The movement of which layer of Earth drives the motion of the plates on Earth’s crust?
Upper mantle
Lower mantle
Outer core
Inner core

The smallest difference between two objects that can be faithfully detected by a measuring device would be resolution.

Other options are incorrect because:

Resolution, on the other hand, refers to the smallest measurable distance between two points or objects. Hence, the correct option is resolution.

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Answer:

search on YT Khan academy work done by gravity

Explanation:

you will get it for sure with best explanation

mark me please on brainlest

Answer:

 0.5

Explanation:

mol = mass  : MM SiO₂

mol = 0.0102 : 60 g/mol = 0.00017

molecules = 0.00017 x 6.02 x 10²³ = 1.0234 x 10²⁰

The islands with the most successful migration were the blue island and the yellow island with mean values ​​of 4.6 and 4.4. A successful rate of immigration affects the island's biodiversity by introducing new species into the environment, which increases the diversity of organisms living on the island.

Migration of generalist species to a green island would affect specialized species living on the island by competing for resources, as generalist species are better adapted to different environments.

Based on the data, the blue and yellow islands would be the best choice for wildlife refuges because they had the highest mean values ​​and would be more likely to have higher immigration success.

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One way we can think to find a substance that is less dense than air is to think that such substance would float in the air, that is, if we release a ballon with it it would go up.

As we know, ballons that go up are normally filled with hydrogen gas, and it means that, because a ballo filled with hydrogen goes up, hydrogen gas is a substance that is less dense than air.

Answer: Water must be present for this reaction to occur.

Explanation:

Decomposition reactions require breaking of bonds which require energy and thus all of the decomposition reactions are endothermic reactions.

The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) whereas liquids are represented by (l) and gases are represented by (g) after their chemical formulas.

The balanced chemical reaction of \(CaCO_3\) decomposition is:

\(CaCO_3(s)\rightarrow CaO(s)+CO_2(g)\)

The decomposition of \(CaCO_3\) requires heat and leads to formation of CaO as solid and \(CO_2\) as product.

Thus the the statement that is not true is Water must be present for this reaction to occur.

Taking into account the definition of wavelength, frecuency and propagation speed, the correct answer is option A.: The frequency corresponding to an absorption line at 527 nm is 5.69×10¹⁴ Hz

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

Frequency is the number of vibrations that occur in a unit of time. Its unit is s⁻¹ or hertz (Hz).

The propagation speed is the speed with which the wave propagates in the medium.

The propagation speed relate the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f×λ

All electromagnetic waves propagate in a vacuum at a constant speed of 3×10⁸ m/s, the speed of light.

In this case, you know:

Replacing in the definition of propagation speed:

3×10⁸ m/s= f× 527×10⁻⁹ m

Solving:

f= 3×10⁸ m/s ÷ 527×10⁻⁹ m

f= 5.69×10¹⁴ Hz

In summary, the correct answer is option A.: The frequency corresponding to an absorption line at 527 nm is 5.69×10¹⁴ Hz

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The type of chemical reaction that occurs when aluminum (Al) reacts with copper nitrate Cu(NO₃)₂ is a single displacement reaction.

Chemicals reactions are reactions that result in permanent changes in the properties of the substances that undergo the changes.

Some examples of chemical reactions are:

Synthesis reactions - these are reactions in which a single product is obtained from the combination of two or more substances.

Combustion reactions - these are reactions where oxygen combines with other elements to release large amounts of heat and light.

Single displacement reactions - these are reactions in which an element or radical replaces another element in a compound.

For example, the reaction of aluminum with Cu(NO₃)₂.

2 Al + 3 Cu(NO₃)₂ --> 3 Cu + 2 Al(NO₃)₃

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Answer:

Your answer should be the Waxing Gibbous

Explanation:

Hope this helps :) Have a great day!

Answer:

26,654,082.

Explanation:

Answer: grey clouds

Explanation:

Answer:

Nimbostratus clouds if you want to be scientific but grey clouds ae also an answer.

Explanation:

Sorry if this late.

An amino group is a functional group consisting of an amino (-NH2) and a carboxyl (-COOH) group, which is found in proteins.

It is essential for the formation of peptide bonds between amino acids, which are the building blocks of proteins. The amino group is partially positively charged and is therefore able to interact with other molecules through hydrogen bonding and electrostatic interactions.

