Status: Answer saved Points possible: 1.00 sents a colligative property or a non-colligative property. Determine whether each Choose... non-colligative vapor pressure lowering colligative density non-colligative boiling point elevation colligative color non-colligative freezing point depression colligative melting point colligative Status: Answer saved Points possible: 1.00 the solid form of the substance. Choose... At the freezing point, the liquid form of a substance is completely replaced by is in equilibrium with has not started turning into

The ratio of neutrons to protons, or the N/Z ratio, plays a crucial role in determining a nucleus' stability. The range of N/Z ratios in which nuclei are stable is generally referred to as the belt of stability.

If the forces between the constituents of the nucleus are equal, an atom is stable. If these forces are out of balance or if the nucleus has an excessive amount of internal energy, an atom is unstable (radioactive).

Z = 104 for Rutherfordium, element 104. The isotopes 261Rf and 262Rf, having masses of 261 and 262, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

261Rf: N/Z = (261-104)/157 = 1.08

262Rf: N/Z = (262-104)/158 = 1.09

These N/Z ratios are a little bit higher than the average belt of stability values, which are about 1.0 for heavy nuclei. These isotopes are thought to be reasonably stable because they are close enough.

Z = 109 for Meitnerium, element 109. The isotopes 278Mt and 282Mt, with masses of 278 and 282, respectively, have the longest half-lives. Accordingly, N/Z ratios are:

278Mt: N/Z

To know more about neutrons visit:-

https://brainly.com/question/29248303

#SPJ1

Answer:

Homogeneous mixture.

Explanation:

On mixing with water, it dissolves completely in it, hence, being a homogenous mixture.

Hope it helps.

Strong base KOH, Sr(OH)2, NaOH, LiOH, Ca(OH)2. Strong acid HBr, HCl, H2SO4. Weak acid H3PO4. Weak base NH3.

To know more about acid please refer:

https://brainly.com/question/29796621

#SPJ4

Answer:

O High pressure/Low pressure

Explanation:

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. ... A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure.

The two types of pressure commonly referred to are high pressure and low pressure. Therefore option 3 is correct.

High pressure/Low pressure: This option correctly identifies the two main types of pressure. High pressure refers to conditions where the pressure is greater than atmospheric pressure, such as in compressed gases or in high-pressure systems.

Low pressure refers to conditions where the pressure is less than atmospheric pressure, such as in a vacuum or in areas of low atmospheric pressure, like the center of a weather system.

Know more about atmospheric pressure:

https://brainly.com/question/31634228

#SPJ2

Answer:

Exothermic

Explanation:

We as humans do not absorb heat. A good way to think about it is that when we workout we use energy from our body which causes our body temperature to rise. The energy used from food maintains our blood, respiration, and other systems in optimal condition. This requires energy from our body which ends up leaving the body as heat.

Answer:

A. Some of the original base remains in solution

Explanation:

A P E X

Answer:

0.492 J/g °C

General Formulas and Concepts:

Thermodynamics

Specific Heat Formula: q = mcΔT

Explanation:

Step 1: Define

Identify variables

[Given] q = 45.0 J

[Given] m = 8.10 g

[Given] ΔT = 24.3 °C - 13.0 °C = 11.3 °C

[Solve] c

Step 2: Solve for c

Step 3: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.491642 J/g °C ≈ 0.492 J/g °C

Answer: To counterbalance the negative charge on the electrons.

Explanation:

The plum pudding model

Thomson knew that atoms had an overall neutral charge. Therefore, he reasoned that there must be a source of positive charge within the atom

Thomson found that the path taken by the cathode ray could be bent towards a positive metal plate, and away from a negative metal plate. As a result, he reasoned that the particles in the cathode ray were negative.

: )

B. The movement of basketball players on a court of the following is an example of quantization

The process of translating continuously infinite values to a more manageable collection of discontinuous finite values is known as quantization. It involves estimating real-world values with a digital representation that places restrictions on a value's precision and range in the context of simulation and embedded computing.

