23 POINTS PLZ HELP HURRY BEING TIMED FASTS ONE TO ANSWER GET BRAINLY!!

panda population are adopted to live in which kind of habitat/

A. Rain forest
B. Cherry Forest
C. Bamboo forest
D. Ginkgo forest

More than two-thirds of Earth's freshwater is stored in ice caps and glaciers, primarily in Antarctica and Greenland. These massive ice sheets contain an enormous amount of freshwater in the form of ice.

Ice Caps and Glaciers: These polar ice sheets hold the majority of the world's freshwater, accounting for roughly 68.7% of the total freshwater on the planet. Antarctica, the southernmost continent, has the largest ice sheet, followed by Greenland. These ice masses contain trillions of cubic meters of freshwater, which is locked up in the form of ice.

Groundwater: Approximately 30.1% of Earth's freshwater is stored underground in aquifers. These are layers of water-bearing rock and sediment beneath the Earth's surface. Groundwater is a vital source of freshwater for drinking, agriculture, and industry.

Surface Water: This includes all the freshwater on the Earth's surface, such as lakes, rivers, and reservoirs. Surface water accounts for about 0.3% of Earth's freshwater. While it represents a small percentage, it is crucial for various human activities and ecosystems.

Atmosphere: Water vapor in the atmosphere accounts for a tiny fraction of Earth's freshwater, approximately 0.001%. This water vapor plays a vital role in the Earth's climate and weather systems.

For more such question on freshwater visit:

https://brainly.com/question/25326161

#SPJ6

The true statement is that neon is inert because its outermost shell is complete. Neon's full outer shell of eight electrons makes it unreactive, unlike fluorine which seeks an additional electron to become stable and is therefore highly reactive.

The correct statement among those provided is that neon is inert because its outermost shell is complete. According to the octet rule, atoms are more stable energetically when they have eight electrons in their valence shell, which is the outermost electron shell, with the exception of helium which has a full shell with two electrons. Neon, with its electron configuration of 1s² 2s²2p6, has a full outer shell and does not tend to gain or lose electrons, making it unreactive or inert.

Contrarily, fluorine, which has seven electrons in its outer shell, is more reactive than neon because it seeks one additional electron to complete its octet. The statement that fluorine is more reactive than neon because fluorine has to gain, not lose, one electron to fill its outermost shell is true. It's important to note that neither nitrogen nor oxygen are considered inert, as their outer shells do not have the complete octet, and moreover, oxygen is not more reactive than fluorine; fluorine is, in fact, the most reactive of the halogens because it needs only one more electron to achieve a full outer shell.

Answer:

A

Explanation:

Edge

A saturated solution is a solution a solution with as much dissolved solute as it can hold at a given temperature. Thus option a is correct.

Saturation is state of attaining maximum in any action. A solution is made of a solvent and solute. The solubility of the solute depends on its bond type, mass, temperature and pressure. The solute can be of non -soluble, partially soluble or completely soluble.

Solubility is the fraction of concentration of a solute that can be dissolved in a solvent. Some solutes can be dissolved easily by heating. However, the there is limit for the solvent to dissolve its maximum salt at a given temperature.

That limit is called its saturation point. Beyond that no more amount of solute can be dissolved even by heating. When the solvent reaches its saturation for a given temperature, diluting with more solvent can be results in better solubility.

Hence, the statement defining a saturated solution is option a.

To find more about saturation, refer the link below:

https://brainly.com/question/28215821

#SPJ2

The iupac name of the compound will be hex-3-yne or 3-hexyne. By marking number of carbon in the given compound, it was found that triple bond comes at third position and there are total 6 carbon in the compound. So it will have Hex as a prefix and as it contains triple bond so it will have yne as a suffix and as the triple bond is at third position, so it will be hex-3-yne or 3-hexyne.

The correct name for the molecule is 3-hexyne.

To determine the name of the molecule, we need to follow the rules of IUPAC nomenclature for alkynes. The molecule has a total of 6 carbon atoms in its longest carbon chain, which makes the base of the name hexyne.

The triple bond, indicated by the yne suffix, is located at the third carbon atom from the end, hence the number 3 in the name. The other options provided contain either an incorrect number of carbon atoms or an incorrect type of bond (alkene instead of alkyne). Therefore, the correct IUPAC name for this molecule is 3-hexyne.

