What can element automatic number tell you about its state of matter

Answer:

The plant and animal cells are eukaryotic and contain well developed cellular organelles. 

The cell membrane, cytoplasm, chromosomes, and mitochondria are the structures that are present in both the plant and the animal cells. 

The cell wall and chloroplast are present only in the plant cell. 

Mitochondria

Because it is right next to the nucleau

We have that The  the mass change when the copper coin was made to look silver is an increase in mass

Correct option C

It increased.

It is important to note that the copper coin after its cutting into shape will have a specific mass or weight and the silver coating solution will also have a net value of mass or weight

Therefore

The  the mass change when the copper coin was made to look silver is an increase in mass

Correct option C

It increased.

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Answer: the best option to answer the question is letter C, "All of these"

Explanation:

The question requires us to choose the best option about the plateau (flat) sections of heating curve provided.

The graph provided shows the change in temperature in function of time, considering a solid substance (at the beginning of the curve) that is being heated. When enough heat is provided to this solid, it reaches the temperature where the solid can transform into a liquid - its melting point. At this point, the phase change occurs and the temperature does not increase. On the other hand, the substance needs to absorb energy to "promote" the phase change. This transformation happens at the first plateau shown in the graph.

Increasing the temperature, the liquid now is being heated until it reaches the temperature where it can transform from liquid to gas - the boiling point. Similarly to the previous flat section, the phase transformation (liquid -> gas) will occur at a constant temperature and the susbtance needs to absorb enough energy to change its physical state.

Further increasing the heat, the temperature of the substance in gas form is now increasing.

Considering the explanation above, we can say that at the flat sections of the graph, there is a phase transformation ocurring, the temperature does not increase (it is kept constant during the phase transformation) and the substance is absorbing heat to "promote" the change transformation.

Therefore, the best option to answer the question is letter C, "All of these".

Answer:

A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds.

Explanation:

You have to put energy into a molecule to break its chemical bonds. The amount needed is called the bond energy. After all, molecules don't spontaneously break

Answer: 55.5 oC is 0.014 atm (3rd decimal point)

Explanation:

The Clausius-Clapeyron equation is given as:

ln(P2/P1) = -(ΔH_vap/R) * (1/T2 - 1/T1)

where:

P1 = vapor pressure at temperature T1

P2 = vapor pressure at temperature T2

ΔH_vap = enthalpy of vaporization

R = gas constant = 8.314 J/(mol*K)

Converting the enthalpy of vaporization to J/mol:

ΔH_vap = 35.2 kJ/mol = 35,200 J/mol

Converting temperatures to Kelvin:

T1 = 64.7 + 273.15 = 337.85 K

T2 = 55.5 + 273.15 = 328.65 K

Substituting the values into the equation and solving for P2:

ln(P2/1 atm) = -(35,200 J/mol / 8.314 J/(mol*K)) * (1/328.65 K - 1/337.85 K)

ln(P2/1 atm) = -4.231

P2/1 atm = e^(-4.231)

P2 = 0.014 atm

Therefore, the vapor pressure for methanol at 55.5 oC is 0.014 atm, to the third decimal point.

Answer: transmits yellow light

Explanation:

The proportion of oxygen to hydrogen by mass in the water is 8 : 1

18 g of water contains 16 g of O.

Therefore,

2.16 g of water will contain = (2.16 × 16) / 18 = 1.92 g of O

Mass of H = mass of water – mass of O

Mass of H = 2.16 – 1.92

Mass of H = 0.24 g

Proportion = oxygen / hydrogen

Proportion = 1.92 / 0.24

Proportion = 8 : 1

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Sedimentation, filtration, and coagulation are the treatments that will help remove contaminants from minerals or from the pipes carrying water from a source.

Sedimentation is a process in which suspended particles settle out of water. It is one of the most basic techniques for removing particles from water. As particles settle, they become trapped in the bottom of a container or settle to the ground in an outdoor setting

Filtration is a method of removing particles from a fluid. It is a physical or chemical separation method that separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.

Coagulation is the process of using chemicals to remove contaminants from water. By creating a chemical reaction, coagulation destabilizes particles and causes them to clump together. This helps to remove the contaminants from the water.

