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3 years ago

The solvent in a solution evaporates out over time, leaving behind the solute.

Chemistry

1 answer:

Andrews [41]3 years ago

3 0

Answer:

When a solution is heated, the solvent evaporates, leaving behind the dissolved solids as residue. When a solution containing dissolved solutes is heated, the solvent will evaporate.

Explanation:

. P.S. Evaporation to dryness cannot be use for solutions like sugar solution because the sugar will decompose upon heating.

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Water has a high specific heat because: Select one: a. it is a poor insulator b. hydrogen bonds must be broken to raise its temp

Crank

<h2>The required "option is b) hydrogen bonds must be broken to raise its temperature.</h2>

Explanation:

Water has high specific heat due to hydrogen bonds present in it.
The Ionisation of water does not affect the specific heat of the water.
On decreasing the temperature, there is the formation of bonds hence option (d) is wrong.
On increasing the temperature, there is the breaking of bonds hence option (b) is correct.

3 0

3 years ago

If Tommy had started with 0.75 moles of potassium carbonate how many moles of

worty [1.4K]

Answer:

points

Explanation: suggest watching a video

4 0

3 years ago

A sample of 0.370 mol of a metal oxide (m2o3) weighs 55.45 g. how many grams of o are in the sample?

Wewaii [24]

0.370 mol metal oxide = 55.45 g

1 mol = 55.45/0.370 = 149.86 g 

in 1 mol there are 3 mol O = 16 * 3 = 48 g of O 

there is 48/149.86 * 100% O in the sample 

the sample has 48/149.86 * 0.370 = 0.119 g O

6 0

3 years ago

Set the Room temp. to -10.0 °C and observe. What is happening?

Lady bird [3.3K]

Answer:

its getting colder

Explanation:

6 0

3 years ago

Read 2 more answers

Imagine that you are playing a game of Clue in which Mrs. White is killed in the conservatory. You have a device in each room to

myrzilka [38]

Answer:

Mr. Plum killed Mrs. White.

Explanation:

1) Wavelengths for the different light colors (visible light) and related character:

Color Wavelength related character

Violet 380–450 nm ← Professr Plum

Blue 450–485 nm ← Mrs. Peacock

Cyan 485–500 nm

Green 500–565 nm ← Mr. Green

Yellow 565–590 nm ← Colonel Mustard

Orange 590–625 nm

Red 625–740 nm ← Miss Scarlet

2) At the time of the murder, the spectrometers recorded:

a) In the dining room: 520 nm.

520 nm is in the range 500 - 565 nm, which is the range for green color, so Mr. Green was in the dining room and is no more a suspect.

b) In the lounge and study: lower frequencies.

Since frequency and wavelength are inversely related, the wavelengths in the longe and study have to be of yellow and red colors, which are the only two with longer wavelengths from the option given.

Then, Mustard and Scarlet are not criminal.

c) In the library: the second shortest wavelength of the five recorded.

The second shortest wavelength, as per the table, is that of blue color. So, Mrs. Peacock is not the killer.

The only left option is violet, so Mr. Plum is the only who could be at the conservatory and he is the killer.

7 0

3 years ago