what is emitted in the nuclear transmutation, 2713 al(n, ?) 2411 na? a neutron an alpha particle a proton a gamma photon a beta particle

Answer: a substance

Explanation:

A molecule is the smallest part of a substance

Answer:

Vertically Shrunk by a factor of 1/6

Explanation:

Parent Formula: f(x) = a(bx - c) + d

a - vertical shrink/stretch and x-reflections

b - horizontal shrink/stretch and y-reflections

c - horizontal movement left/right

d - vertical movement up/down

Since we are only modifying a, we are dealing with vertical shrink/stretch:

Since a < 1 (1/6 < 1), we are dealing with a vertical shrink of 1/6.

Since a > 0 (1/6 > 0), we do not have a reflection over the x-axis.

Answer:Vertically compressed by a factor of 6

Explanation:

Answer:

36.04g H2O

Explanation:

2 moles H2O converted into grams using the mass of a mole of water as grams (1.01 x 2 + 16.00 = 18.02g = 1 mole h2o) is 36.04g

i can try to explain further if you want?

Recall Charles law

So

#a

Volume is halved means Temperature is halved

#b

Volume is doubled means temperature is doubled

#c

Volume is tripled means temperature is trippled

Answer:

Explanation:

The relation between temperature and volume at constant pressure is given by Charles Law.

Scenario 1 : Volume is halved

⇒ Let initial volume be V

⇒ \(\frac{V}{17} = \frac{0.5V}{T}\)

⇒ T = 17 × 0.5

⇒ T = 8.5 °C

Scenario 2 : Volume is doubled

⇒ \(\frac{V}{17} = \frac{2V}{T}\)

⇒ T = 17 × 2

⇒ T = 34 °C

Scenario 3 : Volume is tripled

⇒ \(\frac{V}{17} = \frac{3V}{T}\)

⇒ T = 17 × 3

⇒ T = 51 °C

The correct answer is increases, increases.

Solid, liquid, and gas solubility:

Changes in pressure hardly ever affect the solubility of solids or liquids. However, gases are highly reliant on the system's pressure. Liquids and gases combine to generate solutions.

The solubility of the molecule increases as the number of hydroxyl groups increases since there will be more hydrogen bonding as a result.

As the number of carbon atoms rises, alcohol's solubility decreases since the carbon chain is hydrophobic by nature. The hydrophobic group expands as the molecule's polarity decreases. As a molecule's polarity rises, its solubility gradually declines.

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As per the given statements : 1. Particle A is an atom because it has protons, electrons and neutrons.2. A, B and C are all particles of the same element. No, A, B and C are not the particles of same element as there no. of electrons differ. 3.Particles A and C are isotopes of the same element. Yes.

The smallest unit of matter in which it can be broken without exhibiting any charged particle is termed as atom. atom is made up of three particles of which Proton (+ivly charged) and electron (-ivly charged) are charged particles while neutron is a neutral particle , doesn't have any charge.

They are the particles of same element and have same no . of protons and electrons i.e. is same atomic number but they differ in no. of neutrons.

So bcz of the above reason in statement three Particles A and C are isotopes of the same element is correct.

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Magnesium is not a compound

Answer:

Accuracy and precision are both important concepts in measurement, but they refer to different aspects of the measurement process.Accuracy refers to how close a measured value is to the true or expected value. In other words, accuracy is a measure of how well a measurement reflects reality. A measurement can be accurate even if it is not precise, as long as it is close to the true value.Precision, on the other hand, refers to the level of consistency or reproducibility of a set of measurements. In other words, precision is a measure of how well a measurement can be replicated. A measurement can be precise even if it is not accurate, as long as the values are consistent and repeatable.To illustrate the difference between accuracy and precision, consider the example of a dartboard. If a person throws several darts and they all land in the same spot, that person has high precision. However, if the darts all land far away from the bullseye, they have low accuracy. If a person throws several darts and they are spread out across the board, that person has low precision. However, if the darts are all clustered around the bullseye, they have high accuracy.In summary, accuracy is a measure of how close a measurement is to the true value, while precision is a measure of how consistent or reproducible a set of measurements is.

Answer:

Explanation:

To solve this problem, we can use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

At STP (standard temperature and pressure), the pressure is 101.325 kPa and the temperature is 273.15 K.

We can use this information to find the initial number of moles of air in the cylinder:

PV = nRT

(101.325 kPa) (5.50 L) = n (8.314 J/mol·K) (273.15 K)

n = 0.226 mol

Now, we can use the same equation to find the new temperature, assuming the number of moles of air remains constant and the volume of the cylinder is unchanged:

PV = nRT

(99.5 kPa) (5.50 L) = (0.226 mol) (8.314 J/mol·K) T

T = (99.5 kPa) (5.50 L) / (0.226 mol) (8.314 J/mol·K)

T = 301.8 K

Therefore, the new temperature of the air sample in Celsius is:

T = 301.8 K - 273.15 K = 28.65°C

So the new temperature is 28.65°C.