As a general guideline, quantize to the note you've played that is the shortest; for example, if the phrase contains both eighth and quarter notes, use eighth note resolution. Keep in mind that many rhythms may really employ triplets; if things aren't working out, you may try utilising a triplet resolution.

learn more about quantization

https://brainly.com/question/24256516

#SPJ1

Answer: high pressure, high temperature water extraction

Explanation:

Answer:

C). high pressure, high temperature water extraction

Explanation:

Answer:

I'm not entirely sure what your study is about, but I can tell you that any research or study that contributes new knowledge or insights to a particular field can be valuable. It's important to identify gaps in the existing literature and to approach your research with a clear and focused question or objective. Ultimately, the value of your study will depend on the quality of your research and the significance of your findings.

the cut pieces will have their own north and south pole

Answer:

spinning

Explanation:

Answer:True

Explanation:

Answer:

True

Explanation:

Dashed - H2O

Gray - Hydrogen

Black - Oxygen

A water molecule is formed by the chemical bonding of two hydrogen atoms (H) and one oxygen atom (O). The chemical formula for water is H2O.

The two hydrogen atoms are covalently bonded to the oxygen atom, meaning they share electrons to form a stable molecule. The oxygen atom has a strong attraction for electrons, and it pulls the shared electrons closer to itself, giving it a partial negative charge. The hydrogen atoms, on the other hand, have a partial positive charge.

Learn more about water:https://brainly.com/question/28465561

#SPJ1

Answer:

1.  Solubility will increase, because as T increases the − Δ H ∘ R T −ΔH∘RT term becomes smaller therefore K will get larger.

2. To ensure the dissolution process was at equilibrium.

Explanation:

Given that;

ΔG°= -RTlnK

and

ΔG° = ΔH° - TΔS°

So;

-RTlnK = ΔH° - TΔS°

lnK = ΔH°/-RT - TΔS°/-RT

lnK = -(ΔH°/RT) + ΔS°/R

K = e^-(ΔH°/RT) + ΔS°/R

Hence, Solubility will increase, because as T increases the − Δ H ∘ R T −ΔH∘RT term becomes smaller therefore K will get larger.

2.

Since solubility is an equilibrium process, it means that some undissolved solute must be present in order to determine the solubility product correctly.

Solubility is the ability of the solute to dissolve in the solution. As temperature increases, the solubility increases, and the presence of solid ensure dissolution.

The Gibbs free energy is the change in the energy of a system from the energy present in the reactant towards the product formation.  

It is given as,

\(\rm \Delta G^{\circ}= \rm -RTlnK \\\\\rm \Delta G ^{\circ} = \Delta H ^{\circ} - T\Delta S ^{\circ}\)

Equating both equations we get:

\(\begin{aligned} \rm -RTlnK &= \rm \Delta H ^{\circ} - T\Delta S ^{\circ}\\\\\rm lnK &=\rm -(\dfrac{\Delta H ^{\circ}}{RT}) + \dfrac{\Delta S ^{\circ}}{R}\\\\\rm K &=\rm e^{-(\frac{\Delta H ^{\circ}}{RT}) + \frac{\Delta S ^{\circ}}{R}}\end{aligned}\)

Thus, the solubility of the substance increases with an increase in temperature.

The solubility product is estimated correctly by the equilibrium process that ensures the presence of the undissolved solute particles.

Therefore, 1. option A. solubility increases and 2. option B. to ensure the equilibrium process are the correct options.

Learn more about solubility here:

https://brainly.com/question/14092287

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{1.8 \times {10}^{24} }{6.02 \times {10}^{23} } = 2.990.. \\ \)

We have the final answer as

Hope this helps you

In the first dissociation of H2A:

molarity    H2A(aq)↔ (HA)^-(aq) + H^+(aq)

initial                0.05 m          0 m           0 m

change               -x                 +x               +x

equilibrium    0.05-x               x                 x

we can neglect X in [H2A] as it so small compared to the 0.05

so by substitution in Ka equation:

Ka1 = [HA][H] / [H2A]

2.2x10^-6 = X^2/0.05

X = √(2.2x10^-6)*(0.05)= 1.1x10^-7

X=   3.32x10^-4 m

∴ [H2A] = 0.05 - 3.32x10^-4 = 0.0497 m

[HA] = 3.32x10^-4 m

[H] = 3.32x10^-4 m

the second dissociation of H2A: when ka2 = 8.2x10^-9

                          HA-(aq)     ↔ A^2- (aq) + H+(aq)

at equilibrium   3.32x10^-4        y              3.32x10^-4

Ka2           = [H+][A^2-] / [HA]

