a cylindrical storage tank has a radius of 1.48 m. when filled to a height of 3.65 m, it holds 13600 kg of a liquid industrial solvent. what is the density of the solvent?

Answer:

comes from a translation of the German word Edelgas, which means noble gas.

Why Are Noble Gases Called Noble? The term “noble gas” comes from a translation of the German word Edelgas, which means noble gas. German chemist Hugo Erdmann coined the phrase in 1898. Like a nobleman might consider it undignified to associate with commoners, noble gases tend not to react with other elements.

Explanation:

hope it helps

Answer:

Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus.

Explanation:

Rutherford designed an experiment to use the alpha particles emitted by a radioactive element as probes to the unseen world of atomic structure.

The pKa value of the functional group classes represented by the given molecules will depend on the specific molecule and its structure. Generally, the pKa value of an OH group is around 16, while the pKa value of an NH group is around 10-12.

Molecule is a collection of two or more atoms that are held together by chemical bonds that are formed when electrons are shared between atoms. Molecules can range from simple diatomic molecules, like oxygen, to complex proteins and DNA molecules. Molecules can be composed of elements from the same or different groups of the periodic table. The atoms that compose molecules may be of different sizes and have different properties.

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the one main difference between a hurricane and a typhoon is the specific location where the storm takes place!!

typhoons and hurricanes can reach sustained winds of an averaging 74 mph.

The structure has a net charge of zero as shown by the question.

What is a charged species?

If a species has an excessive amount of positive or negative charge, we say that it is charged. If there is an excess of a positive charge, the substance is positively charged, and if there is an excess of a negative charge, the thing is simply negatively charged.

As we've seen, when we have a chemical structure, it's feasible that the structure itself might have a net charge. By examining the formal charges that each atom in the system carries, we may determine the net charge that the structure contains.

As we can see, the molecule's centre atom carries a -1 charge, which is the charge that the entire structure is carrying.

If we then examine the structure as it is, we can see that the chlorine atom has a negative charge linked to it, as is evident from the image that is attached to the question.

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Answer:

The periodic table is organized in non-metals metals and metalloids, in in terms of trends and patterns you may want to talk about the the density of the elements or the mass of per unit of measurement of whatever you're going to use sorry that could be much help but I hope it helps.

In this question we have two dilutions occurring, for both cases we will use the dilution formula, which says that the initial concentration and volume of a solution must be equal to the final concentration and volume of the solution, we can better understand that formula presenting it to the question:

M1 * V1 = M2 * V2

where:

M1 = initial molar concentration

V1 = initial volume in liters

M2 = final molar concentration

V2 = final volume in liters

Now let's see what happens in our first dilution:

1.60 M * 0.075 L = M2 * 0.278 L

M2 = 0.43 M, this is the first final concentration

Now we have a solution with 0.43M and 278 mL

In the question we take 139 mL of the 0.43 M solution and add 193 mL, therefore having 332 mL as final volume, let's use the formula again

0.43 M * 0.139 L = M2 * 0.332 L

M2 = 0.180 M as final concentration

The Process of Animal Pollination. Pollinators come to flowers in search of food (nectar and pollen). During a flower visit, a pollinator may unintentionally brush up against the flower's reproductive parts, depositing pollen from another flower. The pollen is then used by the plant to produce a fruit or seed.

Answer:

Labor unions were created in order to help the workers with work-related difficulties such as low pay, unsafe or unsanitary working conditions, long hours, and other situations. ... Sometimes the unions organized strikes in order to try to change the conditions of the workers.

Explanation:

Answer:

to speak with one voice

Explanation:

a p e x

Answer:

Add or remove a proton

Explanation:

This is because if you add a neutron, Oxygen becomes an isotope. If you add or remove a valence electron, it becomes a positive or negatively charged ion. If you add or remove a proton, you take away its chemical identity. If you add a proton, Oxygen becomes Fluorine, take away a proton, it becomes Nitrogen

Answer:

Add or remove a proton

Explanation:

im just tryna help people out trust me its that one

The rms speed of H2 molecules at 25°C is about 1930 m/s.

To find the temperature at which CO2 molecules would have the same rms speed, we can use the formula:

where vrms is the root-mean-square speed, k is Boltzmann's constant, T is the temperature in Kelvin, and m is the mass of the molecule.

Rearranging this formula, we get:

T = (vrms^2 * m) / (3k)

Plugging in the values for H2 (m = 3.3x10^-27 kg) and CO2 (m = 5.9x10^-26 kg), and solving for T, we get:

T = 25°C * (5.9/3.3)^2 = 270°C

Therefore, at a temperature of 270°C, CO2 molecules would have an rms speed equal to that of H2 molecules at 25°C.

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Based on the products formed when they react with water, the following is true:

AlCl₃ - Acidic.

NaBr - Neutral.

NaClO - Acidic.

3CH₃NH₃NO₃ - Acidic.

Na₂SO₃ - Basic.

A chemical compound is a substance made of numerous identical molecules joined by chemical bonds and containing atoms from various chemical elements. Therefore, a molecule composed entirely of one element's atoms is not a compound.

Here,

given set of solution:

(a) AlCl3

(b) NaBr

(c) NaClO

(d) 3CH3NH34NO3

(e) Na2SO3

AlCl3 produces hydrochloric acid, a potent acid, when it reacts with water. The mixture is going to be acidic.

When NaBr reacts with water, it creates Sodium Hydroxide, a powerful base, and Hydrobromic acid, a powerful acid. They will balance each other out because they are both powerful, leaving a neutral result.

Sodium Hydroxide, a weak acid and a strong base, are the products of NaClO. The solution will be simple.

Nitric Acid, a strong acid, and a weak base will be produced by 3CH3NH3NO3, making the solution acidic.

Na2SO3 would generate Sodium Hydroxide, a strong base, and a weak acid, making the solution basic.

The following is true based on the products formed when they react with water:

Acidic AlCl3.

NaBr is a neutral compound.

NaClO is an acidic compound.

3CH3NH3NO3 is an acidic compound.

Na2SO3 is a basic.

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Bile salts would not be as effective if they were exclusively polar molecules instead of amphiphilic molecules.

Bile salts would not be as effective because amphiphilic molecules, like bile salts, have both hydrophilic (water-loving) and hydrophobic (water-fearing) regions, which allow them to function effectively in the digestion and absorption of fats. The main function of bile salts is to emulsify fats in the small intestine. Emulsification is a process that breaks down large fat globules into smaller droplets, increasing their surface area and making them more accessible to digestive enzymes, like lipase.

The amphiphilic nature of bile salts is crucial in this process, as their hydrophobic regions interact with fats while their hydrophilic regions interact with the watery environment of the small intestine. If bile salts were exclusively polar molecules, their ability to interact with and emulsify fats would be greatly diminished. Polar molecules tend to dissolve well in water, but they have limited interaction with nonpolar substances, like fats. Consequently, the emulsification of fats would be significantly less efficient, leading to incomplete digestion and absorption of fats and fat-soluble vitamins.

In conclusion, the amphiphilic nature of bile salts is essential for their role in the digestive system. If they were exclusively polar molecules, their effectiveness in emulsifying and digesting fats would be severely compromised.

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74.5 grams of lead (II) nitrate were reacted to produce 62.6 grams of lead (II) chloride.

To determine the mass of lead (II) nitrate that was reacted when 62.6 grams of lead (II) chloride is produced, we need to use the stoichiometry of the balanced chemical equation and calculate the molar masses of the compounds involved.

The balanced chemical equation for the reaction is:

2Pb(NO3)2 + 2NaCl → 2PbCl2 + 2NaNO3

From the equation, we can see that 2 moles of Pb(NO3)2 react to produce 2 moles of PbCl2. Therefore, the molar ratio of Pb(NO3)2 to PbCl2 is 1:1.

First, let's calculate the molar mass of PbCl2 and Pb(NO3)2:

Molar mass of PbCl2 = Atomic mass of Pb + 2 × Atomic mass of Cl

= 207.2 g/mol + 2 × 35.45 g/mol

= 278.1 g/mol

Molar mass of Pb(NO3)2 = Atomic mass of Pb + 2 × (Atomic mass of N + 3 × Atomic mass of O)

= 207.2 g/mol + 2 × (14.01 g/mol + 3 × 16.00 g/mol)

= 331.2 g/mol

Next, we can calculate the moles of PbCl2 produced:

Moles of PbCl2 = Mass of PbCl2 / Molar mass of PbCl2

= 62.6 g / 278.1 g/mol

≈ 0.225 mol

Since the molar ratio of Pb(NO3)2 to PbCl2 is 1:1, the moles of Pb(NO3)2 reacted will also be 0.225 mol.