The complete question is- What is the name for this molecule?

a. 3-heptyne

b. 3-heptene

c. 3-hexyne

d. 3-hexene

Answer:

increase in the air pressure

Explanation:

The barometer is a device that is used for measuring the air pressure. It is a device that uses mercury in order to show the air pressure. The mercury reacts easily to the changes in the air pressure, so it is a nice indicator for it. The air pressure can simply be defined as the weight of the air masses, and the pressure they make it because of it on the objects. The lower the air pressure, the higher up the mercury will go, as it will experience less pressure from the air, and the higher the air pressure, the lower the mercury will drop, as it will experience more pressure from the air.

An aqueous solution contains 0.100 m NaOH at 25.0 °C. the pH of the solution is 13.00

To determine the pH of a 0.100 M NaOH solution, we need to understand that NaOH is a strong base and dissociates completely in water. The concentration of hydroxide ions (OH-) in the solution will be equal to the concentration of NaOH, which is 0.100 M.

The pOH of the solution can be calculated using the formula:

[tex]\[ \text{pOH} = -\log[OH^-] \][/tex]

where [tex]\([OH^-]\)[/tex] is the concentration of hydroxide ions.

Given that [tex]\([OH^-] = 0.100\)[/tex] M, we can calculate the pOH as follows:

[tex]\[ \text{pOH} = -\log[0.100] \][/tex]

[tex]\[ \text{pOH} = -(-1) = 1 \][/tex]

At 25.0 °C, the pH and pOH of a solution are related by the equation:

[tex]\[ \text{pH} + \text{pOH} = 14.00 \][/tex]

Using the calculated pOH, we can find the pH:

[tex]\[ \text{pH} = 14.00 - \text{pOH} \][/tex]

[tex]\[ \text{pH} = 14.00 - 1 \][/tex]

[tex]\[ \text{pH} = 13.00 \][/tex]

No, the biosphere does not exhibit a clear boundary as life always comes to an end.  

The biosphere comprises all the living things of the world, like all the plants and animals. It is considered as the global ecosystem, that is, the gathering of all the planet's ecosystems. It comprises the land and the atmosphere. It is usually considered as the zone of life, where all the species of the planet thrives.  

Redox reactions is spontaneous as written-  Zn + K+ → Zn2+ + K. Option D is correct.

To determine which of these redox reactions is spontaneous as written, we can look at the standard reduction potentials of the involved half-reactions. In electrochemistry, spontaneous redox reactions occur when the reduction potential of the oxidizing agent (left side) is more positive than that of the reducing agent (right side). In other words, the spontaneous reaction goes from a higher reduction potential to a lower one. Let's evaluate each reaction:

A. Ni + Mg^2+ → Ni^2+ + Mg

Reduction potential for Ni^2+ → Ni: -0.25 V

Reduction potential for Mg^2+ → Mg: -2.37 V

The reduction potential for the left side is more positive than that for the right side, so this reaction is spontaneous as written.

B. Al + Fe^3+ → Al^3+ + Fe

Reduction potential for Al^3+ → Al: -1.66 V

Reduction potential for Fe^3+ → Fe: -0.04 V

The reduction potential for the left side is more positive than that for the right side, so this reaction is also spontaneous as written.

C. Hg + Al^3+ → Hg^2+ + Al

Reduction potential for Al^3+ → Al: -1.66 V

Reduction potential for Hg^2+ → Hg: -0.85 V

The reduction potential for the left side is more positive than that for the right side, so this reaction is spontaneous as well.

D. Zn + K^+ → Zn^2+ + K

Reduction potential for K^+ → K: -2.92 V

Reduction potential for Zn^2+ → Zn: -0.76 V

In this case, the reduction potential for the left side is less positive than that for the right side, so this reaction is not spontaneous as written.

Option D

For more such question on Redox reactions visit;

https://brainly.com/question/21851295

#SPJ6

5,500 ears if u using usatestprep

Final answer:

To calculate the mass of 0.446 mol Na₂CO₃, multiply the number of moles by its molar mass of 105.98 g/mol, resulting in 47.27 grams of Na₂CO₃.

