1. What kind of mixture is formed when larger particles settle out when
left undisturbed?
A. colloid B. suspension C. solution
D. solvent
LA​

Answers

Answer 1

Answer:

B. Suspension

Explanation:

A suspension is an heterogenous mixture in which the large particles settle out when not disturbed, thus ,can easily be separated by filtration.

An example is a mixture of sand and water.  When left for a while the sand particles are clearly visible at the bottom of the container if its transparent.


Related Questions

Which energy transformation produces electricity and is least likely to negatively impact the environment?

Generating electricity from a natural gas-fired power plant
Generating electricity from a natural gas-fired power plant

Generating electricity from a coal-fired power plant
Generating electricity from a coal-fired power plant

Generating electricity from a nuclear power plant
Generating electricity from a nuclear power plant

Generating electricity from a solar panel system
Generating electricity from a solar panel system

Answers

electricity from solar panels

Explanation:

All other options produce something after or during the time electricity is made. That something is gas. Not solar

How many moles of H2SO4 are required to completely react with 7.20 mol of Al according to the balanced chemical reaction: 2Al(s) +3H2SO4(aq) → Al2(SO4)3(aq) +3H2(g)​

Answers

10.8

7.2mol*3/2=10.8mol.

10.8 moles of H₂SO₄ is required for the reaction.

The balanced equation for the reaction is given below:

2Al + 3H₂SO₄ —> Al₂(SO₄)₃ + 3H₂

From the balanced equation above,

2 moles of Al required 3 moles of H₂SO₄.

Finally, we shall determine the number of mole of H₂SO₄ required to react with 7.20 moles of Al.

This can be obtained as follow:

From the balanced equation above,

2 moles of Al required 3 moles of H₂SO₄.

Therefore,

7.20 moles of Al will require = [tex]\frac{7.2 X 3}{2} \\\\[/tex] = 10.8 moles of H₂SO₄

Thus, 10.8 moles of H₂SO₄ is required for the reaction.

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PLEASE HELP IM TIMED

Which of the following is not an oxidation-reduction reaction?
Upper X e upper F subscript 6 (s) right arrow upper X e upper F subscript 4 (s) plus upper F subscript 2 (g).
2 upper C s (s) plus upper I subscript 2 (g) right arrow 2 upper C s upper I (s).
2 upper H subscript 2 upper S upper O subscript 4 (a q) plus 2 upper B a (upper O upper H) subscript 2 (a q) right arrow 2 upper B a upper S upper O subscript 4 upper H subscript 2 upper O (l).
Upper Z n (s) lus 2 upper A g upper N upper O subscript 3 (a q) right arrow upper Z n (upper N upper O subscript 3) subscript 2 (a q) plus upper A g (s).

Answers

Answer: choice 2

Explanation:

25. Which of the following statements concerning atomic structure is/are correct?
1. The nucleus contains most of an atom's mass.
2. The nucleus contains all the positive charge of an atom.
3. Electrons surround the nucleus and account for the majority of an atom's volume.
1 only
2 only
3 only
2 and 3
1, 2, and 3

Answers

Answer:

It would be 2 and 3

The image shows the structure of an atom, I hope it helps :)

To see the number of atoms of an element in a given molecule we need to multiply stoichiometry to the number that is written on the foot of the element that is stoichiometry. Therefore, the correct option is option 2,3.

What is atom?

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. The nucleus contains all the positive charge of an atom. Electrons surround the nucleus and account for the majority of an atom's volume.

Therefore, the correct option is option 2,3.

To know more about atom, here:

https://brainly.com/question/13518322

#SPJ2

What is the density of a glass piece that has mass of 18 g and a volume of 24 mL?

Answers

Answer:

The answer is 0.75 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{18}{24} = \frac{3}{4} \\ [/tex]

We have the final answer as

0.75 g/mL

Hope this helps you

TRUE OR FALSE? Alloys are used more than pure metals because they are generally softer and less likely to react with air or water.

Answers

Alloys are used much more than pure metals because they are generally stronger and less likely to react with air or water...

So I would say false

At which temperature can water contain the most
dissolved sugar?

Answers

Answer:

At 10ºC or 50ºF water can cotain the most dissolved sugar.

formal charge of hcooh​

Answers

Answer:

What is the question?

The periodic table is organized into groups and periods of elements. The characteristics of a certain group of elements are listed below. Which of these elements is in this group?
Characteristics of a group of elements
•is shiny
•is solid at room temperature
•has atoms with two valence electrons
A-silicone
B-lithium
C-strontium
D-aluminum

Answers

Answer:

C:Strontium

Explanation:

Strontium because all the characteristics you described are apart of the alkaline earth metals and strontium is apart of that group.


If the hydronium ion concentration of a substance is 1.0 X 10-6 M, what would be the pH of that substance??
Show/Describe your work.

Answers

Fam fam fam fam fam just trust bruh I did the work

What total volume of ozone measured at a pressure of 24.5 mmHg and a temperature of 232 K can be destroyed when all of the chlorine from 15.5 g of CF3Cl goes through 10 cycles of these reactions

Answers

Answer:

[tex]1.75272\ \text{m}^3[/tex]

Explanation:

The breakdown reaction of ozone is as follows

[tex]CF_3Cl + UV \rightarrow CF_3 + Cl[/tex]

[tex]Cl + O_3 \rightarrow ClO + O_2[/tex]

[tex]O_3 + UV \rightarrow O_2 + O[/tex]

[tex]ClO + O \rightarrow Cl + O_2[/tex]

It can be seen that 2 moles of ozone is required in the complete cycle

So for 10 cycles, 20 moles of ozone is required

m = Mass of [tex]CF_3Cl[/tex] = 15.5 g

M = Molar mass of [tex]CF_3Cl[/tex] = 104.46 g/mol

P = Pressure = 24.5 mmHg

T = Temperature = 232 K

R = Gas constant = [tex]62.363\ \text{L mmHg/K mol}[/tex]

Number of moles is given by

[tex]n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{15.5}{104.46}\\\Rightarrow n=0.1484\ \text{moles}[/tex]

[tex]20\ \text{moles} = 20\times 0.1484 = 2.968\ \text{moles}[/tex]

From ideal gas law we have

[tex]PV=nRT\\\Rightarrow V=\dfrac{nRT}{P}\\\Rightarrow V=\dfrac{2.968\times 62.363\times 232}{24.5}\\\Rightarrow V=1752.72\ \text{L}=1.75272\ \text{m}^3[/tex]

For 20 cycles of the reaction the volume of the ozone is [tex]1.75272\ \text{m}^3[/tex].

The Total volume of Ozone measured is =  1.7527 m³

Given data :

Mass  of  CF₃Cl = 15.5 g

Molar mass  of  CF₃Cl  = 104.46 g/mol

Pressure ( P ) = 24.5 mmHg

T = 232 K

Gas constant ( R ) = 62.363 L mmHg/K mol

Note : For a complete ozone cycle 2 moles of ozone is required therefore for 10 cycles 20 moles of ozone will be required

First step : Determine number of moles in each cycle reaction

n = m / M  ----- ( 1 )

m = mass = 15.5 g

M = molar mass = 104.46 g/mol

∴ n = 15.5 / 104.46 = 0.1484

Hence the number of moles in 10 cycle = 20 * 0.1484 = 2.968 moles

Next step : Apply Ideal gas law to determine the volume of Ozone

PV = nRT  ----- ( 2 )

n = 2.968

V = ?

R = 62.363 L mmHg/K mol

T = 232 K

P = 24.5 mmHg

V = nRT / P --- ( 3 )

      = ( 2.968 * 62.363 * 232 ) / 24.5

      = 1752.72 L ≈ 1.7527 m³

Hence we can conclude that the Total volume of Ozone measured is =  1.7527 m³

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When a material gains thermal energy and melts, it is undergoing a physical change.

Answers

Answer:

True, it undergoes a physical change.

Explanation:

A physical change is a change that does not change the chemical makeup of a material. This includes altering its shape.

What volume. In liters, of H2O(g) measured at STP is produced by the combustion of 15.63 g of natural gas (CH4) according to the following equation? CHale) +20269) CO2 + 2H2008)

Answers

Answer:

V = 43.95 L

Explanation:

Given data:

Mass of CH₄ decomposed = 15.63 g

Volume of H₂O produced at STP = ?

Solution:

Chemical equation:

CH₄ + 2O₂    →       2H₂O  + CO₂

Number of moles of CH₄:

Number of moles = mass/molar mass

Number of moles = 15.63 g/ 16 g/mol

Number of moles = 0.98 mol

Now we will compare the moles of H₂O with CH₄.

                         CH₄              :              H₂O

                           1                 :                2

                        0.98             :            2×0.98 = 1.96 mol

Volume of hydrogen:

PV = nRT

1 atm × V = 1.96 mol × 0.0821 atm.L/mol.K × 273.15 K

V = 43.95atm.L / 1atm

V = 43.95 L

Analysis of the water content of a lake found in the desert showed that it contained 17.5 percent chloride ion, and has a density of 1.23 g/mL. What is the molarity of the chloride ion in the water

Answers

Answer:

The molarity is 6.0 M.

Explanation:

The concentration of a solution is the amount of solute present in a given amount  of solvent, or a given amount of solution.

In this problem, we are asked to convert percent by mass to molarity, which are two different concentration units.

The percent by mass is the ratio of the mass of a solute to the mass of the solution, multiplied by 100 percent. On the other hand, molarity (M) is defined as the number of moles of solute per liter of solution.

If we have 17.15 percent chloride ion, that means that we have 17.15 grams of chloride ion in 100 grams of solution. The density provided is the density of the solution, so we calculate how many mL correspond to 100 grams of solution:

1.23 g ----------- 1 mL

100 g ------------ x= 81.3 mL

Therefore, 17.5 grams of chloride ion are contained in 81.3 mL. Now we need to convert these grams into moles.

The atomic mass of chlorine is 35.5 g/mol:

35.5 g --------------- 1 mol

17.5 g --------------- x= 0. 49 mol

This 0.49 moles are contained in 81.13 mL, the definition of molarity says that this moles are contained in a liter (or what is the same, 1000 mL):

81.3 mL --------------- 0.49 mol

1000 mL ------------- x= 6.0 M

The molarity of the chloride ion will be 6.0 M.

what elements make up duralumin( an alloy)?​

Answers

Answer:

In addition to aluminium, the main materials in duralumin are copper, manganese and magnesium.

Answer:

The original composition has been varied for particular applications; it may contain about 4 percent copper, 0.5–1 percent manganese, 0.5–1.5 percent magnesium, and, in some formulations, some silicon.

20 POINTS
What is true about the Sun, light bulbs, and flames?

AThey are all made of fire.
BThey are all made by people.
CThey are all found in nature.
DThey are all sources of light energy.

Answers

Answer:

D

Explanation:

Light blubs are not made of fire.

The sun wasnt made by humans.

You cant find Light bulbs in nature.

Meaning it is D.

A scientist who collects and analyzes DNA from a crime scene is a

Answers

Answer:

forensic scientist

Explanation:

forensic science is the discipline in which professionals use scientific means to analyze physical crime evidence. this evidence is then presented in court in order to help determine the innocence or guilt of a specific suspect.

Answer:

Its a forensic scientist :D

Explanation:

I took a test and got it wrong but it showed the right answer and its a forensic scientist

(don't ask how i got it wrong i was rushing!!)

7th grade help me plzzzz

Answers

Answer:

B & A

Explanation:

A Compound consists of two or more atoms from different elements, that are chemically bound together.

A electron carries a negative charge, because it is found in the electron cloud

If your wondering too, A proton carries A Positive charge.

Answer:

2 or more atoms from different elements that are chemically bonded together.

negative charge.

Why do gases diffuse more quickly than liquids?

Choose the correct answer.

A) Liquids can be compressed easily.

B)The particles in gases are not mobile.

C)Liquids are always at lower temperatures than gases.

D)Gas particles move rapidly and have space between them.

Answers

Answer:

D)Gas particles move rapidly and have space between them.

Explanation:

Matter exists in three states namely: solids, liquids and gases. The particles contained in these three states are different from one another. In the gaseous state, the particles are FAR APART from one another i.e. space exists and they move at a very fast rate in contrast to the particles of a liquid, which have less space and move slower.

This rapid movement of gas particles within a less restricted space accounts for the reason why gaseous substances DIFFUSE more quickly than liquids.

1 point
Which element requires the least amount of energy to remove its valence electron(s)?

barium
chlorine
oxygen
carbon

Answers

With an electronegativity of 0.89, Barium requires the least amount of energy to remove its valence electrons.

If a catalyst lowers the activation energy, what raises the activation energy?

heat
a reaction
another catalyst
an inhibitor

Answers

Answer:

an inhibitor

Explanation:

An inhibitor will raise the activation energy of a chemical system because it works in the opposite way a catalyst works.

A catalyst is any chemical substance the increases the rate of chemical reaction. They simply bind the substrate and bring them into reaction instead of passing through the high energy peaks.

An inhibitor works in an opposite way. They raise the activation energy of a reaction and prevents a reaction from taking place.

Answer:

An inhibitor

Explanation:

i did this on edge2020

have a good day

1. How many energy sublevels are in the second principal energy level? 4 3 1 2

Answers

Answer:

2

Explanation:

All the following are physical properties of metals EXCEPT
a. malleability
c. conductivity
b. brittleness
d. ductility

Answers

Explanation:I think it's option b) brittleness

I hope this might help u

please tell me which one?

Answers

Answer:

i think its c

Explanation:

Order the relative rate of diffusion of the following gases from slowest to fastest

Answers

Answer:

Kr, Ar, Ne, N

Explanation:

Hope this helps

What type of bond would be expected between Mg and Ti?
A.hydrogen bond
Bionic bond
C.covalent bond
D.metallic bond

Answers

C. covalent bond.... hope this helps!

A beverage manufacturer wants to increase The solunility of carbon dioxide in its carbonated drinks as beverages produced which action will increase the solubility of CO2 gas the most

A. Decreasing the pressure on it
B. Increasing stirring
C. Decreasing its temperature
D. Increasing its temperature

Answers

Answer: C

Explanation:

PLEASE HELP ME! I am confused on this.

Answers

Answer:

Mohammed has less kinetic energy

Explanation:

m=Kg

V= m/s

KE= kinetic energy = J

the way you work out the answer is:

KE = 1/2 × m × v squared

Does water take up space (have volume)? Yes or no

Answers

Answer:

Yes

Explanation:

Salt is water solution is made salt or water

Answers

Answer:

Both

Explanation:

because salt water comes from water mixing with salt

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