2 = final pressure of gas = 52 kPa

V_1 = initial volume of gas = 2.0m^3

V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 21.1^oC=273+21.1=294.1K

T_2 = final temperature of gas = -5.0^oC=273+(-5.0)=268 K

Now put all the given values in the above equation, we get:

\frac{104 kPa\times 2.0m^3}{294.1 K}=\frac{52 kPa\times V_2}{268 K}

V_2=3.64 m^3

The volume of air at where the pressure and temperature are  52 kPa, -5.0 ºC is 3.64 m^3.

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