A blacksmith partners with a team of chemistry and physics graduate students to
develop an anchor for boats that is able to be produced with minimal waste. Which of
the following do scientists need to take into consideration when designing this new
anchor to ensure that it is effective?
A. The color of the metal ions when dissolved in water.
B. The color of the metal
C. How easily the anchor changes temperature.
D. The density of the metal

The heat bound in human (mass 75 kg) when the body temperature rises one degree of Celsius is 74.9 kilocalories (without unit).

To find the quantity of heat bound in human (mass 75 kg) when the body temperature rises one degree of celcius, we need to use the specific heat capacity formula. Specific heat capacity of water is c= 4190  lgKJ​ .

We are given:

mass of human body (m) = 75 kg,

Specific heat capacity of water (c) = 4190  lgKJ​ .

Let the change in temperature of the human body be ΔT = 1 degree Celsius.

The formula for the heat bound in human can be given by:

Q = m c ΔTQ = 75 kg × 4190  lgKJ​ × 1 degree Celsius

Q = 313875 J or 313.875 KJ

Conversion of KJ to kilocalories: 1 kilocalorie (kcal) = 4.184 KJ

Thus, Q = 313.875/4.184 = 74.9 kcal.

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For a solution of 800 mL is infused over 12 hours, then the flow rate of solution is equals to the 66.7 mL/h.

To determine the flow in Q we need to define both the volume V in milliliters and the point at which it flows in hours is represented by t, or

Q = V/t ---(1)

it is equal to the rate in mL per hour.

Volume of solution, V = 800 mL

time of infused, t = 12 hours

Substitute the known values in above formula, flow rate, \(Q = \frac{800 mL }{ 12 h}\)

= 66.667 mL/h ~ 66.7

Hence, the required flow rate value is 66.7 mL/h .

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To determine the flow rate in ml/h for 800 ml infused over 12 hours, follow these steps:

1. Identify the total volume: 800 ml.
2. Identify the total infusion time: 12 hours.
3. Calculate the flow rate: Divide the total volume by the total infusion time.

Using the provided information, the calculation is:

Flow rate (ml/h) = 800 ml / 12 hours

Flow rate (ml/h) = 66.67 ml/h (rounded to two decimal places)

So, if 800 ml is infused over 12 hours, the flow rate is approximately 66.67 ml/h.

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Answer:

Globular clusters are densely packed collections of ancient stars. Roughly spherical in shape, they contain hundreds of thousands, and sometimes millions, of stars. Studying them helps astronomers estimate the age of the universe or figure out where the center of a galaxy lies.

Explanation:

Answer:

The atomic number will remain the same because a proton has a positive charge and a electron has a negative charge so they would cancel each other out

After the reduction of the ketone using borohydride, you need to add an acidic solution such as water/HCl to destroy the excess borohydride.

This is because borohydride is a strong reducing agent and can react with other functional groups in the reaction mixture. The acidic solution protonates the borohydride ion, forming hydrogen gas and borate ions, which are soluble and can be easily removed from the reaction mixture.

Adding other reagents such as hexanes, phenoxide ion, ethanol or acetic anhydride would not effectively destroy the excess borohydride and could lead to unwanted side reactions.  

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He carried out experiments that measured the scattering of alpha particles by heavy atoms known as the Rutherford scattering experiment. He investigated the scattering of alpha particles by heavy atoms, specifically gold foil.

Rutherford's experiment involved directing a beam of alpha particles at a thin gold foil. The alpha particles were produced by the radioactive decay of a source material. The expectation was that the alpha particles would pass through the gold foil with minimal deflection, as predicted by the Thomson model.

They observed that a small fraction of the alpha particles were significantly deflected at large angles, and some even bounced back in the direction from which they came. This result was unexpected and challenged the prevailing understanding of atomic structure.

From the observations, Rutherford concluded that atoms must have a small, dense, and positively charged center, which he called the nucleus. He proposed a new model of the atom in which most of the atom's mass and positive charge are concentrated in the nucleus, while the electrons orbit around it in empty space.

The scattering of alpha particles by heavy atoms in Rutherford's experiment provided strong evidence for the existence of a concentrated, positively charged nucleus within the atom and paved the way for the development of the modern understanding of atomic structure.

