All categories

4 years ago

Which statement correctly describes the condensationof a gas?

Chemistry

1 answer:

jarptica [38.1K]4 years ago

3 0

Answer:

Condensation starts to occur throughout the liquid instead of just on the surface.

You might be interested in

During which changes of state do atoms that cannot move past one another become free to move?

Ipatiy [6.2K]

Answer:

C Is the correct answer!

Took the Cumulative Exam Review :/

7 0

3 years ago

Read 2 more answers

Player agency is limited to video games; there’s no real agency in a game like Chess or Poker. True False

andreev551 [17]

Answer:

False.

Explanation:

"Player agency is about giving players the interactivity to affect and change the game world." Any move a player makes in Chess or Poker quite literally affects the game.

4 0

3 years ago

Read 2 more answers

A 7.028 gram sample of a sodium sulfate hydrate is heated. After driving off all the water, 3.100 grams of the anhydrous salt is

Nady [450]

Answer:

$NaSO_4.10H_2O$

Explanation:

Given that:-

Mass of the hydrated salt = 7.028 g

Mass of the anhydrous salt = 3.100 g

Mass of water eliminated = Mass of the hydrated salt - Mass of the anhydrous salt = 7.028 - 3.100 g = 3.928 g

Moles of water:

Mass of water = 3.928 g

Molar mass of $H_2O$ = 18 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus, moles are:

$moles= \frac{3.928\ g}{18\ g/mol}$

$moles_{water}= 0.2212\ mol$

Moles of anhydrous salt:

Amount = 3.100 g

Molar mass of $NaSO_4$ = 142.04 g/mol

Thus, moles are:

$moles= \frac{3.100\ g}{142.04\ g/mol}$

$moles_{CaSO_4}= 0.02182\ mol$

The simplest ratio of the two are:

$NaSO_4:H_2O$ =0.02182 : 0.2212 = 1 : 10

Hence, the formula for hydrate is:- $NaSO_4.10H_2O$

7 0

3 years ago

When the temperature of a sample of pure water is raised above 25 °C,(1)the hydronium ion concentration will be greater than the

Ludmilka [50]

Answer:

The correct answer is option 3.

Explanation:

$H_2O\rightleftharpoons H^++OH^-$

The expression of $K_w$ is given by :

$K_w=[H^+][OH^-]$

$K_w\propto [H^+]$

$K_w\propto [OH^-]$

Rise in temperature will result in more dissociation of water molecules into hydrogen ions and hydroxide ions.

With an increase in concentration of hydrogen ions and hydroxide ions value of $K_w$ will also increase.

5 0

4 years ago

How is alchemy different from modern chemistry?

Andreas93 [3]

Answer:

Alchemy is generally seen as an archaic proto-science based on superstition that is of little interest to the modern chemist. ... In Western alchemy, perfection is achieved through the action of the Philosophers Stone. Alchemists believed that it could turn any substance into gold, prolong life and cure illness

Explanation:

8 0

4 years ago

Read 2 more answers