Explanation:

To find out how many grams 0.446 mol of Na₂CO₃ corresponds to, we can use the molar mass of Na₂CO₃.

First, we should recall the molar mass of Na₂CO₃. Using the atomic masses Na (22.99), C (12.00), and O (16.00), the molar mass would be:

(2 × 22.99) + 12.00 + (3 × 16.00) = 105.98 g/mol

Now, we can calculate the mass of 0.446 mol of Na₂CO₃:

0.446 mol Na₂CO₃ × 105.98 g/mol = 47.27 grams

Answer: The vertical axis should labelled as 'Volume (unit)' as it is missing from the given graph.

Explanation:

The labeling of vertical axis is missing from the given graph between the temperature and volume.

The vertical axis should labelled as 'Volume (unit)'  because it is given that the graph is in between the temperature and the volume.And temperature is on the horizontal axis is already labeled in the graph.

On top of the graph name of the graph should also be written as Temperature vs Volume graph.

From the unit we mean that the unit in which is used in measuring the volume and in the graph like: L ,mL etc.

A. The mass of CO₂ produced is 176 g.

B. The mass of H₂O produced is 36 g

We'll begin by calculating the mass of C₂H₂ that reacted and the masses of CO₂ and H₂O produced from the balanced equation.

2C₂H₂ + 5O₂ —> 4CO₂ + 2H₂O

Molar mass of C₂H₂ = (2×12) + (2×1) = 26 g/mol

Mass of C₂H₂ from the balanced equation = 2 × 26 = 52 g

Molar mass of CO₂ = 12 + (16×2) = 44 g/mol.

Mass of CO₂ from the balanced equation = 4 × 44 = 176 g

Molar mass of H₂O = (2×1) + 16 = 18 g/mol

Mass of H₂O from the balanced equation = 2 × 18 = 36 g

SUMMARY:

From the balanced equation above,

52 g of C₂H₂ reacted to produce 176 g of CO₂ and 36 g of H₂O.

From the above, we can see that 52 g of C₂H₂ produced:

Learn more about stoichiometry:

https://brainly.com/question/25812506

The trimethylammonium ion (CH3)3NH+ has a total of 25 valence electrons after accounting for its positive charge; 26 electrons from the combined valence electrons of nitrogen, carbon, and hydrogen atoms and subtracting one electron for the positive charge.

To calculate the number of valence electrons in the trimethylammonium ion (CH3)3NH+, we first need to sum the valence electrons of all the atoms. Nitrogen (N) has 5 valence electrons, each hydrogen (H) atom has 1, and each carbon (C) atom has 4. Since there are three methyl groups (CH3), we have 3 carbons and 9 hydrogens:

Adding these up gives 5 + 12 + 9 = 26 valence electrons. However, since we have a positively charged ion (NH+), we need to subtract one electron to account for the charge. This leaves us with a total of 25 valence electrons in the trimethylammonium ion. When drawing the Lewis structure of this polyatomic ion, it is also common practice to enclose the structure in brackets and denote the charge outside of it.

https://brainly.com/question/28977387

#SPJ3

The trimethylammonium ion, [tex](CH\(_3\))\(_3\)NH\(^+\)[/tex], has 0 valence electrons.

The trimethylammonium ion, [tex](CH\(_3\))\(_3\)NH\(^+\),[/tex]is composed of a nitrogen atom bonded to three methyl groups [tex](CH\(_3\))[/tex] and a hydrogen atom, with an additional positive charge indicating the loss of an electron compared to the neutral molecule.

First, let's consider the valence electrons in the neutral trimethylamine molecule, [tex](CH\(_3\))\(_3\)NH,[/tex] before it gains a positive charge:

Since here we can see that there is a negative -2 charge on nitrogen so there is gain of electron and hence it is reduced.

Learn more about Oxidation Reduction here:

https://brainly.com/question/8493642

#SPJ2

There are some methods that differentiate waves; one thing is by its medium. Electromagnetic waves did not require a medium for transmission such as in a vacuum while mechanical waves require a medium to travel such as air, water or anything that can serve as a transmission aid.  

