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4 years ago

How can a substance boil when it is cold?

2 answers:

6 0

When the ambient pressure is reduced to below the vapor pressure of the liquid, the liquid boils. Water typically boils at 100°C when the pressure is equal to 1 atm, but when the pressure is reduced using a vacuum pump, the water boils at room temperature.

Law Incorporation [45]4 years ago

6 0

A substance can boil: When the ambient pressure is reduced to below the vapor pressure of the liquid, the liquid boils. Water typically boils at 100°C when the pressure is equal to 1 atm, but when the pressure is reduced using a vacuum pump, the water boils at room temperature. Mark me brainliest please

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Which of the following does NOT show the law of conservation of mass?

algol [13]

I think the correct answer from the choices listed above is option B. <span>24 mL of Mg burn in 32 mL O2 to produce 56 mL of MgO </span>does not show the law of conservation of mass. Volumes cannot be added because there are volume effects when you add different substances. So, the reactants is not equal to the product.

4 0

4 years ago

Read 2 more answers

Wewaii [24]

Answer:

A.Light +Energy

Explanation:

it is because photo means light and synthesis is more likely referred as energy

8 0

3 years ago

Read 2 more answers

Which gas would have the slowest rate of diffusion, assuming that all gases are at the same temperature?

Iteru [2.4K]

Answer: radon (atomic mass 222 amu

Explanation:

To calculate the rate of diffusion of gas, we use Graham's Law.

This law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows:

$\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}$

atomic mass of krypton= 83.8 amu

atomic mass of argon= 39.95 amu

atomic mass of xenon = 131.3 amu

atomic mass of radon= 222 amu

Thus as atomic mass of radon is highest, its rate of diffusion is slowest.

7 0

4 years ago

How much energy is needed when 1.27 moles of sulfur reacts with excess

pav-90 [236]

Answer:

well what do you think it is

Explanation:

huh?..

6 0

3 years ago

B.__________________ Properties of elements repeat in a regular way as the atomic numbers increase.

Margaret [11]

Periodic properties

8 0

3 years ago