Which process occurs in a fission nuclear reactor?
Nuclei combine.
Nuclei split apart.
Neutrons combine.
Neutrons split apart.

Answer:

Rock A will have far more chemical weathering than Rock B due to the rise in area effect

Explanation:

Rock A undergoes both Physical and Chemical weathering. So, thanks to physical weathering there'll appear cracks within the rock, which can, in turn, increase the area of rock on which weathering is occurring. So, Chemical weathering will happen much faster now as there's a rise in the area. within the case of Rock B, there's only chemical weathering therefore the increase in the area won't be that very much like compared to Rock A.

The true statements about catalysts are the statement 1,2 and 3.

1. Catalysts increase the rate of reaction: Catalysts facilitate chemical reactions by providing an alternative reaction pathway with lower activation energy. They enhance the rate of the reaction without being consumed in the process.

2. Catalysts behave as reactants in the reaction mixture: Catalysts participate in the reaction by interacting with the reactants. They form temporary bonds with the reactant molecules, leading to the formation of an intermediate complex that ultimately results in the desired products.

3. Catalysts decrease the activation energy of a reaction: Catalysts lower the energy barrier required for a reaction to occur by providing an alternative pathway with a lower activation energy. This enables the reactants to overcome the energy barrier more easily, thus increasing the reaction rate.

4. Catalysts show no physical change at the end of the reaction: Catalysts are not consumed or permanently altered in the reaction. They remain chemically unchanged and are available to participate in subsequent reaction cycles.

The statement "Catalysts are required in large concentrations in a reaction" is false. Catalysts work effectively even in small concentrations, as their role is to facilitate the reaction rather than being directly involved in the stoichiometry of the reaction.

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Answer:

The relative formula mass of H₂O can be calculated by adding the atomic masses of two hydrogen atoms and one oxygen atom in the molecule. The atomic mass of hydrogen is 1 and the atomic mass of oxygen is 16. So, the relative formula mass of H₂O is:

(2 x 1) + 16 = 18

Explanation:

The mole ratio of the CO2 to LiOH is 1:2

The mole ratio is 1:2.

If 1 mole of CO2 reacts with 2 moles of LiOH

x moles of CO2 will react with 12.5 moles of LiOH

x = 6.25 moles

If 2 moles of LiOH produces 1 mole of water

12.5 moles of LiOH will produce 12.5 * 1/2

= 6.25 moles of water

Mole ratio of water to calcium carbide is 2:1

Number of moles of CaC2 = 27 g/64 g/mol

= 0.42 moles

1 mole of CaC2 reacts with 2 moles of H2O

0.42 moles of CaC2 reacts with 0.42 * 2/1

= 0.84 moles

If 1 mole of CaC2 lead to the formation of 1 mole of C2H2

Then 0.42 moles of C2H2 is formed

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Stoichiometric amounts relate to the proportional amounts of reactants and products in a balanced chemical equation.

What transpires during a chemical reaction to the molecules of the reactants?

Only atoms from the reactants can wind up in the products of a chemical reaction. No atoms are annihilated or made into new ones. To create the products, the reactants come into contact with one another, the bonds between their atoms are broken, and the atoms then rearrange and establish new bonds.

The frequency of collisions between the two reactants will grow as the reactant concentration rises. There are times when collisions don't cause a response (atoms misaligned or insufficient energy, etc.). More collisions and reaction possibilities result from higher concentrations.

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It's condensation in which gas particles have a higher kinetic energy..

Therefore, to the thousandth part, the predicted output of Na₂CO₃ from 2.153 g of NaHCO₃ is 2.72 g.

Certain experimental errors can provide high findings, while others might produce negative outcomes. As a result, the percent yield can be higher or lower than 100%. Baking soda, NaHCO₃, weighs 1.654 g and breaks down to form 1.028 g of solid sodium carbonate.

The following is the chemically balanced equation for the reaction:

Na₂CO₃ + H₂O + CO₂ = NaHCO₃ + NaOH

Finally, we may use the molar mass of Na₂CO₃ to convert its moles to grams.

                     Molar mass of NaHCO₃ = 84.01 g/mol

                     Molar mass of Na₂CO₃ = 105.99 g/mol

                     = mass/molar mass

                    = 2.153 g / 84.01 g/mol

                       = 0.0256 mol

One mole of NaHCO₃ reacts to generate one mole of Na₂CO₃ according to the equation, so:

Na₂CO₃ has a molecular weight of 0.0256 mol.

Lastly, we may use the molar mass of Na₂CO₃ to convert its moles to grammes:

Mass of Na₂CO₃ = number of moles × molar mass

                        = 0.0256 mol × 105.99 g/mol

                                        = 2.72 g

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Answer:

a balanced force since the object isn't moving

hope this helped

b.solution

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thank you

Answer:

electron

Explanation:

The mass (in grams) of magnesium sulfate, MgSO₄ that would be produced from the reaction is 87.76 g

The mass of magnesium sulfate, MgSO₄ produced can be obtain as illustrated below:

Al₂(SO₄)₃ + 3Mg -> 2Al + 3MgSO₄ ΔH = +722 KJ

From the balanced equation above,

When 722 KJ of heat were absorbed, 360 g of MgSO₄ were produced

Therefore,

When 176 KJ of heat is absorbed = (176 × 360) / 722 = 87.76 g of MgSO₄ will be produce

Thus, the mass of MgSO₄ produced is 87.76 g

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Answer:

B) increases

higher temperature = higher pressure

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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Answer:

A

Explanation:

A

Answer:

Rain

Explanation:

Clouds are formed from water vapor, which turns into ice when the temperature is below freezing, and falls as liquid rain water when temperatures are above freezing. Since the temperatures in the clouds and in the air are above freezing, rain will fall in Florida.

Answer:

Rain

Explanation:

Answer:

A gentle wind or when the wind blows slowly, it is called a breeze.

Explanation:

Breezes are the result of differences in air temperature. Warm air rises, leaving behind low pressure near the ground. Cold air creates high pressure and sinks to compensate; wind then blows from areas of high pressure to areas of low pressure to try to equalize pressures.

Answer:

under low pressure of air makes wind blow weakly or very little.

To calculate the moles of H+ and OH-, you need to know the concentration of the solution in terms of its pH or pOH value.

When you get the pH of the solution, you can use this formula to calculate the concentration of H+ ions: [H+] = 10^(-pH)

Also, if you know the pOH of the solution, you can use this formula to calculate the concentration of OH- ions: [OH-] = 10^(-pOH)

Having determined the concentration of H+ and OH- ions, the molarity formula can be used to calculate the number of moles of each ion as follows: moles = concentration (in mol/L) x volume (in L)

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The amount of volume of KOH solution that should be added to make 500mL of a 0.300M solution is 200mL.

The volume of a solution given the concentration can be calculated using the following expression;

CaVa = CbVb

Where;

According to this question, we are to calculate how many mL of a 0.75 M OH solution that should be added to a 500 mL flask to make 500 mL of a 0.300 M KOH solution.

0.75 × Va = 500 × 0.3

0.75Va = 150

Va = 150/0.75

Va = 200mL

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The United States experienced a decrease in the real GDP, high inflation, and arising unemployment rate.

The United States appeared to be entering a recession.A recession is a decline in economic activity, characterized by declining GDP, high unemployment rates, and increased unemployment benefits. Economic analysts and the media commonly use a two-quarter consecutive decline in real GDP as a definition of a recession.

The United States is considered to have entered a recession in the 1970s, which was characterized by an energy crisis, inflation, and recession. However, by the end of the decade, the economy had improved, and it entered into the 1980s with a strong economic performance.

The 1970s were a period of high inflation, low growth, and an oil crisis, which had a significant impact on the United States economy. Therefore, it can be concluded that The United States was in the middle of an economic boom before the 1970s recession and entered a recession in the 1970s due to a decrease in the real GDP, high inflation, and arising unemployment rate.

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Answer:

cotton

Explanation:

which is typically spun into fine yarn for mechanical weaving or knitting into cloth.

Answer:

Molten form

Explanation:

This is because they have mobile ions

Answer:

the answer is a

Explanation:

an electron contains a negative charge and like charges repel each other. Hence, in a atom the force of repulsion between the atoms away from each other. As a result a molecules atoms are as far away from each others as they can get .

A molecule's atoms as far away from each other as they can get because "Forces between electron pairs push the atoms apart".

So, option C is correct one.

Since, an electron is negative charge species revolve around the nucleus of an atom. So, when two atoms come close to each other in molecules there is repulsion occurs between negative charge electron .

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The specific heat capacity of the zinc metal, given that 2.40×10¹ g of zinc metal at 2.10×10¹ °C is added to the water is 0.27 J/gºC

First, we shall obtain the heat absorbed by the water when the zinc metal was added. This is shown below:

Q = MCΔT

= 5.60×10¹ × 4.184 × -2.1

= -492.0384 J

Now, we shall determine the specific heat capacity of the zinc metal. Details below:

Q = MCΔT

492.0384 = 2.40×10¹ × C × 76

492.0384 = 1824 × C

Divide both sides by 1824

C = 492.0384 / 1824

= 0.27 J/gºC

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The molar mass of a compound of 0.0401 moles weighing 21.6 grams is 538.65 g.

The molar mass of a substance is the mass in grams of one mole of the compound. In a substance, the amount of entities present e.g. atoms, molecules, ions, is defined as a mole.

∴M = m / n

M = molar mass

m = mass of a substance (in grams) = 21.6 grams

n = number of moles of a substance = 0.0401 moles

∴ 0.0401 moles of a compound have a mass of 21.6 g

∴  1 mole of the compound will have a mass of  21.6 / 0.0401

                                                         = 538.65 g (molar mass of compound)

So,  the molar mass of a compound of 0.0401 moles weighing 21.6 grams

is 538.65 g.

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\(Na^+\), \(Ca^2^+\), \(F^-\), and \(S^2^-\) are monoatomic ions, while \(Cr^2^+\), \(Hg^2^+\), \(ClO^-\), \(OH^-\), NO3-, and ClO3- are polyatomic ions. H₂O is not an ion; it is a neutral molecule.

Monoatomic ions are ions formed from a single atom, while polyatomic ions are ions formed from a group of atoms bonded together. Let's classify each of the ions you provided:

Monoatomic ions:

- Na+ (sodium ion)

- Ca2+ (calcium ion)

- F- (fluoride ion)

- S2- (sulfide ion)

Polyatomic ions:

- Cr2+ (chromium(II) ion) - This ion should be Cr2+, indicating a two-positive charge on the chromium ion. It is typically found in compounds with ligands to stabilize its charge.

- Hg2+ (mercury(II) ion) - This ion is a polyatomic ion due to the presence of two mercury atoms bonded together.

- H₂O (water molecule) - This is not an ion; it is a neutral molecule consisting of two hydrogen atoms bonded to one oxygen atom.

- ClO- (hypochlorite ion) - This is a polyatomic ion consisting of chlorine and oxygen atoms.

- OH- (hydroxide ion) - This is a polyatomic ion consisting of one oxygen and one hydrogen atom.

- NO3- (nitrate ion) - This is a polyatomic ion consisting of one nitrogen and three oxygen atoms.

- ClO3- (chlorate ion) - This is a polyatomic ion consisting of one chlorine and three oxygen atoms.

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Monoatomic ions consist of a single atom, while polyatomic ions consist of more than one atom. For example, Na+ is monoatomic, while NO3- is polyatomic.

To classify ions as either monoatomic or polyatomic, you need to know the nature of these ions. Monoatomic ions are ions made up of a single atom, while polyatomic ions are made of more than one atom. For example, Na+ is a monoatomic ion because it consists of a single sodium atom. On the other hand, NO3- is a polyatomic ion because it consists of one nitrogen atom and three oxygen atoms.

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Answer:

3185 metres

Explanation:

The average speed is calculated using the formula Speed = distance/time. The distance is in metres while the time is in seconds.

According to this question, reaches terminal velocity at 91 meters per second

Answer:

3185 meters

Explanation:

3185 meters

Answer:

a

Explanation:

Answer:

Top question is B

Bottom question is A

Explanation:

Answer:

top answer : B. intrusive igneous rock

bottom answer : A. extrusive igneous rock

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