Answer:

B.

Explanation:

The most abundant element in the Earth's crust is oxygen, making up 46.6% of Earth's mass.

Answer:

a. 2HCl + 1Mg(OH)2 → 1MgCl2 + 2H2O

b. 1 mol MgCl2/ 1 mol Mg(OH)2

1 mol MgCl2/ 2 mol HCI

Explanation:

a. The reaction of an acid (HCl) with a base (Mg(OH)2) produce water (H2O) and the salt (MgCl2):

_HCl + _Mg(OH)2 → _MgCl2 + _H2O

To balance the Cl:

2HCl + _Mg(OH)2 → _MgCl2 + _H2O

To balance the oxygen:

2HCl + _Mg(OH)2 → _MgCl2 + 2H2O

The reaction is now balanced

2HCl + 1Mg(OH)2 → 1MgCl2 + 2H2O

b. Based on the balanced reaction, the moles ratios are:

1 mol MgCl2/ 1 mol Mg(OH)2

1 mol MgCl2/ 2 mol HCI

Answer: false

Explanation:

There are 2.15 cm between each 100 mL mark. The formula; is used to determine a cylinder's molarity volume. V = πr^2h.

The number of moles of a solute per liter of a solution is known as molarity. The molar concentration of a solution is another name for molarity.

The term "total moles of a solute contained in a kilogram of a solvent" is used to describe molality. Molal concentration is another name for molality. It gauges the amount of solute in a solution.

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Answer:

Theodor Schwann

Explanation:

The classical cell theory was proposed by Theodor Schwann in 1839. There are three parts to this theory

Answer:

Hess’s Law describes how the __Heat__ energy of a reaction consists of the _Enthalpy__ of the energy changes of the individual step reactions

Explanation:

Hess law is a legendary law which is given by

\(\\ \rm\Rrightarrow ∆H_{net}=\sum \delta H_r\)

I'm pretty sure ita A. acceleration

Answer:

it's a friction force

Answer:

Doubled.

Explanation:

The relationship between the temperature and the volume of a gas at a constant pressure can be described using Charles' law:

That means that the temperature and the volume of a gas are directly proportional: The higher the temperature, the higher the pressure. If one of those factors is increased twofold, the other one will be increased twofold as well.

Answer:

amphibians

Explanation:

because frogs have to stay in water while tadpole then they come to land

Answer:

Amphibians

Explanation:

It is amphibians.

The speed of the particles rises with the temperature of the solid, liquid, or gas. The particles slow down with decreasing temperature.

A liquid can turn into a solid if it is cooled down far enough.

The average kinetic energy of the molecules falls as a liquid cools.

The liquid eventually turns into a solid when the quantity of heat removed is sufficient to cause the molecules to be attracted to one another.

Freezing is the process of transitioning from a liquid to a solid.

It loses thermal energy when the liquid cools. Its constituent particles therefore decelerate down and converge.

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Answer:

Because it is the same element but has different atomic mass

Answer:

Ron and Hermoine

Explanation:

They always fought over petty things, but at the end, they did end up together!

(Answer for your question about love and friendship being a central theme in Harry Potter and the Philosopher's stone)

*ALSO, MY ANSWER MIGHT BE WRONG* so be sure to use a pencil just in case!

Galvanic cells or voltaic cells can generate electricity through the use of a spontaneous reaction.

A galvanic cell or voltaic cell can be described as an electrochemical cell in which electricity is generated from spontaneous Oxidation-Reduction reactions.

A common apparatus consists of two different metals or electrodes, each immersed in different beakers containing their respective ion solution, They are connected by a salt bridge or a porous membrane.

Galvanic cells carry the spontaneous redox reactions but have been designed to harness the energy generated from the said reaction. The electromotive force of the cell can be defined as the difference between the half-cell potentials which are measured by the two electrodes in the electrolyte.

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To determine the value of ∆Hrxn for the reaction, we can use the equation:

∆Hrxn = q / n

where q is the heat of the reaction, n is the number of moles of reactants, and ∆Hrxn is the change in enthalpy of the reaction.

We can use the equation for calculating heat:

q = mc∆T

where q is the heat, m is the mass of the solution, c is the specific heat of the substance, and ∆T is the change in temperature.