Finally, to find the mass of Pb(NO3)2 that was reacted, we can use the moles and molar mass:

Mass of Pb(NO3)2 = Moles of Pb(NO3)2 × Molar mass of Pb(NO3)2

= 0.225 mol × 331.2 g/mol

≈ 74.5 g

Therefore, approximately 74.5 grams of lead (II) nitrate were reacted to produce 62.6 grams of lead (II) chloride.

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Salt X is 0.05 M (molar concentration) soluble at 25°C.

To calculate the solubility of salt X at 25°C, we need to determine the amount of salt that dissolves in a given volume of solution. In this case, we have a saturated solution containing 0.28 g of salt X in 100 cm³ of solution.

The solubility is defined as the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature. Therefore, the solubility of salt X is given by the ratio of the mass of the solute (0.28 g) to the volume of the solution (100 cm³).

Solubility = Mass of solute / Volume of solution

Solubility = 0.28 g / 100 cm³

Since the solubility is expressed in grams per cubic centimeter (g/cm³), we can directly use the given values.

Solubility of salt X = 0.28 g / 100 cm³

To determine the solubility in mol/L (Molar concentration), we need to convert the mass of the solute to moles. The molar mass of salt X is given as 56 g/mol.

Number of moles = Mass / Molar mass

Number of moles = 0.28 g / 56 g/mol

Number of moles = 0.005 mol

Now, we can calculate the solubility in mol/L (M).

Solubility = Number of moles / Volume of solution (in L)

Solubility = 0.005 mol / 0.1 L

Solubility = 0.05 M

Therefore, the solubility of salt X at 25°C is 0.05 M (molar concentration).

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Answer:

B B B B B B B B B B B B B B B B B B B B B B B B

b is not cell theory

It takes about 15.02 seconds for the drug concentration to reach 0.24 g/cm3.

Drug concentration after 10 seconds:

C(t)= 0.2(1 + 3e^-0.3t)

Given t = 10 seconds

C(10) = 0.2 (1 + 3e^-0.3*10)≈ 0.75 g/cm32.

Rate of change between 30 and 45 seconds (g/cm3/sec)

Rate of change of C with respect to t is given by d

C/dt = -0.18e^-0.3t

When t = 30,dC/dt = -0.18e^-0.3*30 = -0.0104 g/cm3/sec

When t = 45,dC/dt = -0.18e^-0.3*45 = -0.0015 g/cm3/sec3.

Time taken for drug concentration to reach 0.24 g/cm3

To find the time it takes for the drug concentration to reach 0.24 g/cm3,

we solve the equation C(t) = 0.24 g/cm3 for t.

C(t) = 0.2 (1 + 3e^-0.3t)0.24

      = 0.2 (1 + 3e^-0.3t)1.2

      = 1 + 3e^-0.3t0.2

      = 3e^-0.3tln(0.2/3)

      = -0.3tln(0.2) - ln(3)

     = -0.3tln(3) + ln(0.2)

     = 0.3tApproximately, t

    ≈ 15.02 seconds,

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Answer:

the cation comes first I believe

Explanation:Let me know if I'm wrong pls

Hypothermia and a low pH would impair the activity of salivary amylase. The enzyme's catalytic function would be significantly reduced, leading to a decrease in its ability to break down starches in the mouth.

If someone had hypothermia and their body temperature dropped to 65°F, and their pH dropped to 3-4, the enzyme salivary amylase would experience significant changes in its activity. The enzyme's optimal temperature and pH are crucial for its proper functioning, and deviations from these optimal conditions can have detrimental effects.

At a temperature of 65°F, which is significantly lower than the enzyme's optimum of 98.6°F, the activity of salivary amylase would be greatly reduced. Enzymes generally work best within a specific temperature range, and extreme deviations from the optimum can cause the enzyme to become less effective or even inactive. The lower temperature would slow down the enzyme's catalytic activity, resulting in a decrease in its ability to break down starches into smaller sugar molecules.