Disinfection is the process of eliminating or destroying pathogens that cause infection. Disinfection eliminates harmful microorganisms by destroying or inactivating them. The disinfectant is a chemical or physical agent that is used to destroy or inactivate harmful microorganisms.

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Answer:

Nickel Nitrate

Answer:

Both metals and non-metals when burnt in oxygen form their oxides. Oxides of metals are basic in nature and oxides of non-metals are acidic in nature.

Answer:

five(5) of them

sorry if I'm wrong

Metal extraction is a reduction process because the extracted metal is in a bound state and has a positive valence. The addition of electrons converts cations into atoms or metals.

Metal extraction is always a reductive process. Metals have positive valences in the bound state, and cations are converted to atoms or metals by the addition of electrons. So by definition it is a reductive process.

Example - Mⁿ⁺ + ne⁻ → M

Mining is the process of extracting metal ores buried deep underground. Metal ores occur in varying amounts in the Earth's crust. By extracting metals from ores, minerals in the ground can be used. Ore is very different from the finished metal you see in buildings and bridges. Ore consists of the desired metallic compounds and impurities and a geological material called gangue. The recovery of metals and their separation takes place in several main steps.

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1. C6H10O5 + 6O2 → 6CO2 + 5H2O

2. MgO + H2O → Mg(OH)2

3. 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

1. The complete, balanced chemical reaction for the burning of cellulose (C6H10O5), or wood, is:

C6H10O5 + 6O2 → 6CO2 + 5H2O

This reaction represents the combustion of cellulose in the presence of oxygen, resulting in the formation of carbon dioxide (CO2) and water (H2O).

2. The balanced equation for the reaction between magnesium oxide (MgO) and water (H2O) to produce magnesium hydroxide (Mg(OH)2) is:

MgO + H2O → Mg(OH)2

According to the equation, 1 mole of magnesium oxide reacts with 1 mole of water to produce 1 mole of magnesium hydroxide. Therefore, if 2.55 moles of magnesium oxide react, the same number of moles of magnesium hydroxide will be produced.

3. The balanced equation for the reaction between carbon dioxide (CO2) and water (H2O) to form carbonic acid (H2CO3) is:

CO2 + H2O → H2CO3

According to the equation, 1 mole of carbon dioxide reacts with 1 mole of water to produce 1 mole of carbonic acid. Therefore, if 3.44 moles of carbonic acid are produced, the same number of moles of carbon dioxide is required.

To calculate the mass of carbon dioxide, we need to know its molar mass, which is approximately 44.01 g/mol. Therefore, the mass of carbon dioxide required to produce 3.44 moles of carbonic acid is:

Mass = Moles × Molar mass

Mass = 3.44 moles × 44.01 g/mol

Mass = 151.2444 g

Therefore, 151.2444 grams of carbon dioxide are required to produce 3.44 moles of carbonic acid in the blood.

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Answer:

Isotope N–14 = 99%

Isotope N–15 = 1%

Explanation:

Let isotope A be N-14

Let isotope B be N-15

From the question given above, the following data were obtained:

For isotope A (N-14):

Mass of A = 14

Abundance of A = A%

For isotope B (N-15):

Mass of B = 15

Abundance of B = (100 – A%)%

Atomic mass of nitrogen = 14.01 amu

Thus, we can obtain the relative abundances of the naturally occurring isotopes of nitrogen as illustrated below:

Atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100]

14.01 = [(14 × A%)/100] + [(15 × (100 – A%)/100]

14.01 = 0.14A% + 0.15(100 – A%)

14.01 = 0.14A% + 15 – 0.15A%

Collect like terms

14.01 – 15 = 0.14A% – 0.15A%

– 0.99 = – 0.01A%

Divide both side by – 0.01

A% = – 0.99 / –0.01

A% = 99%

Abundance of B = (100 – A%)%

Abundance of B = (100 – 99)%

Abundance of B = 1%

Thus, the relative abundances of the naturally occurring isotopes of nitrogen are:

Isotope N–14 = 99%

Isotope N–15 = 1%

Answer:

One atom of sulfur has a mass of 32.07 AMU; one mole of S atoms has a mass of 32.07 g.

