What is the correct classification of a mixture in which both a solid and a liquid are visible?A.a homogeneous mixture and a solution
B.a homogeneous mixture and a suspension
C.a heterogeneous mixture and a solution
D.a heterogeneous mixture and a suspension

Answers

Answer 1

Answer:

Answer is: D.a heterogeneous mixture and a suspension.

Suspension is a heterogeneous mixture (solute particles do not dissolve), that contains solid particles (for example nickel sulfide or NiS) sufficiently large for sedimentation.

The internal phase (solid nickel sulfide) is dispersed throughout the external phase (water).

Another example of a suspension is sand in water.

Answer 2

Answer: It would be D.a heterogeneous mixture and a suspension hope this helps

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A student wants to increase the maximum amount of sugar that can dissolve in water. She crushes the sugar and then stirs it into the water. Does this work? Explain why or why not.

Answers

Answer:

The amount of sugar that can dissolve in water increase .

Explanation:

Energy, which is the capacity to do work or produce heat, affects the rate at which a solute will dissolve.
Breaking up, crushing or grinding a sugar cube before adding it to water increases the sugar's surface area.
The more surface area a solute has, the faster it will dissolve because more particles of the sugar can interact with the water.
This means the finer the sugar particles, the faster it will dissolve.
The sugar in the middle of a sugar cube is protected from the water by the sugar in the outer layers of the cube; the water has to go through those outer layers first.
But if you crush the cube into a powder, all of the sugar is exposed to the water at once.

A student viewing a cell with a microscope observes a cell wall a cell wall a cell membrane and a nucleus the presence of these structures indicates that the students is looking at a cell fram a

Answers

He is looking at a plant cell or a fungal cell. At the very least, it's eukaryotic, as some of them have these structures. An animal cell does not have a cell wall.

In which sample of water do the water particles have more energy : 5grams of ice cubes at -10 C, or 5 g of liquid water at 20 C? How do you know?

Answers

Answer: 5 grams of liquid water at 20°C will have more energy.

Explanation:

Kinetic energy is the measure of temperature of the system.

The equation used to calculate kinetic energy of a particle follows:

$E=(3)/(2)kT$

where,

E = kinetic energy of the particles

k = Boltzmann constant = $1.38* 10^(-23)J/K$

T = temperature of the particle

From the above relation, it is visible that kinetic energy is directly related to the temperature of the system.

If the temperature of the particles is high, it means that the particles will have more energy.

We are given:

5 grams of ice cubes at -10°C

5 grams of liquid water at 20°C

So, the temperature of water particles is more than the temperature of ice cube.

Hence, 5 grams of liquid water at 20°C will have more energy.

5 g of liquid water at 20 C because liquids have a higher kinetic energyand the temperature is higher than that of the ice cubes

Why does hot water freeze faster than cold water?

Answers

Answer:

Temperature dependency is responsible for the process that hot water freeze faster than cold water.

Explanation:

The effect given above is called Mpemba Effect. According to this idea hot water freezes more quickly as compared to cold water. But until now there is no convincing explanation for this strange phenomenon. One idea is that hot containers make better thermal contact with a refrigerator and so conduct heat more efficiently because a good conductor is good fro the transfer of heat. Another idea about this effect is that warm water evaporates more quickly and since this is an endothermic process, it cools the water making it freeze more quickly.

warm water evaporates rapidly and since this is an endothermic process, it cools the water making it freeze more quickly.

Explain what tides are include high tide and low tide in your answer

Answers

Answer:the alternate rising and falling of the sea, usually twice in each lunar day at a particular place, due to the attraction of the moon and sun.

"the changing patterns of the tides" Witch makes the high tide, and low tide

Explanation:

the tip of a match contains chemical energy. Kevin's father lit a match and blew out the flame. then he tried to light the same match again . Kevin observed that nothing happened. what can you infer from this observation?