Why does water roll off of dry ice?

1 answer:

8 0

It's a combination of carbon dioxide gas from the dry ice, and tiny water droplets.) ... The dry ice fog is heavier (denser) than air, so it sinks down. But it's less dense than water, so it floats on the water. The bubbles are heavier than air, but less dense than carbon dioxide fog, so they'll float on the fog.

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Margarita [4]

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Explanation:

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2 years ago

Which metal atom below would Not be involved in formation of a Type II Compound?

BartSMP [9]

In formation of a Type II Binary Compound, the metal atom present is<span> NOT</span> found in either Group 1 or Group 2 on the periodic table. For the choices, Ba is under Group 2 on the periodic table, which makes it the atom not involved in formation of type II compounds. The answer is B.

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3 years ago

There is more energy after a chemical reaction than before the reaction. true or false

s2008m [1.1K]

It depends on the kind of reaction.
In Endothermic reaction, energy is more before reaction than after reaction.

In Exothermic reaction, energy is less before reaction than after reaction.

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3 years ago

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wegener used that the same dinosaur fossils have been found in different continents to support his theory of continental drift.

shutvik [7]

The answer to this would be true.

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3 years ago

If a sample of HF gas at 694.9 mmHg has a volume of 3.463 Land the volume is changed to 5.887 L, then what will be the new press

VARVARA [1.3K]

Answer:

$\large \boxed{\text{381.7 mmHg}}$

Explanation:

Data:

p₁ = 694.9 mmHg; V₁ = 3.463 L

p₂ = ?; V₂ = 5.887 L

Calculation:

$\begin{array}{rcl}p_{1}V_{1} & = & p_{2}V_{2}\\\text{648.9 mmHg} \times \text{3.463 L} & = & p_{2} \times\text{5.887 L}\\\text{2247.1 mmHg} & = & 5.887p_{2}\\p_{2} & = & \dfrac{\text{2247.1 mmHg}}{5.887}\\\\& = &\textbf{381.7 mmHg}\\\end{array}\\\text{The new pressure of the gas is $\large \boxed{\textbf{381.7 mmHg}}$}$

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3 years ago