Explanation:

Therefore, the answer should be 32.07 g

Answer:

rate=k×[C5H8]^n

k is the rate const.

when the rate is calculated using a few of the above data, (rate=change in concentration/time period) it can be observed that the rate is constant

therefore order of the reaction is 0

Answer:

1. is Molar (with capital M)

2. is molal (m)

Explanation:

By definition, 1 Molar solutions have 1 mol of solute in 1 L of solution and 1 molal solutions have 1 mol of solute in 1 Kg of solvent

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\\)

From the question we have

\(density = \frac{340}{40} = \frac{17}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

Animals need food, water, shelter, and space to survive. Herbivores can live only where plant food is available. Carnivores can live only where they can catch their food. Omnivores can live in many places because they eat both plants and animals.

The volume of the rectangle has been given by the product of length, breadth, and height. The mass of the air with a density of 1180 g/m³ is 708.57 gms.

The density of the substance has been known to be given by the mass's ratio to the volume. The formula for density is given as,

Density = Mass ÷ Volume

Given,

Density = 1180 g/m³

The volume of the rectangle = L×B×H

Substituting the values above,

Mass = Density × Volume

M = 1180 × 1.2 × 10⁻² × 8.34 × 10¹ × 6.0 × 10⁻¹

= 708.57 gm

Therefore, the mass of the air is 708.57 gms.

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The maximum number of electrons that can exist in the first energy level, n = 1, is 2.

The first energy level can hold a maximum of 2 electrons, and it is the closest energy level to the nucleus.

The first energy level consists of only one sub-shell, which is the s sub-shell, and it contains only one spherical orbital.

Therefore, according to the Pauli Exclusion Principle, which states that no two electrons can have the same set of four quantum numbers, the first energy level can hold a maximum of 2 electrons, with one electron occupying the 1s orbital, and the other occupying the 1s* orbital (also known as the anti-bonding orbital).

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Answer:

C. H20(aq)

Explanation:

Answer:    es no metales

Explanation:

Answer:

The redox reaction in the question is missing. The reaction is :

Cl 2(g) + Mn 2 +(aq) + 2 H-On â 2 Cl-(aq) + MnO2(s) + 4 H + (aq)

2.59V

Explanation:

A redox reaction is also known as oxidation - reduction reaction. In redox reaction, there is a transfer of electrons between the species. In one species there is oxidation and in the other species there is reduction process.

Cathode half reaction equation:

\($ Cl_2(aq) + 2e \rightarrow 2Cl^- (aq)$\)

Anode half reaction equation:

\($ Mn^2 (aq) + 2H_2O (l) \rightarrow MnO_2 (s) +2e +4H\)

E°cathode= 1.36V

E°anode= -1.23V

E°cell= E°cathode - E°anode

E°cell= 1.36 - (-1.23)

E°cell= 2.59V

Answer:

Answer: The two types of fibres obtained from the fleece of a sheep are beard hair, which are coarse and fine, and soft under hair, which grow near the skin. The under hair are used to make wool.

Explanation:

mark brainly please!

(I didn't copy the person above me! I just realized we had the same answer.)

Answer:

12: This is decomposition because nitrogen triiodide is breaking apart.

13: This is double displacement because the elements in the compounds are "switching".

14: This is synthesis because the water and carbon dioxide are combining.

15: This is also synthesis because the hydrogen and oxygen are combining.

16: This is single displacement because the sodium is "switching" the element it's bonding with.

No. Jeremy did not succeed in making the solution more concentrated.

Initially, Jeremy mixed an amount (x) of the cleaner with 4. 0 L of water making a concentration of 1.0 M.

       x/4 = 1.0 M

Thereafter, he added the same amount of (x) of the cleaner and added another 4.0 L of water:

Total amount of cleaner = x + x

                                        = 2x

Total amount of water = 4 + 4

                                      = 8.0 L

Concentration of the resulting solution = 2x/8

                                                               = x/4

x/4 = 1.0 M

Thus the concentration remains the same.

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The atomic mass of magnesium should be closer to 25

The following data were obtained from the question:

From the above data, we can see that the 1st isotope (with mass of 23.98504 amu) has an abundance of 78.70% which the greatest compared to the other isotopes.

Thus, the atomic mass of the magnesium will be around 24.

Therefore, we can say that the atomic mass of the magnesium will be closer to 25

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