Ture or False: air has its components spread evenly, so it is considered a homogenous mixture.

Answers

Answer 1

Answer:

True.

Explanation:

The composition of a mixture is varied by altering the proportions of its constituents. True. Solutions are heterogeneous since the ratio of solute to solvent does not remain the same throughout the solution.


Related Questions

Mm 2mCOO 19. Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x (3 points) 10-11 mol/L. Is this solution acididc, basic, or neutral? Show your work.

Answers

Answer: The hydrogen-ion concentration for the aqueous solution is [tex]10^{-3}mol/L[/tex] and solution is acidic.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration and pOH is calculated by taking negative logarithm of hydroxyl ion concentration.  

[tex]pOH=-\log [OH^-][/tex]  

Putting in the values:

[tex]pOH=-\log[1\times 10^{-11}][/tex]

[tex]pOH=11[/tex]

[tex]pH+pOH=14[/tex]

\[tex]pH=14-11=3[/tex]

[tex]pH=-log[H^+][/tex]

[tex]3=-log[H^+][/tex]

[tex][H^+]=10^{-3}M[/tex]

As pH is less than 7, the solution is acidic.

how many valence electrons does C6H14O6 have?

Answers

chhfjhfhou huohfpgvvocoj ognf

CH3OH can be synthesized by the reaction:
COg + 2 H2g– CH30Hg
What volume of CH3OH gas (in L) can be synthesized if 18.6 L of H2 gas completely reacts at STP conditions?

Answers

Answer:

55

Explanation:

When converting from grams to the must be used as a conversion factor

Answers

moles=grams/molar mass

electrons are transferred in forms of what

Answers

Answer:

ionic bonds

Explanation:

an ionic bond !!!!!!

What are the products we get out of this
reaction? (check picture)

Answers

Explanation:

two compounds because element is the very smallest part of any mixture

If the sun output of solar radiation increased by 20% how would this impact the temperature of earth's mantle

Answers

Answer:

The temperature will not be affected directly

Explanation:

The solar radiation has a direct effect on the outer surface and inner part of the earth but  an increase by 20% of the solar radiation will not cause the temperature of the Earth's mantle to increase because the factors that heat up the Earth's mantle are : Friction between core materials that sink into the center of the planet and Heat from decay of radioactive materials

3.) 2.46 grams of Cu(NO3)2 would contain how many formula units?

Answers

Answer:

7.90×10²¹ formula units

Explanation:

From the question given above, the following data were obtained:

Mass of Cu(NO₃)₂ = 2.46 g

Formula units of Cu(NO₃)₂ =?

From Avogadro's hypothesis,

1 mole of Cu(NO₃)₂ = 6.02×10²³ formula units

Next, we shall determine the mass of 1 mole of Cu(NO₃)₂. This can be obtained as follow:

1 mole of Cu(NO₃)₂ = 63.5 + 2[14 + (3×16)]

= 63.5 + 2[14 + 48]

= 63.5 + 2[62]

= 63.5 + 124

= 187.5 g

Thus,

187.5 g of Cu(NO₃)₂ = 6.02×10²³ formula units

Finally, we shall determine the formula units contained in 2.46 g of Cu(NO₃)₂. This can be obtained as follow:

187.5 g of Cu(NO₃)₂ = 6.02×10²³ formula units.

Therefore,

2.46 g of Cu(NO₃)₂ =

(2.46 × 6.02×10²³)/187.5

= 7.90×10²¹ formula units

Thus, 2.46 g of Cu(NO₃)₂ contains 7.90×10²¹ formula units

You and a friend are swimming at your grandparent's house one toasty

summer afternoon. You have music playing through the Bluetooth speaker

on the pool deck, but every time you go underwater, you can hear the

noise, but you cannot understand the words of the song. What would

explain this phenomenon? *

Sound waves travel faster in a gas than they do in a liquid, which is why you cannot

understand the words,

Sound waves travel faster in a liquid than a gas, our ears are just not designed to

translate the faster moving waves,

Sound waves cannot travel at all in a liquid, which is why you cannot understand the

words and it's a miracle you can even hear the music at all,

Sound waves travel at the same speed regardless of the medium; your grandfather is

turning the music on and off when you go underwater and the noise you hear is the

song stuck in your head,

Answers

Answer:

Sound waves travel faster in a liquid than a gas, our ears are just not designed to  translate the faster moving waves.

Explanation:

Sound waves are mechanical waves which travel through vibrating the medium (the "stuff") they're traveling through. This means they actually move faster through materials that are more dense, and will move more quickly through liquid than gas, and a solid than a liquid. However, our ears are adapted to "translating" sound waves in air rather than water, so we don't understand the music well when the waves move through the water.

A similar idea explains why our vision is blurry underwater; light waves travel at a different speed (slower, not faster!) in water and our eyes perceive this change in speed as blurriness.