8.2x10^-9 = Y(3.32x10^-4)/(3.32x10^-4)

∴y = 8.2x10^-9 m

∴[A] = 8.2x10^-9 m

PH= -㏒[H+]

   = -㏒(3.32x10^-4)= 3.479  

[A]=8.2x10^-9 m

[H2A] = 0.0497 ≈ 0.05 m

Answer:

Aà bhûtÿ ñhjkjłfd hÿrèërqw

Explanation:

The compound C4H6O4 can be classified as a dicarboxylic acid. In this case, the presence of four carbon atoms (C4) indicates that it is a relatively larger molecule.

The molecular formula also contains six hydrogen atoms (H6) and four oxygen atoms (O4). The presence of oxygen and carbon atoms suggests the possibility of carboxyl groups (-COOH) in the compound. Carboxyl groups are functional groups consisting of a carbonyl group (C=O) and a hydroxyl group (-OH) attached to the same carbon atom.

Since the compound contains four oxygen atoms, it is possible that it contains two carboxyl groups. A compound with two carboxyl groups is classified as a dicarboxylic acid. Dicarboxylic acids are organic compounds that have two carboxyl functional groups.

They are characterized by their ability to donate two protons (H+) and act as acids. Therefore, based on the molecular formula C4H6O4, the compound is classified as a dicarboxylic acid.

For more such questions on compound

https://brainly.com/question/15929599

#SPJ11

The mass percent of Cl in SiCl2I2 is 20.13%.

The chemical formula of SiCl2I2 can be broken down into its constituent elements, Si, Cl, and I. The total mass of the compound is the sum of the masses of these elements. Then, we can find the mass percentage of chlorine in SiCl2I2.
The mass of Si is 28.09 g/mol, the mass of Cl is 35.45 g/mol, and the mass of I is 126.9 g/mol. Therefore, the molar mass of SiCl2I2 is:
Molar mass of SiCl2I2 = (28.09 g/mol) + 2(35.45 g/mol) + 2(126.9 g/mol)
= 352.79 g/mol
To find the mass percentage of chlorine in SiCl2I2, we need to determine the mass of chlorine in the compound. There are two chlorine atoms in the molecule, so the mass of chlorine is:
Mass of Cl = 2(35.45 g/mol) = 70.9 g/mol
Now, we can calculate the mass percentage of Cl in SiCl2I2:
Mass percentage of Cl = (Mass of Cl / Molar mass of SiCl2I2) × 100%
= (70.9 g/mol / 352.79 g/mol) × 100%
= 20.13%
for more questions on mass

https://brainly.com/question/24191825

#SPJ8

Daria had some beach sand with her. The sand has a 72 gramme mass. She calculated the volume using the graduated cylinder below. The graduated cylinder contains 15 mL of sand.

The volume of the sand is calculated using the graduated cylinder below. The sand's bulk is specified as 72 grammes.

We can use the water displacement method to calculate the volume of the sand. Following is a description of how to estimate the amount of sand using the water displacement method:

The graduated cylinder of water should first be measured for volume.

The graduated cylinder's water volume should then be measured after adding the sand to it. The volume of water increases by the same amount.

Let's use the provided problem to implement this approach.

In the beginning, there is 10 mL of water in the graduated cylinder. The graduated cylinder contains 25 mL of water once the sand has been added.

The amount of sand is therefore equal to the difference between the two volumes, which is: Sand volume equals final water volume minus initial water volume (25 - 10 = 15 mL).

As a result, there are 15 mL of sand in the graduated cylinder.

Answer : 15

For more such questions on volume, click on:

https://brainly.com/question/14197390

#SPJ8

Answer: you have to talk to someone who wont mind wanting to wanting to like you a lot like that.

Explanation:  I wish I could be able to talk to someone who would want to get to like me like that, so its a very relatable situation.

Answer:

\(M=0.638M\)

Explanation:

Hello!

