does a fish's scales shred as the fish grows larger

Answer:

Sugar dissolves best in water

Carbon Dioxide dissolves best in water

(Not 100% sure on this one) Salt is the least soluble in water

I hope this helped :)

The limiting reactant in the chemical reaction is O₂ because because the O₂ contains the higher starting mass. The correct option is D.

The chemical equation is as :

2H₂ + O₂  --->  2H₂O

The mass of the H₂  = 0.4 g

The molar mass of the H₂  = 2 g/mol

The moles of the H₂  = mass / molar mass

The moles of the H₂  = 0.4 / 2

The moles of the H₂  = 0.2 mol

The mass of the O₂  = 1.8 g

The molar mass of the O₂  = 32 g/mol

The moles of the O₂  = mass / molar mass

The moles of the O₂  = 1.8 / 32

The moles of the O₂  = 0.056 mol

2 moles of H₂  react with 1 mol of O₂

0.056 mol of O₂ react with = 2 × 0.056 = 0.112 mol of H₂

The O₂ is the limiting reactant. The correct option is D.

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Answer:

18.5g Na2CO3

Explanation:

Chromium (III) chloride, CrCl3, reacts with Na2CO3 as follows:

2CrCl3 + 3Na2CO3 → Cr2(CO3)3(s) + 6NaCl

Where 2 moles of CrCl3 react with 3 moles of Na2CO3 to produce 1 mole of Cr2(CO3)3 -The precipitate-

To solve this question we need to find the moles of CrCl3 added. With the chemical equation we can find the moles of Na2CO3 and its mass as follows:

Moles CrCl3:

520mL = 0.520L * (0.224mol/L) = 0.116 moles CrCl3

Moles Na2CO3:

0.116 moles CrCl3 * (3 mol Na2CO3 / 2mol CrCl3) = 0.175 moles Na2CO3

Mass Na2CO3 -Molar mass: 105.99g/mol-

0.175 moles Na2CO3 * (105.99g/mol) = 18.5g Na2CO3

Chrysoberyl is Faceted to produce "cyclic twins" which is the correct option E.

Chrysoberyl is a beryllium aluminate mineral or gemstone with the chemical formula BeAl₂O₄. Chrysoberyl and beryl are two very distinct gemstones, despite the fact that their names are similar and they both contain beryllium. On the Mohs scale of mineral hardness, chrysoberyl, which ranks between corundum and topaz at 8.5, is the third-hardest naturally occurring gemstone that is often found.

Pegmatitic mechanisms result in the formation of chrysoberyl. Relatively low-density molten lava is created during melting in the Earth's crust and has the ability to ascend higher and reach the surface. Because water could not be integrated into the crystallisation of solid minerals, it grew increasingly concentrated in the molten rock as the primary magma body cooled.

As a result, the remaining magma is more abundant in water and uncommon elements that also do not fit into the crystal structures of the main minerals that form rocks. By lowering the temperature range before the magma solidifies fully, water allows the concentration of rare elements to advance to the point where they can create their own unique minerals.

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Complete question:

Chrysoberyl is

A light green-yellow form of Beryl

very common throughout the world

only formed in beryllium-poor environments

the 3rd hardest natural gemstone

Faceted to produce "cyclic twins"

Answer:

9.2% is the answer

Explanation:

In this question asking for the percent error of the students calculated density. The formula that will be given;

density = 9.78g/cm^3

d = 9.78g/cm^3

accepted is on the RT table S = 8.96g/cm^3

%error = (measured - accepted)/accepted * 100%

%error = (9.78 - 8.96/8.96) * 100%

%error = 9.15% or approximately 9.2%

Answer:

1. Solid

2. atom

3. faster and farther apart

4.more freely moving than a solid

5.The amount of matte in an object

Explanation:

Answer:

1. Solid

2. Atom

3. Faster and farther apart

4. More freely moving than a solid

5. The amount of matter in an object.

Answer:

the elements to the right including hydrogen

Explanation:

as you know non-metal tend to gain eletrons

basically group 5, 6, and 7 are nonmetals

group 1, 2, and 3 are metals and group 4 are transitional metals so be careful with group 4

Answer:

True

Explanation:

Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage.

For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water which bypasses the conversion to liquid stage and goes straight to the gaseous form.

Heavy rain fall most commonly causes shoals to form or change shape making depressions and bars in the sand.

Wave shoaling occurs when surface waves slow down, their wave height rises, and the space between waves narrows as they approach shallow water, like a beach. The waves are said to shoal because of this action, which is known as shoaling.

The shoal, a buildup of silt that might be hazardous to ships in a river channel or on a continental shelf.

Conventionally, it is assumed that the continental shelf is less than 10 metres below sea level at low tide. Shoals are created mostly by the same processes that result in offshore bars.

Thus, Heavy rain fall causes shoals to produce and change shape creating depressions and bars in the sand.

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Note that the diagrammatic representation of all the phases of water is attached accordingly.

The processes involved in the changes between gas, solid, and liquid states of matter are:

The changes between gas, solid, and liquid states can be brought about by altering temperature and/or pressure.

For example, decreasing the temperature and/or increasing the pressure can cause a gas to become a liquid or a solid, while increasing the temperature and/or decreasing the pressure can cause a solid or liquid to become a gas. Other factors such as intermolecular forces and molecular structure can also affect the state of matter.

Note that the four phases of matter are gas, solid, liquid, and plasma. In the gas phase, molecules are far apart and move quickly.

In the solid phase, molecules are tightly packed and vibrate in place. In the liquid phase, molecules are close together and move randomly. Plasma is a high-energy state of matter that consists of ionized particles.

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Answer:

20

Explanation:

4V  is the necessary voltage to power the electrolysis of molten sodium chloride.

To create sodium metal and chlorine gas, molten (liquid) sodium chloride can be electrolyzed. A Down's cell is the name of the electrolytic cell utilised in the procedure. The liquid sodium ions in a Down's cell are converted to liquid sodium metal at the cathode. Liquid chlorine ions are oxidised to chlorine gas at the anode. Below is an illustration of the reactions and cell potentials:

oxidation: \(2Cl^{-} (l)\) → \(Cl_{2} (g)\) + \(2e^{-}\)                                  E°= -1.36V

reduction: \(Na^{+} (l) + e^{-}\) → \(Na (l)\)                                    E°= -2.71V

overall : \(2Na^{+} (l) + 2Cl^{-} (l)\) → \(2Na(l) +Cl_{2} (g)\)              E°\(_{cell}\) = -4.07V

For this electrolysis to take place, the battery needs to supply more than 4 volts. The only means to obtain pure sodium metal is by this reaction, which also serves as a significant source of chlorine gas generation. Swimming pools and other surfaces are frequently cleaned and disinfected with chlorine gas.

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Density of the unknown metal is 4.82 g/mL

Given,

mass of block is 83 g

When the block was placed in a graduated cylinder containing water, the volume of the block was 17.2 mL.

we have to find density with the help of these two terms,

As we know,

Density = Mass/volume

therefore,

Density = 83 / 17.2

= 4.82 g/mL

thus, density of unknown metal block is 4.82g/mL

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Digital gold.

Silicon is the material of choice in the chip industry. Unlike the metals normally used to conduct electrical currents, silicon is a 'semiconductor', meaning that its conductive properties can be increased by mixing it with other materials such as phosphorus or boron.

Answer:Unlike the metals normally used to conduct electrical currents, silicon is a 'semiconductor', meaning that its conductive properties can be increased by mixing it with other materials such as phosphorus or boron. This makes it possible to turn an electrical current on or off.

Explanation:

The positively charged center in an atom is called as Nucleus. It is made up of positively charged protons and neutral sub-atomic particle called as neutrons.

What is meant by protons ?

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Answer:

they carry basic genetic material like DNA

Answer:

Chromosomes are thread-like structures in which DNA is tightly packaged within the nucleus. DNA is coiled around proteins called histones, which provide the structural support. Chromosomes help ensure that DNA is replicated and distributed appropriately during cell division.

Answer:104.6cm^3

Explanation:

V of a cylinder =πr2h

V = pi((1.045cm)^2)(30.48)

V = 104.57cm^3

Explanation:

Answer:

104.6

Explanation:

Answer:

I think true

Explanation:

Answer:

Friction of wind against the ocean surface

The two ions present in the solution are:

1. Sodium ion, Na⁺

2. Hydroxide ion, OH¯

The correct answer to the question is the 3rd option. The sodium ion is positive, and the hydroxide ion is negative.

Ions are atoms or group of atoms which possess an electric charge.

Aqueous Sodium hydroxide, NaOH contains sodium ion and hydroxide ion.

The sodium ion is positive while the hydroxide ion is negative as illustrated below:

NaOH(aq) —> Na⁺(aq) + OH¯(aq)

From the illustration above, we can conclude that the correct answer to the question is the 3rd option. The sodium ion is positive, and the hydroxide ion is negative.

Please see attached photo for further details

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Answer:

Neptune and Saturn although Neptune isn't on there so just Saturn.

hope it'll help ya out!

Answer:

matter

Explanation:

some elements are solid

some are liquid and gas

which under one property

Explanation:

\(PV = nRT \\ (200000 \times 3.5 \times {10}^{ - 6} ) = n \times 8.314 \times 300 \\ n = \frac{0.07}{2494.2 } \\ n = 2.81 \times {10}^{ - 5} \)

\( \small{ \star{ \underline{ \blue{ becker}}}}\)

The enthalpy of the reaction is 14 J/mol.

The enthalpy of a reaction (ΔH) is the amount of energy transferred between a system and its surroundings during a chemical reaction at constant pressure, measured in joules per mole (J/mol). This value is important because it can tell us whether a reaction is exothermic or endothermic, as well as give us information about the strength of chemical bonds within the reactants and products.To calculate the enthalpy of a reaction, we need to know the amount of energy released or absorbed (Q) and the number of moles of the compound involved in the reaction (n). We can use the equation:
ΔH = Q/n
Given that 6 moles of a compound produce 84 J of energy, we can calculate the enthalpy of the reaction as follows:
ΔH = Q/n
ΔH = 84 J / 6 mol
ΔH = 14 J/mol
This means that for every mole of the compound involved in the reaction, 14 J of energy is transferred between the system and the surroundings. Since the value is positive, we can conclude that the reaction is endothermic, meaning that it requires an input of energy to occur.It is worth noting that the enthalpy of a reaction can depend on a number of factors, such as temperature, pressure, and the specific conditions under which the reaction occurs. As such, it is important to take these factors into account when calculating or predicting enthalpy values.

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\(\qquad\qquad\huge\underline{{\sf Answer}}\)

According to above statement, HCl ( Hydrochloric acid ) is a strong acid, which when mixed in water dissociates complete in water to form H+ and Cl- ions that means 100% dissociation. but acids weaker than HCl shows relatively less dissociation.

That is less than 100% dissociation when mixed in water ~

This information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

Dissociation is defined as the breaking up of a compound into simpler constituents or components or parts. Ionic compounds dissociates in the water solution. Stronger acids have 100% ability to dissociate.

So we can conclude that this information tells us about the relative dissociation of weaker acids is that weaker acids dissociates less than 100%.

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Answer:

Just be patient, if thy queen wasn't the right one, just be patient the right queen will come soon. Also, if you don't want to loose your queen just tell her how you feel about her and how much you lover her. Never give up on whatever you do, best wishes to you brodie

Explanation:

1) 1-Pentyne

2) But-2-yne

3) Ethyne

4) 1-Propyne

5) 1-Butyne

6) Pent-2-yne

Molecules that contain a triple bond between two carbon atoms are known as alkynes.

1) The number of carbon on the longest chain = 5, (two carbon atoms between the triple bond) therefore the prefix is pen-

The functional group is the triple bond on the first carbon with the suffix -yne

The name of the compound is 1-Pentyne

2) There are 4 carbon atoms on the longest chain, therefore, the prefix is but-

The location of the triple bond functional group (suffix; -yne) is on the second carbon atom

Therefore, the name of the compound is But-2-yne

3) The triple bond functional group is between the only two carbon atoms, therefore, the name is Ethyne

4) The number of carbon atoms = 3, with a prefix prop-, and the functional group on the first carbon atom on the longest chain is the triple bond, with suffix -yne

Therefore, the name of the compound is 1-Propyne

5) The number of carbon atoms on the longest chain = 4, the prefix is but-

The location of the triple bond functional group (suffix -yne) is on the first carbon atom

Therefore, the name is 1-Butyne

6) The number of carbon atoms on the longest chain = 5, the prefix of the compound is pen-

The location of the triple bond functional group (suffix; -yne) is on the second carbon atom, therefore;

The name of the compound is Pent-2-yne

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