Similarly, a pH of 3-4, which is significantly lower than the enzyme's optimum pH of 6-7, would also negatively impact the enzyme's activity. Salivary amylase functions optimally in a slightly acidic to neutral pH range. A pH that is too acidic would disrupt the enzyme's structure and affect its ability to bind to its substrate and catalyze the reaction efficiently.

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A potassium atom's ground state electron configuration is 1s2, 2s2, 2p6, 3s2, 3p6, 4s1.

An atom's electron configuration is a picture of how electrons are arranged in relation to orbital shells and subshells. Consequently, this is potassium's electron configuration.

Making Electron Configurations in Writing. Write the energy level (the period) first, then the subshell that needs to be filled, and finally the superscript, which indicates how many electrons are in that subshell. The atomic number, Z, is the sum of all the electrons.

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Order of increasing intermolecular forces will be CH4 < C3H8 < C4H10.

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The enthalpic term is favorable, while the entropic term is unfavorable for the formation of secondary structure motifs.

In the context of secondary structure motifs like α-helices or β-sheets, the enthalpic term refers to the energy changes associated with the formation of hydrogen bonds and other stabilizing interactions within the motif.

The enthalpic term is generally favorable for the formation of secondary structures since the establishment of these interactions contributes to the stability and structural integrity of the motif.

On the other hand, the entropic term relates to the changes in molecular freedom or disorder upon the formation of secondary structure motifs.

When a protein adopts a specific secondary structure, there is a reduction in conformational flexibility, resulting in a decrease in entropy.

This entropic term is typically unfavorable for the formation of secondary structures since it restricts the range of accessible conformations for the protein.

Overall, the enthalpic term, driven by favorable interactions, promotes the formation of secondary structure motifs, while the entropic term, driven by reduced conformational flexibility, poses an unfavorable contribution to the process.

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a.)  The Volume of water displaced is  3 ml

b.)  The final density of the mineral is 4.1 g/ml.

(a) The volume of water displaced is the ratio of the volume containing mineral to the volume excluding mineral.

Volume of water displaced = Volume with mineral - Volume without mineral

Volume of water displaced = 53 ml - 50 ml

Volume of water displaced = 3 ml.

(b) The following formula can be used to determine the mineral's density:

Mass / Volume equals density.

The difference between the mass of the mineral and the mass without the mineral is the mass of the mineral.

Mass of mineral = Mass with mineral - Mass without mineral

Mass of mineral = 12.3 g - 0 g (since the mass without mineral is not given)

Mass of mineral = 12.3 g

By deducting the volume without the mineral from the volume with, one may determine the volume of the mineral.

Volume of mineral = Volume with mineral - Volume without mineral

Volume of mineral = 53 ml - 50 ml

Volume of mineral = 3 ml

Therefore, the density of the mineral is:

Density = Mass of mineral / Volume of mineral

Density = 12.3 g / 3 ml

Density = 4.1 g/ml

Therefore, the final density of the mineral is 4.1 g/ml.

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Answer:

damming rivers for hydroelectricity, using water for farming, deforestation and the burning of fossil fuels.

Explanation:

The type of reaction SN1 or SN2 reaction will depend on the specific substrate, nucleophile, and reaction conditions.

To make OH- (hydroxide ion) a good leaving group for SN1 and SN2 reactions, you can follow these steps:
1. Protonate the OH- group: In the presence of a strong acid, the hydroxide ion (OH-) will accept a proton (H+) and become water (H2O). This process is called protonation.
OH- + H+ → H2O
2. Convert the poor leaving group to a better one: By protonating the OH- group, you've turned it into water (H2O), which is a better leaving group. This is because water is more stable and can more easily dissociate from the substrate.
3. Proceed with the SN1 or SN2 reaction: Now that the hydroxide ion has been converted to a better leaving group (water), it can more easily participate in SN1 and SN2 reactions.

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Answer

moles = 5.81 mol

Explanation

Given:

Volume = 144 L

AT SATP

1 mole = 24.4651 L

Solution:

1 mole = 24.4651 L

x mole = 144 L

x = 144/24.4651

x = 5.8 mol

Answer:

atoms and molecules

Explanation:

matter is made up of particles called atoms and molecules

Matter is made up of small molecules and attoms

Answer: high temperatures

Explanation:

It varies.