The most common sample of EM waves in telecommunication is radio, light and infra-red signals. An example of a mechanical wave is a sound wave, which requires air to travel. Oscillating molecules made the sound waves. 

To create a buffer with a pH of 5.061 in a 0.500 M acetic acid solution, 0.545 mol of sodium acetate must be added to 1.000 liter of the solution. This calculation uses the Henderson-Hasselbalch equation and takes into account the ionization constant of acetic acid.

To find out how many moles of sodium acetate ([tex]NaCH_3COO[/tex]) must be added to 1.000 liter of a 0.500 M solution of acetic acid ([tex]CH_3COOH[/tex]) to produce a pH of 5.061, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

where [A-] is the concentration of the acetate ion, [HA] is the concentration of acetic acid, and pKa is the negative logarithm of the ionization constant (Ka) of acetic acid.

First, we calculate pKa:

pKa = -log(Ka)

pKa = -log(1.8 * 10-5)

pKa = 4.74

Next, rearrange the Henderson-Hasselbalch equation to solve for [A-]:

[A-] = [HA] * 10(pH-pKa)

[A-] = 0.500 M * 10(5.061-4.74)

[A-] = 0.500 M * 100.321

[A-] = 0.500 M * 2.09

[A-] \\approx 1.045 mol/L

Since the initial concentration of acetic acid is 0.500 M, we need to add 1.045 mol - 0.500 mol = 0.545 mol of sodium acetate to the solution to achieve the desired pH.

When two substances that cannot dissolve each other are mixed, a mixture is formed. a heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is  a "Colloid"

An example of colloid can be gels, sols, or emulsions; where solids or liquids are dispersed in the mixture. It usually takes very long time to settle down.

A heterogeneous mixture that has larger dispersed particles that settle over time is a "Suspension"

Suspensions are those mixtures which usually has large particles and which takes comparatively less time than colloids to get settled. Like salt water, muddy water, fine sand in water, etc.

Answer:

First one is: heterogeneous

Second one is: colloid

Third one is: suspension

⛄️❆

Explanation:

The atomic number that represents a radioactive element is N = 100.

Therefore, the correct answer is option 4: N = 100.

To determine which of the given atomic numbers represent a radioactive element, we need to look at the periodic table and identify elements with atomic numbers corresponding to known radioactive elements.

1. N = 11 corresponds to sodium (Na), which is not radioactive.

2. N = 56 corresponds to barium (Ba), which is not radioactive.

3. N = 81 corresponds to thallium (Tl), which has two radioactive isotopes, but it also has stable isotopes.

4. N = 100 corresponds to fermium (Fm), which is a synthetic element and is highly radioactive.

So, the atomic number that represents a radioactive element is N = 100.

Therefore, the correct answer is option 4: N = 100.

The probable question may be:

Which of the following atomic numbers represent an element that is radioactive on the periodic table.

1. N=11

2.N=56

3.N=81

4.N=100

The correct options are the following:

False -Cl2 will have a higher boiling point than Ar.

True -NH3 will have a lower vapor pressure at -50oC than NO.

False -LiF will have a higher vapor pressure at 25oC than H2S.

True -As the polarity of a covalent compound increases, the solubility of the compound in CCl4 decreases.

True -Cl2 will have a higher melting point than HBr.

Intermolecular forces are those forces which intermediate the interaction between different molecules.

If the intermolecular force between molecules is lower, then the vapor pressure will be lowered and higher the boiling point will be.

Thus, the options are:A -false, B -True, C -False, D -True, E -True.

Learn more about intermolecular forces, here:

https://brainly.com/question/17111432

Final answer:

The boiling point of a substance is determined by the strength of its intermolecular forces. Cl2 will have a higher boiling point than Ar due to stronger dispersion forces. NH3 will have lower vapor pressure than NO due to stronger hydrogen bonds. LiF will have higher vapor pressure than H2S due to stronger electrostatic interactions. As the polarity of a covalent compound increases, its solubility in CCl4 decreases. Cl2 will have a higher melting point than HBr due to stronger London dispersion forces.

Explanation:

The boiling point of a substance is determined by the strength of the intermolecular forces between its particles. In general, substances with stronger intermolecular forces have higher boiling points. Therefore, we can determine the relative boiling points of the given substances based on their intermolecular forces: