Answer:
New volume is 271 mL
Explanation:
To determine the volume for a gas, when the pressure remains constant we follow this ratio:
V₁ / T₁ = V₂ / T₂
Remember the Ideal Gases Law → P . V = n . R . T
That's why we propose V / T
We need to determine the Absolute T°
25°C + 273 = 298 K
50°C + 273 = 323 K
We convert the volume from mL to L → 250 mL . 1L / 1000 mL = 0.250L
Now we replace: 0.250L / 298K = V₂ / 323K
V₂ = (0.250L / 298K) . 323K → 0.271 L
In conclussion volume of a gas will be increased, while the temperature is also increased and the pressure remains constant.
The molar mass of a 0.314-gram sample of gas having a volume of 1.6 l at 287 k and 0.92 atm. is 5.23 gram.
<h3>What is an Ideal Gas ?</h3>
An Ideal Gas is a law for ideal gas which states that the product of Pressure and Volume is equal to the product of the moles of sample, universal gas constant and temperature.
PV = nRT
The given data in the question is
Pressure = 0.92 atm
Volume = 1.6 l
Temperature = 287 K
0.92 * 1.6 = n * 287 * 0.082
n = 0.06 moles
0.06 = 0.314 / molecular weight
molecular weight = 0.314/0.06
Molecular weight = 5.23 gm
Molar mass = 5.23 gm.
The temperature and pressure conditions at which the gas behaves like an ideal gas is 273 K and 1 atm.
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Answer:
Reactive Oxygen Species (ROS).
Explanation:
<em>Peroxide, superoxide, hydroxyl radical, singlet oxygen and alpha-oxygen conform a group of chemically reactive species containing oxygen, they are collectible known as Reactive Oxygen Species (ROS). </em>These reactive species are big contributors to the oxidative stress in the human body, they can even damage DNA.
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Answer:
The reaction involved in a campfire (burning of wood) includes:
Explanation:
We can clearly find here that when wood burns in presence of oxygen, there is a loss of mass in the form of gaseous products. Thus, in this case, the law of conservation of mass does not come true.
I support Lisa’s statement but there is a fact associated with the law of conservation of mass. The law stands true only when there is a definite mass of the reactants and products mentioned.
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Bromocresol Green belongs to a class of dyes called as <span>Sulfonephthaleins. This dye imparts different colours at different pH's.
Colors at different pH:
</span> Bromocresol Green has a transition pH range between 3.8 and 5.4.
Color Below pH 3.8:
Bromocresol Green imparts Yellow color below pH 3.8.
Color Above pH 5.4:
Bromocresol Green imparts Blue color above pH 5.4.
Due to different colors at different pH this compound is used at Indicator in quantitative analysis techniques like Titration.
Result:
Bromocresol Green will give Blue color at pH 7.