what is the concentration of a solution, in parts per million, if 3.064 g of NaCl is dissolved in 1159.36 g of solution

Answer:

D

Explanation:

Cell membrane, also called plasma membrane, thin membrane that surrounds every living cell, delimiting the cell from the environment around it.

I'm pretty sure it's A)

Answer: C. UVA rays cause premature aging and UVB rays cause burning

Explanation: Ultraviolet radiation causes DNA changes in the skin, leading to premature aging and skin cancer. There are three kinds of UV light: UVA light. This form of solar radiation damages skin at all levels—from the surface layer (epidermis) down deep into the dermis.

these are the correct answers

Answer:Question

Select the correct answer. Sami was blowing soap bubbles in his room where the temperature was 23 °C and the pressure was constant. He blew a soup bubble of volume 45 mL. The bubble suddenly escaped from the window where the temperature outside was 12 °C. Explain what will happen to the soap bubble? The volume of the soap bubble will increase to 46.73 mL. The volume of the soap bubble will increase to 86.25 mL. The volume of the soap bubble will decrease to 23.47 mL. The volume of the soap bubble will decrease to 43.33 mL.​

Explanation:

Question

Select the correct answer. Sami was blowing soap bubbles in his room where the temperature was 23 °C and the pressure was constant. He blew a soup bubble of volume 45 mL. The bubble suddenly escaped from the window where the temperature outside was 12 °C. Explain what will happen to the soap bubble? The volume of the soap bubble will increase to 46.73 mL. The volume of the soap bubble will increase to 86.25 mL. The volume of the soap bubble will decrease to 23.47 mL. The volume of the soap bubble will decrease to 43.33 mL.​

The two ways in which the physical state of matter can be changed are melting and freezing.

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Answer:

Higher temperatures means more energy, and a solid phase means the particles are close together. This results in highly energized particles that bump into the particles close to them, who in turn bump into more particles.

Explanation:

waves move faster at higher temperatures and in a solid phase there is more energy and the particles are farther apart there is less energy and the particles are closer together there is less energy and the particles are farther apart there is more energy and the particles are closer together.

The waves move faster at higher temperatures and in a solid phase because there is more energy and the particles are closer together.

A wave can be described as a medium which transports energy without causing net particle movement. Elastic deformation, pressure change, electric along with magnetic intensity, electric potential, or temperature can all be examples.

The quantitative property that's also transferred to a body or a physical system, recognizable in the work performance as well as in the form of heat and light, is called energy.

Temperature is the measurement of a body's degree of hotness or coolness.

The faster the wave is conveyed, the greater the particle interactions are. In general, sound travels quicker through solids than through liquids, and faster through liquids than through gas. Because warmer particles move at a higher pace, the temperature actually speeds up to sound.

Therefore, the correct answer will be option (d).

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A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

The pair of substances that are most likely to form a homogeneous solution is B. H2O and CH3OH. A homogeneous mixture is one in which the components are evenly distributed throughout the mixture. These types of solutions have uniform properties and the same composition throughout.A heterogeneous mixture is one in which the components are not evenly distributed. This means that the mixture has distinct regions or phases that are visibly different from one another. The following are the most likely pairs of substances to form a homogeneous solution:A) F2 and C2H5OH (Heterogeneous mixture)B) H2O and CH3OH (Homogeneous mixture)C) LiCl and C10H20 (Heterogeneous mixture)D) CH4 and C2H5OH (Heterogeneous mixture).

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Answer:

1.03 × 10¹

Explanation:

The decimal point is after the first non-zero digit number. The decimal or the number is multiplied by a 10 with an exponent.

The metal hydroxide that should be soluble in water among LiOH, CuOH, AgOH, Cu(OH)₂, and TlOH is LiOH.

1. LiOH: Lithium hydroxide (LiOH) is an alkali metal hydroxide, and alkali metal hydroxides are generally soluble in water. So, LiOH is soluble.

2. CuOH: Copper(I) hydroxide (CuOH) is a transition metal hydroxide, which are typically insoluble. Therefore, CuOH is not soluble.

3. AgOH: Silver hydroxide (AgOH) is also a transition metal hydroxide and is insoluble in water.

4. Cu(OH)₂: Copper(II) hydroxide (Cu(OH)₂) is another transition metal hydroxide and is insoluble in water.

5. TlOH: Thallium hydroxide (TlOH) is also a transition metal hydroxide, and like most transition metal hydroxides, it is insoluble in water.

In conclusion, among the given metal hydroxides, LiOH is soluble in water.

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Answer:

Avogadro's Law; 15.1L

Explanation:

Boyle's Law- Pressure and volume are inversely related, so an increase in pressure= decrease in volume. We see this in the equation P1V1=P2V2.

Charle's Law- Gas expands/increases in volume when temperature increases, so they are proportional. We see this in the formula \(\frac{V1}{T1} = \frac{V2}{T2}\).

Guy-Lussac's Law-  As temperature increases, pressure increases, so they are proportional. We see this in the formula \(\frac{P1}{T1} = \frac{P2}{T2}\).

Avogadro's Law- There are equal amount of volume have an equal amount of moles, so they are proportional. We see this in the formula \(\frac{V1}{n1} = \frac{V2}{n2}\).

Plugging in the values based on Avogadro's Law, we'll have:

\(\frac{36.5}{2.9} = \frac{V2}{1.2}\)

12.6 = \(\frac{V2}{1.2}\)

12.6 x 1.2 = V2

15.1L =V2

The empirical formula of the solvent is CH4.

Relative number of atoms

Of H= 25/1 = 25

Of C= 75/12 = 6.25

What is a solvent?