What are the major social and political barriers to using solar energy?​

Answers

Solar energy is so promising option as it is having very low operational cost but still it is not being used optimally throughout the world.

True or false: chewing your food is the first step of digestion. o True O False​

Answers

Answer:

True

Explanation:

I searched it up lol

The urinary bladder is a muscular organ of the excretory system that collects urine excreted by the kidney. How does the nervous system help the urinary system in excretion?

Answers

Explanation:

it helps in when the kidney has used the needful nutrients been taken then the unwanted waste product it sends it to the nervous system then the nervous system passes the waste product to the bladder in form of urine

Can you build a fire on the moon? Why or why not?

Answers

Answer:

No.

Explanation:

We can't build a fire on the moon, because moon's atmosphere lacks oxygen.

[tex] \huge \pink{answer}[/tex]

No lightning of a fire on the surface of the moon is impossible..

[tex] \huge \green {reasons - }[/tex]

surface of the moon lacks oxygen which is important for the formation of fire.Surface of the moon doesn't have wind which disables the fire to burn rapidly.

The majority of Earth's energy comes from.

1) Deep ocean vents

2) Zone

3) Volcanoes

4) The sun

Answers

The answer is the sun! Hope this helps you! Have a great day!

Why are halogens unreactive?

A. *Halogens need one to two more electrons to fill their outer shell.
B. Halogens need three to four more electrons to fill their outer shell.
C. D. Halogens have a full outer shell of valence electrons.

Answers

I think it is D, halogens have a full outer shell of valence electrons :)) hope I helped

Answer: B) is the answer.

Explanation:

Sodium bicarbonate (NaHCO3), also known as baking soda, is used to relieve heartburn, sour stomach, or acid indigestion by neutralizing excess stomach acid. When used for this purpose, it is said to belong to the group of medicines called antacids.



How many atoms are found in two molecules of sodium bicarbonate?

Answers

Answer:

NaHCO3 = No. of atoms in one molecule is 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.

We double it for two molecules, so 12 Molecules!

Explanation:

Hope i helped, Brainliest would be appreciated!

Have a nice day!

  -Aadi x

1 pts
Which of the following gases would you predict to be least ideal?
Cu

Answers

Explanation:

The gas that would behave least ideally is CO

Which of the following represents the molecules of one compound and
atoms of one element?

Answers

Answer:

i think its b.c but I'm not sure

Answer:

A

Explanation:

A is element as all of them look the same

b is mixture of atoms

C is mixture of atoms and compounds

D is just atoms

E is mixture of element and compound

give an example of how an organism can use surface tension?

Answers

Answer: Examples of surface tension

Explanation:

Water striders use the high surface tension of water and long, hydrophobic legs to help them stay above water. Water striders use this surface tension to their advantage through their highly adapted legs and distributed weight.

help please! asap!

Which of the following experiments could you perform to investigate the effect temperature has on the volume of a gas? ( AKS 5b DOK 2)

A.
Measure the pressure of the air in a tire on a cold day, a warm day, and a hot day.

B.
Measure the volume of a balloon filled with room temperature air. Place the balloon in a freezer for an hour and then measure its volume again.



C.
Stretch a balloon over the top of a beaker filled with baking soda and vinegar and observe how the balloon changes volume.

D.
Inflate one balloon to a large volume and another balloon to a small volume. Measure the temperature of the air released from both balloons.

Answers

Answer:A

Explanation:

Answer:

m

Explanation:

Which of the following elements would have the greatest attraction for
electrons? *
Rb
sr
Cs
Ba

Answers

Answer:

Sr

Explanation:

because it's electronegativity is the highest.

How many milliliters of 0.100 M HClO4 solution are needed to neutralize 50.00 mL of 0.0832 M NaOH?

Answers

HClO4 +NaOH -----> NaClO4 + H2O
moles of NaOH = (0.0832 x 50 ) /1000= 4.16 x10^-3 moles
since the mole ratio of HClO4 to NaOH is 1:1 the moles of HClO4 is also 4.16 x 10^-3 moles

volume of HClO4 is therefore = moles/ molarity
that is 4.16 x 10^-3mol/ 0.167 mol/L= 0.0249L
multiply by 1000 to convert to ml
0.0249 x 1000= 24.9 ml

The milliliters of 0.100 M HClO4 solution are needed to neutralize 50.00 mL of 0.0832 M NaOH is 24.9 ml.

What is neutralization?

Neutralization is defined as a chemical reaction in which an acid and a base quantitatively react with one another. Because it determines how acidic or basic a solution is, a solution's pH is crucial. The interaction of H+ ions and OH- ions produces water in a neutralization reaction, which occurs when an acid and a base react to form water and a salt.

Since the mole ratio of HClO4 to NaOH is 1:1, the moles of HClO4 are equal to 4.16 x 10-3 moles.

The moles of NaOH are equal to (0.0832 x 50) /1000.

