Is coffee a solution, colloid, or suspension?

Answers

Answer 1

Answer:

Coffee is considered a colloid.

What is a colloid

A colloid is a type of mixture in which particles are dispersed throughout a medium, but they are not dissolved or settled. In the case of coffee, it is made up of small particles of coffee grounds suspended in water. These particles are not completely dissolved in the water but remain dispersed throughout, giving coffee its characteristic appearance and texture.

While some components of coffee, such as caffeine and other soluble compounds, are dissolved in the water, the presence of suspended coffee particles qualifies it as a colloid.

Read more on colloid here brainly.com/question/3003333

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Answer 2

Answer: Short Answer: Coffee are not solution but it is colloid and suspension.

Explanation:

The cream is a foam of air suspended in an emulsion composed of vegetable oils and water. Perhaps you decide to have an orange juice, rather than a coffee - that, too, is a colloid. It is a sol, a suspension of solid particles of pulp in an aqueous continuous phase.

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Which scientist performed the cathode ray experiment leading to the discovery of electrons

Answers

The scientist that performed the cathode ray experiment leading to the discovery of electrons is the scientist Sir Joseph John Thompson or J.J. Thompson. It was theorized after the discovery that electrons are present in the atom. In this model, the atom is composed mainly of electrons. It was describe as plum pudding because the electrons are dispersed within the atom.

John Thompson is the answer

Can anybody help me with 2-7

Answers

number 5 - newtons 2nd law states that when a force acts on a object it will cause the object to accelerate

A graduated cylinder has 20 ml (cm3) of water placed in it. An irregularly shaped rock is then dropped in the graduated cylinder and the volume of the rock and water in the cylinder now reads 30 ml (cm3). The mass of the rock dropped into the graduated cylinder is 23 grams. a.) Find the volume of the rock dropped into the graduated cylinder.
b.) Find the density of the rock dropped into the graduated cylinder.

Answers

Answer:

$\boxed {\boxed {\sf v=10 \ mL \ and \ d=2.3 \ g/mL}}$

Explanation:

Answer:

Explanation:

A. Volume

The volume was found using water displacement. Subtract the initial volume from the final volume.

$final \ volume - initial \ volume$

The graduated cylinder had 20 milliliters of water (initial volume).

After the rock was added, the graduated cylinder read 30 milliliters (final volume).

Substitute the values in and subtract.

$30 \ mL- 20 \ mL$

$10 \ mL$

The volume of the rock is 10 milliliters.

B. Density

Density can be found by dividing the mass by the volume.

$d=(m)/(v)$

The mass of the rock is 23 grams. We just found the volume of 10 milliliters.

$m= 23 \ g\nd= 10 \ mL$

Substitute the values in and divide.

$d=(23 \ g)/(10 \ mL)$

$d= 2.3 \ g/mL$

The density of the rock is 2.3 grams per milliliter.

Answer:

Volume = 10 cm3

Density = 2.3g/cm3

Explanation:

volume:

30ml - 20ml = 10ml = 10cm3

density:

density = mass/volume

23/10

2.3g/cm3

What is the role of the judicial branch?to interpret laws
to write laws
to execute laws
to lead the military

Answers

Answer:

to interpret laws

Explanation:

Answer:

To Interpet Laws

Explanation:

Which of the following requires an increase in kinetic energy?liquid ➡ solid

gas ➡ solid

gas ➡ liquid

solid ➡ gas

Answers

Answer: solid ➡ gas

Explanation:

Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another. and thus have least kinetic energy.

For example : Copper

Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another.. they have intermediate kinetic energy between solids and gases.

For example : water

Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out. They have highest kinetic energy.

For example : Helium gas

solid -> gas will need the increase in kinetic energy

What is the nuclear equation for the alpha decay of 173 Yb?

Answers

Yb 173 turns into Er 169 after alpha decay. you can find that by knowing an alpha particle is basically a helium nucleus with 2 protons and 2 neutrons. That means that Yt 173 loses 2 protons and 2 neutrons when undergoing alpha decay.

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Sexual reproduction A. helped maintain a slow rate of evolutionary change.B. limited the material in which natural selection can act upon.C. increased genetic variation.D. maintained the same gene combinations over time.

The empirical formula of a compound is determined to be CH2O, and its molecular mass is found to be 90.087 g/mol. Determine the molecular formula of the compound, showing your work.