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Answer:

bacic

Explanation:

it is very soluble in water

First, we'll look at the ideal gas equation,

PV = nRT

The temperature and pressure are said to be constant; Additionally, R is a constant already. Along these lines, we get:

V = constant * n

The direct proportional equation is as follows: As a result, we get:

V/n = constant

V₁/n₁ = V₂/n₂

Replace V₂ with the qualities and address.

V₂ = (4 * 1.48) / 0.864

V₂ = 6.85

In the end, 6.85 Liters of gas must be present, so we must add:

6.85 - 4 = 2.85 liters

The volume of a gas is directly proportional to its mole volume at a fixed temperature and pressure.

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Q- At 4.00 L, an expandable vessel contains 0.864 mol of oxygen gas. How many liters of oxygen gas must be added at constant temperature and pressure if you need a total of 1.48mol of oxygen gas in the vessel?

Catalytic hydrogenation is classified as a 1,2-addition reaction. in this experiment, hydrogen was added to the alkene of 1-decene in a syn (cis) fashion.

a) Syn: A process by which all new bonds are formed on one face of the reactant molecule during an addition reaction.

b) the role of platinum metal (pt) in this syn addition reaction is to be a catalyst and be a hydrogen quencher.

An addition reaction in organic chemistry is an organic process whereby two or more molecules come together to form a larger one (the adduct). Because they also have double-bond nature, molecules containing carbon—hetero double bonds, such as carbonyl (C=O) or imine (C=N) groups, can be added.

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Answer:

Ice cubes, glass of tea, and butter

Explanation:

Like it said in the hint, the molecules will only speed up if they gain heat. This means in order for the object to heat up it will have to have a temperature that is less than the temperature in the room. Ice cubes, glass of tea, and butter are the three objects that have a temperature less than 72 degrees so when they are placed in the 72 degrees room they will heat gain heat (therefore making the molecules move faster)

Answer:

i think it might be separation by density

Explanation:

Answer:

B: Sort by density

Btw im not copying the person above me. I am 98% Sure its density

Answer:

i think its the first one

Explanation:

i could be wrong

Answer:

B. frozen or mummified fossils

This is the correct answer :)

Answer:

B the answer

Explanation:

frozen or mummified fossils

The third law of thermodynamics describes the entropy of a: solid.

The third law of thermodynamics states that the entropy of a pure crystalline substance approaches zero as the temperature approaches absolute zero (0 Kelvin or -273.15 degrees Celsius). This law implies that at absolute zero, a perfectly ordered and pure crystalline solid will have zero entropy.

The third law of thermodynamics is not specific to liquids or gases but applies to solids. In a solid, the molecules are highly ordered and have fixed positions in a regular lattice structure. As the temperature decreases towards absolute zero, the thermal motion of the molecules reduces, and the system becomes more ordered, resulting in a decrease in entropy.

In contrast, liquids and gases have higher entropy compared to solids at absolute zero because their molecules have more freedom of movement and are not as tightly arranged. Therefore, the third law of thermodynamics specifically addresses the entropy of solids and does not apply to liquids or gases.

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The major organic product of the reaction is that methoxide ion replace the bromide ion.

A nucleophilic substitution reaction occurs when an organic compound's leaving group, which is frequently composed of halide groups or other electron-withdrawing groups, interacts with a nucleophile.

The contact between the two species, the organic compound and the nucleophile, determines how quickly this reaction proceeds.

The nucleophile attacks the substrate from the rear in order for this reaction to continue. The angle of the nucleophile's approach to the supplied substrate with respect to the carbon-leaving group bond is 180. Through a transition state, the carbon-nucleophile bond forms and the carbon-leaving group bond dissolves simultaneously.

It operates through the \(SN_{2}\) mechanism and is an illustration of the nucleophilic replacement of primary alkyl bromide. It involves configuration inversion. Methoxide ion replaces bromide ion in this process.

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Answer:

1.a

2.c

hope helps

Explanation:

mark

pa

Answer: 2.26

Explanation:

The heat of the vaporization of water is equal to 2.33 KJ/g.

The specific heat capacity can be explained as the quantity of heat required to raise the temperature in one unit of substance by 1 degree Celcius.

The specific heat can be represented in terms of gained or lost heat:

Q = mCΔT

The heat of vaporization can be described as the amount of heat required to turn one gram of a liquid into a vapor, without an increase in the temperature of the liquid.

Given, the amount of heat gained by water, Q =  172.58 kJ

The change in the temperature = 112.5 - 88.3 = 24.2 °C

The specific heat capacity of the water = 4.184 J/g°C

The mass of the water, m = 74 g

The heat of vaporization of water H = q/m

H = 172.58/74

H = 2.33 KJ/g

Therefore,  the heat of the vaporization of water is equal to 2.33 KJ/g.

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The distance between two ions can fuse, as a result of strong nuclear interactions  3.125 eV.

Determining the work required to bring two ions within a specific distance is a complex task that requires knowledge of both their electric charges and the forces between them.

In this case, the deuterium ion and the tritium ion both have a charge of +e, so they will experience an attractive electrostatic force as they come closer to each other. However, the precise amount of work required to bring them within a certain distance cannot be calculated without knowing the exact nature of the forces between the ions, including any quantum mechanical interactions that may come into play. The answer would likely require a detailed quantum mechanical calculation to be performed, which is beyond the scope of this response.

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A deuterium ion and a tritium ion each have charge +e. What work is necessary to be done on the deuterium ion in order to bring it within 1.13·10–14 m of the tritium ion? This is the distance within which the two ions can fuse, as a result of strong nuclear interactions that overcome electrostatic repulsion, to produce a helium-5 nucleus. Give your answer in units of in electron-volts.

Answer: C

Explanation:

if the atom are maintained then the equation has to be balanced

Answer: C

Explanation:

Don’t trust the other person it’s not A

*view photo for answer*

pay attention! the answer choices aren't always in the same order!