The mass of the solution is equal to the volume of the solution times the density:

m = V * d

Plugging this equation into the equation for calculating heat, we get:

q = (V * d) * c * ∆T

We can use the values given in the problem to solve for q:

q = (0.200 L * 1.00 g/mL) * (4.18 J/g°C) * (23.48°C - 22.15°C)

q = 4.32 J

To determine the value of ∆Hrxn, we need to know the number of moles of reactants. The concentration of the HCl solution is 0.2 M, so the number of moles of HCl is:

n = (0.200 L) * (0.200 mol/L) = 0.040 mol

Plugging this value into the equation for ∆Hrxn, we get:

∆Hrxn = q / n = (4.32 J) / (0.040 mol) = 108 J/mol

Therefore,  ∆Hrxn=108 J/mol

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Option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

The long-run equilibrium condition for perfect competition is that price (P) is equal to average total cost (ATC), which is also equal to marginal cost (MC), and marginal revenue (MR).

Option (d), P=ATC=MR=MC, best represents the long-run equilibrium condition for perfect competition. In perfect competition, firms operate at the minimum point of their average total cost curve, where price equals both average total cost and marginal cost. This condition ensures that firms are earning zero economic profit and are producing at an efficient level.

In the long run, if firms are earning economic profit, new firms will enter the market, increasing competition and driving prices down. Conversely, if firms are experiencing losses, some firms may exit the market, reducing competition and causing prices to rise. This process continues until firms reach a state where price equals average total cost, marginal cost, and marginal revenue, ensuring a long-run equilibrium.

Therefore, option (d), P=ATC=MR=MC, accurately represents the long-run equilibrium condition for perfect competition, reflecting the balance between price and cost for firms operating in a competitive market.

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Answer:

a metal is an element that readily forms positive ions (cations) and has metallic bonds

coke is a strong stimulant made from coca leaves

Answer:

HEAT OF COMBUSTION PER GRAM OF OCTANE IS 1723.08 J OR 1.72 KJ/G OF HEAT

HEAT OFF COMBUSTION PER MOLE OF OCTANE IS 196.4 KJ/ MOL OF HEAT

Explanation:

Mass of water = 100 g

Change in temperature = 28.78 °C - 21.36°C = 7.42 °C

Heat capcacity of water = 4.18 J/g°C

Mass of octane = 1.8 g

Molar mass of octane = C8H18 = (12 * 8 + 1 * 18) g/mol= 96 + 18 = 114 g/mol

First is to calculate the heat evolved when 100 g of water is used:

Heat = mass * specific heat capacity * change in temperature

Heat = 100 * 4.18 * 7.42

Heat = 3101.56 J

In other words, 3101.56 J of heat was evolved from the reaction of 1.8 g octane with water.

Heat of combustion of octane per gram:

1.8 g of octane produces 3101.56 J of heat

1 g of octane will produce ( 3101.56 * 1 / 1.8)

= 1723.08 J of heat

So, heat of combustion of octane per gram is 1723.08 J

Heat of combustion per mole:

1.8 g of octane produces 3101.56 J of heat

1 mole of octane will produce X J of heat

1 mole of octane = 114 g/ mol of octane

So we have:

1.8 g of octane = 3101.56 J

114 g of octane = (3101.56 * 114 / 1.8) J of heat

= 196 432.13 J

= 196. 4 kJ of heat

The heat of combustion of octane per mole is 196.4 kJ /mol.

Mass of water = 100 g

Change in temperature = 28.78 °C - 21.36°C = 7.42 °C

Heat capcacity of water = 4.18 J/g°C

Mass of octane = 1.8 g

Molar mass of octane = C8H18 = (12 * 8 + 1 * 18) g/mol= 96 + 18 = 114 g/mol

First is to calculate the heat evolved when 100 g of water is used:

Heat = mass * specific heat capacity * change in temperature

Heat = 100 * 4.18 * 7.42

Heat = 3101.56 J

A weak acid is an acid that does not completely dissociate into ions when it is dissolved in water. In other words, only a fraction of the weak acid molecules ionize to release hydrogen ions (H+). This limited ionization leads to a lower concentration of hydrogen ions in the solution compared to a strong acid.

Weak acids exhibit incomplete dissociation due to the equilibrium established between the undissociated acid molecules and the dissociated ions. This equilibrium is governed by the acid's dissociation constant (Ka), which represents the extent of ionization. The equilibrium favors the undissociated acid form, and only a small fraction of the acid molecules dissociate into ions.

The molarity of a weak acid and the molarity of the hydrogen ion (H+) are not the same because the concentration of hydrogen ions depends on both the dissociation constant (Ka) of the acid and the initial concentration of the weak acid. The molarity of the weak acid represents the concentration of the undissociated acid molecules, whereas the molarity of the hydrogen ion represents the concentration of the dissociated ions. Since only a fraction of the weak acid molecules dissociate into ions, the molarity of the hydrogen ion is lower than the molarity of the weak acid.

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