In this case, since the molarity of a solution is calculated by diving the moles of solute by the volume of solution in liters, we first compute the moles of barium hydroxide in 35.5 g as shown below:

\(n=35.5g Ba(OH)_2*\frac{1molBa(OH)_2}{171.34gBa(OH)_2}\\\\n=0.207mol\)

Then, the liters of solution:

\(V=325mL*\frac{1L}{1000mL} =0.325L\)

Finally, the molarity turns out:

\(M=\frac{0.207mol}{0.325L}\\\\M=0.638M\)

Best regards!

It is a salt formed from the potassium cation (K+) and the phosphate anion (H2PO4-). This salt is considered monobasic because it contains one replaceable hydrogen ion (H+).

KH2PO4 is actually potassium dihydrogen phosphate, not potassium phosphate monobasic. Potassium phosphate monobasic, or monopotassium phosphate, is correctly represented by the chemical formula KH2PO4. It is a salt formed from the potassium cation (K+) and the phosphate anion (H2PO4-). This salt is considered monobasic because it contains one replaceable hydrogen ion (H+).

On the other hand, potassium dihydrogen phosphate, or K2HPO4, is a different compound. It is formed from the potassium cation (K+) and the hydrogen phosphate anion (HPO4^2-). This compound is considered dibasic because it contains two replaceable hydrogen ions (H+).

Therefore, KH2PO4 is correctly identified as potassium phosphate monobasic, while K2HPO4 is potassium dihydrogen phosphate.

For more question on cation

https://brainly.com/question/14309645

#SPJ8

Answer:

3 HBr + Al(OH)₃ ⇒ AlBr₃ + 3 H₂O

Explanation:

Let's consider the unbalanced equation for the reaction that takes place when hydrobromic acid reacts with aluminum hydroxide. This is a neutralization reaction, in which an acid reacts with a base to produce a salt and water.

HBr + Al(OH)₃ ⇒ AlBr₃ + H₂O

First, we will balance Br atoms by multiplying HBr by 3.

3 HBr + Al(OH)₃ ⇒ AlBr₃ + H₂O

Finally, we get the balanced equation by multiplying H₂O by 3.

3 HBr + Al(OH)₃ ⇒ AlBr₃ + 3 H₂O

Answer:

A: The reaction is exothermic

C: The equation shows that 891 kJ of energy are released as a product.

E: The graph shows that the reactants have greater potential energy than the products.

Explanation:

The statement about the reaction is true:

A: The reaction is exothermic

C: The equation shows that 891 kJ of energy is released as a product.

E: The graph shows that the reactants have greater potential energy than the products.

Potential energy is the energy that is saved in the body. It is used in the work and when convert into kinetic energy.

A moving item fundamentally possesses kinetic energy. Kinetic energy would therefore be created as a result of an object moving or an elastic band being released since the released object exhibits motion.

Therefore, the correct option is A: The reaction is exothermic, C: The equation shows that 891 kJ of energy is released as a product, and E: The graph shows that the reactants have greater potential energy than the products.

To learn more about potential energy, refer to the link:

https://brainly.com/question/15764612

#SPJ2

The answer is approximately 1332.75 g of ice can be melted if 24.9 kJ of thermal energy are added at the freezing point.

Thermal energy refers to the energy contained within a system that is responsible for its temperature.

The heat required to melt a substance is equal to the enthalpy of fusion of that substance times its mass. The molar enthalpy of fusion of ice is 333.55 J/mol, so the amount of heat required to melt 1 mol of ice is 333.55 J.

To find the mass of ice that can be melted with 24.9 kJ of thermal energy, we first need to convert the energy from kJ to J:

24.9 kJ = 24.9 x 10^3 J = 24900 J

Next, we divide the amount of thermal energy by the molar enthalpy of fusion of ice to find the number of moles of ice that can be melted:

24900 J / 333.55 J/mol = 74.22 mol

Finally, we multiply the number of moles of ice by its molar mass to find the mass of ice in grams:

74.22 mol x 18.02 g/mol = 1332.75 g

Therefore, The answer is approximately 1332.75 g of ice can be melted if 24.9 kJ of thermal energy are added at the freezing point.

Learn more about thermal energy here: brainly.com/question/934320

#SPJ1