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3 years ago

When boiling water begins to turn to steam, which of the following remains the same in both the liquid and the vapor

Chemistry

2 answers:

hram777 [196]3 years ago

7 0

The chemical compound H2O remains constant, because its a physical change not a chemical change.

Assoli18 [71]3 years ago

3 0

The phase stays the same

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A 0.245-L flask contains 0.467 mol co2 at 159 °c. Caculate the pressure using Van der Walls equation

AlladinOne [14]

Answer:

The right answer is "60.56 atm".

Explanation:

As we know,

Vander wall's equation is:

⇒ $(P+\frac{n^2 a}{v^2} )(v-nb)=nRT$

or,

⇒ $P=\frac{nRT}{(v-nb)}-\frac{n^2 a}{v^2}$

Here,

a = 3.59 L² atm mol⁻²

b = 0.0427 L mol⁻¹

By putting the values in the above equation, we get

⇒ $P=\frac{0.467\times 0.0821\times 432}{0.245-0.467\times 0.0427}$

$=\frac{(0.467)^2\times 3.49}{(0.245)^2}$

$=73.61-13.05$

$=60.56 \ atm$

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3 years ago

Sodium is much more apt to exist as a cation than is chlorine. this is because __________. sodium is much more apt to exist as a

den301095 [7]

<span>Answer: Correct answers are- Electron affinity decreases; Cl has 7 valence electrons but Na has only 1. So Na is going to lose its e, Cl is going to gain an e.</span>

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3 years ago

In which type of reaction can two compounds exchange ions to form two different compounds? synthesis decomposition single replac

kap26 [50]

Double replacement reaction

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3 years ago

Why was the international system of units adopted?

marissa [1.9K]

To make everything easier to convert so everything universal

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3 years ago

Read 2 more answers

A student obtained a clean, dry, glass-stoppered flask. He weighed the flask stopper and found the total mass to be 32.634g. He

shutvik [7]

Answer :

The mass of water is, 26.845 g

The volume of water is, 26.92 mL

The volume of flask is, 26.92 mL

Explanation : Given,

Mass of flask stopper = 32.634 g

Mass of water and flask stopper = 59.479 g

Density of water = 0.9973 g/mL

First we have to calculate the mass of water.

Mass of water = Mass of water and flask stopper - Mass of flask stopper

Mass of water = 59.479 g - 32.634 g

Mass of water = 26.845 g

Thus, the mass of water is, 26.845 g

Now we have to calculate the volume of water.

$\text{Volume of water}=\frac{\text{Mass of water}}{\text{Density of water}}$

$\text{Volume of water}=\frac{26.845g}{0.9973g/mL}$

$\text{Volume of water}=26.92mL$

Thus, the volume of water is, 26.92 mL

Now we have to calculate the volume of flask.

Volume of flask = Volume of water = 26.92 mL

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4 years ago