Therefore, the volume of HClO4 is equal to the moles/molarity, which is 4.16 x 10-3mol/ 0.167 mol/L= 0.0249L.

This amount is then multiplied by 1000 to get ml: 0.0249 x 1000 = 24.9 ml.

Thus, the milliliters of 0.100 M HClO4 solution are needed to neutralize 50.00 mL of 0.0832 M NaOH is 24.9 ml.

To learn more about neutralization, refer to the link below:

https://brainly.com/question/27891712

#SPJ2

ASAP PLSSS!!!!! How many atoms of strontium are in a sample of 33.6 mol strontium?


1) 4.22 x 1023 atoms Sr


2) 4.22 x 1024 atoms Sr


3) 2.02 x 1025 atoms Sr


4) 2.02 x1023 atoms Sr

Answers

Answer:

33.6 mol of the atom strontium contains approximately

3) 2.02 × 10²⁵ atoms of strontium

Explanation:

The number of atoms in one mole of a substance is given by Avogadro's number number, [tex]N_A[/tex], which is presented as follows;

1 mole of a substance contains [tex]N_A[/tex] = 6.022 × 10²³ elementary particles

33.6 mol of a substance will contain 33.6 × 6.02214 × 10²³ elementary particles of the substance

Therefore;

33.6 mol of the atom strontium contains 33.6 × 6.02214 × 10²³ = 2.023439 × 10²⁵ atoms of strontium

33.6 mol of the atom strontium contains ≈ 2.02 × 10²⁵ atoms of Sr.

Which best describes a heterogeneous mixture? 0 A table salt and water O B. alcohol and water O C. oil and vinegar O D. hot tea and sugar​

Answers

Answer:

oil and vinegar

the rest would mix well so you can't determine the individual components

Explanation:

HELP 50 POINTS IF YOU DO IT RIGHT NOW
How much energy is released when 944.3 g of phosphoric acid is produced
P4O10(g) + 6H20(l) -- > 4H3PO4(aq)+424 kj

Answers

Answer:

1024.84 Kj

Explanation:

P₄o₁₀(g) + 6H₂O(l) => 4H₃PO₄(aq) + 424Kj

moles H₃PO₄ = (944.3g H₃PO₄) /(97.994g H₃PO₄ /mole  H₃PO₄)

= 9.64 moles H₃PO₄

From equation reaction ratios ...

4 moles H₃PO₄ => 424 Kj

9.64 moles H₃PO₄ =>  (?)

4 moles H₃PO₄/9.64 moles H₃PO₄ = (424Kj)/(?)

Energy Released (Kj) = (424Kj)(9.64moles)/(4moles) = 1021.84 Kj

It is more logical to believe that the complex life sustaining processes of the sun-Earth system were created because they Choose... on one another.

A. rely
B. orbit
C. breathe
D. spin

Answers

They (A. Rely) on eachother.

Which of the following is most likely a chemical reaction?

Group of answer choices

Two solid powders are combined and shaken. The substances form a mixture.

A solid is stirred into a liquid solution. The temperature of the solution decreases.

Three liquids are poured into a beaker and swirled. One of the liquids settles at the bottom.

A liquid is heated until it reaches its boiling point. Vapor is created.

Answers

Answer:

Two solid powders are combined and shaken. The substances form a mixture.

How do living things (such as animals) affect the phosphorus cycle?​

Answers

Explanation:

Phosphorus moves in a circle through rocks, water, soil and sediments and organisms. Over time, rain and weathering cause rocks to release phosphate ions and other minerals.

a tiny particle in the nucleus of an atom that is about the same size as a proton is a(n)
A. electron
B. neutron
C. solid
D. element ​

Answers

Answer:

b. neutron.

Explanation:

I hope this helps.

Answer:

B. Neutron

Explanation:

Neutrons are about the same size as protons. In addition, nuclei are made up of neutrons and protons. Electrons are located in the electron cloud, which is outside of the nucleus. Solids are hard matter, and an element is a substance that cannot be broken down any further.

Hope this helps!

.The cell membrane acts like a filter allowing necessary materials in and waste out, while keeping the organelles and cytoplasm in. This means that a cell membrane is selectively

Answers

Answer: Permeable

Explanation:

The cell membrane is the outermost covering around the animal cells but it is also surrounded by the cell wall in the case of the plant cells. The cell membrane plays an important role in the cell that is it allows the entry of only certain substances like ions, molecules, atoms within the cell and only allows the exist of certain substances out of the cell. This is the selective permeability of the membrane. This process occurs through osmosis in which the desired molecules move from higher to lower concentration. Also it helps in maintaining the balance of nutrients and water within the cell. This helps in getting rid of the waste outside the cell. It provides the protection to the organelles and cytoplasm in the cell against the external injury caused by the external stressor outside the cell like water, pressure, pathogen, and others.

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