The amino group is also able to donate a hydrogen atom, making it an important component in many biochemical reactions.

Furthermore, it plays an important role in the folding of proteins, as the electrostatic interactions between the amino and carboxyl groups help stabilize the protein's three-dimensional structure. In addition, the presence of the amino group can influence the solubility of proteins in different solutions.

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Paper used as a writing material is made of pulp (wood).

Paper is a sheet material used for writing on or printing on (or as a non-waterproof container), usually made by draining cellulose fibres from a suspension in water.

Paper is made from cellulose found in trees, which are the main source of cellulose fibre (or woodpulp). Besides woodpulp, paper can be made from other materials such as cotton, flax, esparto, straw, hemp, manilla and jute.

Wood pulp is usually a softwood, used for pulping to make paper.

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HCN, Na2SO4: Combination of compounds.

Mg3N2: Chemical compound.

CO2, H2O: Dissolution or hydration reaction.

Cu, Zn(NO3)2: Single-replacement reaction.

Na, N2: Combination of elements.

Let's analyze each chemical combination to determine the type of reaction involved:

HCN, Na2SO4:

The combination of hydrogen cyanide (HCN) and sodium sulfate (Na2SO4) does not represent a specific chemical reaction. It is simply the combination of two compounds.

Mg3N2:

Mg3N2 represents a chemical compound, magnesium nitride. It does not indicate a specific reaction.

CO2, H2O:

The combination of carbon dioxide (CO2) and water (H2O) represents a chemical reaction known as hydration or dissolution. When carbon dioxide dissolves in water, it forms carbonic acid (H2CO3), which can further dissociate into hydrogen ions (H+) and bicarbonate ions (HCO3-).

Cu, Zn(NO3)2:

The combination of copper (Cu) and zinc nitrate (Zn(NO3)2) represents a single-replacement reaction. Copper displaces zinc from the compound, resulting in the formation of copper nitrate (Cu(NO3)2) and zinc metal (Zn).

Na, N2:

The combination of sodium (Na) and nitrogen gas (N2) does not represent a specific reaction. It is simply the combination of two elements.

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The balanced net ionic equation for the reaction that occurs when aqueous solutions of lead(II) nitrate and barium bromide is,

    Pb2+ (aq.)  + 2Br-(aq.) -------------> PbBr2

Lead(II) nitrate, Pb(NO3)2 and barium bromide, BaBr2, are soluble in aqueous solution. This which means that they dissociate completely to form cations and anions when dissolved in water.

Pb(NO2)3 (aq.) + BaBr2(aq.) -----------> PbBr2 (s) + Ba(NO3)2 (aq.)

Balanced net ionic equation for the reaction is the chemical equation that shows only those elements, compounds, and ions that are directly involved in the chemical reaction. Net ionic equations must be balanced by both mass and charge. Balancing by mass means ensuring that there are equal masses of each element on the product and reactant sides. Balancing by charge means making sure that the overall charge is the same on both sides of the equation.

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The concentration of Zn²⁺ ions at the cathode of the concentration cell is 0.646 M.

The concentration of the Zn²⁺ ions at the cathode of the concentration cell is determined as follows:

At the anode, oxidation half-reaction: Zn(s) ---> Zn²⁺ (aq) + 2 e⁻ [Zn⁺] = 0.100 M

At the cathode, reduction half-reaction: Zn²⁺ (aq) + 2 e⁻ ----> Zn (s)  [Zn⁺] =  x

The Ecell = 24.0 mV or 0.024 V

Using the Nernst equation:

Ecell = E°cell - 0.0592/n * log([Zn⁺]anode/[Zn⁺]cathode)

E°cell of a concentration cell = 0

where;

n is the number of moles of ions = 2

0.024 =  0 - 0.0592/2 * log (0.1/x)

y = 0.646 M

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The diagram shows a picture of a compound.

A compound is a substance that is made up of two or more different elements that are chemically bonded together in a specific ratio.

This means that the elements are combined in a way that creates a new substance with different physical and chemical properties than the individual elements.

Compounds can be formed through a variety of chemical reactions, such as combining elements through a chemical bond or through a reaction between an acid and a base.

So for the given diagram, we can see that it represents two or more elements chemically combined.

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Answer:

Explanation:

The measure of energy used in electrochemistry is the cell potential (ecell), which is the difference in electrical potential between two electrodes. A common term for this difference in electrical potential is voltage or emf.

Answer:

b or c but I would just pick c

Answer:

C

Explanation:

Sun is an energy source not a matter.

We would need about 16 hydrogen atoms so that we can convert the compound to a saturated fat.

In animal products like meat and dairy, saturated fat is a form of dietary fat that is normally solid at room temperature. It is known as being "saturated" because each molecule of fat has the most hydrogen atoms possible, giving it a stable structure.

We can see this by counting the number of double bonds in the fat and there are eight of them so sixteen hydrogen atoms are needed for saturation.

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The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.

A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.

This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.

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Explanation:

Conduction is heat transfer by phisical contact. In a macroscopic scale matter is stationary and heat or energy is transferred from particle to particle. Since heat moves from particle to particle is the slowest way of transferring heat.

In convection the heat is being transferred by the movement of a fluid. And in radiation we don't require any medium for heat transfer since it takes place electromagnetic waves. They are faster than conduction.

Answer: True. Because energy is transferred from particle to particle.

Not everything is matter. Here's a list of what we call NON-MATTER.

___________________________________________________________

        Non matter...

___________________________________________________________

Hope it helps!

May i have brainliest?

\(\huge\boxed{Thanks,\;Plip.}\)

Answer:

The correct answer is 0.277 M HCl

Explanation:

NaOH is a strong base and HCl is a strong acid. NaOH reacts with HCl to form a salt (NaCl) and water via a neutralization reaction, as follows:

NaOH + HCl → NaCl + H₂O

At the equivalence point, the moles of NaOH added is equal to the moles of HCl present in the solution to be titrated. Moreover, the moles can be calculated as the product of the concentration of base or acid (Cb or Ca) and the volume (Vb and Va), as follows:

moles NaOH = moles HCl

Cb x Vb         =  Ca x Va

Thus, we calculate the concentration of HCl (Ca), as follows:

Ca = (Cb x Vb)/Va = (0.146 M x 47.5 mL)/(25.0 mL)= 0.277 M

Answer:

A. The seeds on the ground are going to grow into new trees.

Explanation:

Trees are renewable resources.

\(\boxed{\sf {Ca(OH)_2(s)\atop Calcium\:Hydroxide}\longrightarrow {CaO(s)\atop Calcium\;oxide}+{H_2O(g)\atop water}}\)

On reactant side

On product side

hence balanced.

Answer:

To resolve this, we need to place the coefficient “2” in front of the sodium in the reactant, to give the equation shown below. 2 Na (s) + Cl 2 (g) → 2 NaCl (s) In this equation, there are two sodiums in the reactants, two sodiums in the products, two chlorines in the reactants and two chlorines in the products; the equation is now balanced.

Explanation:

The balanced chemical equation is CaS + AlC → A + CaC

To balance the chemical equation CaS + AlC → A + CaC, we need to ensure that the same number of atoms of each element is present on both sides of the equation. Here's the step-by-step process to balance the equation:

Begin by counting the number of atoms of each element on both sides of the equation.

Left side (reactants):

Calcium (Ca): 1

Sulfur (S): 1

Aluminum (Al): 1

Carbon (C): 1

Right side (products):

A: 1

Calcium (Ca): 1

Carbon (C): 1

Sulfur (S): 0

Start by balancing the elements that appear in the fewest compounds. In this case, we can balance sulfur (S) first. Since there is only one sulfur atom on the left side and none on the right side, we need to add a coefficient of 1 in front of A on the right side to balance the sulfur.

CaS + AlC → 1A + CaC

Next, balance calcium (Ca) by adding a coefficient of 1 in front of CaS on the left side.

1CaS + AlC → 1A + CaC

Now, balance aluminum (Al) by adding a coefficient of 1 in front of AlC on the left side.

1CaS + 1AlC → 1A + CaC

Finally, balance carbon (C) by adding a coefficient of 1 in front of CaC on the right side.

1CaS + 1AlC → 1A + 1CaC

The balanced chemical equation is:

CaS + AlC → A + CaC

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Answer:

250 mL

Explanation:

0.5 × 100 = 0.2 × (volume)

(volume) = 0.5 × 100 / 0.2 = 250 mL