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Answer:

Ummm it would just be indistinguishable ..and i don’t think u well taste when u plug your nose so ldk but ig it is true let me know if am wrong

Explanation:

The chemical equation that describes an acid-base neutralization reaction is: acid + base → salt + water For example: HCl + NaOH → NaCl + H₂O

An acid-base neutralization reaction occurs when an acid reacts with a base, resulting in the formation of water and a salt. The chemical equation that describes an acid-base neutralization reaction is:

Acid + Base → Salt + Water

An example of this type of reaction would be the reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH):

HCl + NaOH → NaCl + H₂O

In this reaction, the hydrochloric acid and sodium hydroxide combine to form sodium chloride (a salt) and water.

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Mid-Atlantic region generalized New York State landscape region is drained by the Susquehenna River and its tributaries

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Answer:

can only accommodate 2 electrons

Your Question is complete but the options are very much confusing and contradicting. Below you will find the true and full content.

The correct answer for the given question about Enthalpy of vaporisation is ( Volume of liquid in L x 1000 g/L x ΔHvap cal/gm ) where ΔHvap = 540 cal/gm (in case of water).

The amount of energy (enthalpy) required to convert a portion of a liquid into a gas is known as the enthalpy of vaporisation, abbreviated as ΔHvap  and also referred to as the latent heat of vaporisation or heat of evaporation.

Let E be the energy required to calculate the energy required to vaporise a volume of liquid.

Then,

E = Volume of liquid in L x Density of liquid in gm/L  x ΔHvap in cal/gm

and E will came out in calorie.

E = Volume of liquid in L x 1000 g/L x 540 cal/gm --- (in case of water)

Thus we can conclude that to calculate the energy required to vaporise a volume of liquid, we can use the formula with ΔHvap which is E = (Volume of liquid in L x Density of liquid g/L x ΔHvap cal/gm ) and the answer will be in calorie.

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Alcoholic fermentation and lactic acid fermentation are distinct processes and both involves Anaerobic process, Production of NAD+, Recycling of Electron Carriers, Microorganism Involvement.

Alcoholic fermentation and lactic acid fermentation are both anaerobic processes that occur in living organisms. They are similar in that they are metabolic pathways that help cells produce energy in the absence of oxygen. Here are some key similarities between the two processes:

Anaerobic Process: Both alcoholic fermentation and lactic acid fermentation occur in the absence of oxygen. They are alternative pathways for cells to generate energy when oxygen is not available or in limited supply.

Production of NAD+: Both fermentation processes are involved in the regeneration of NAD+ (nicotinamide adenine dinucleotide), which is necessary for the continuation of glycolysis. In both processes, NADH (reduced form) is oxidized to NAD+ (oxidized form), allowing glycolysis to proceed.

Recycling of Electron Carriers: Alcoholic fermentation and lactic acid fermentation recycle the electron carriers produced during glycolysis. NADH generated during glycolysis is oxidized back to NAD+ through the fermentation process, enabling glycolysis to continue and produce ATP.

End Products: While they have some similarities, the main difference between alcoholic fermentation and lactic acid fermentation lies in the end products produced. In alcoholic fermentation, the end products are ethanol (alcohol) and carbon dioxide. In lactic acid fermentation, the end product is lactic acid.

Microorganism Involvement: Alcoholic fermentation is commonly carried out by yeast and some bacteria, whereas lactic acid fermentation is primarily performed by certain bacteria and muscle cells.

Despite these similarities, it's important to note that alcoholic fermentation and lactic acid fermentation are distinct processes with their own specific characteristics and functions in different organisms.

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Answer:

Explanation:

OPTION B IS THE RIGHT ANSWER

Answer:

Explanation:

To find the speed given the kinetic energy and mass we use the formula

\(v = \sqrt{ \frac{2KE}{m} } \\ \)

where

m is the mass

v is the speed

From the question

KE = 15 J

m = 2.3 kg

We have

\(v = \sqrt{ \frac{2 \times 15}{2.3} } = \sqrt{ \frac{30}{2.3} } \\ = 3.61157559...\)

We have the final answer as

Hope this helps you

The chemical changes that occur during fatty acid synthesis are reduction and condensation. This involves the reduction of carbonyl groups and the condensation of acetyl-CoA molecules. It is done to form long chains of carbon atoms.

The chemical change that occurs during fatty acid synthesis involves the condensation of two-carbon units in the form of acetyl-CoA. It is done to form long chains of carbon atoms. These chains are then processed to form various types of fatty acids. Therefore, Two main types of reactions occur during fatty acid synthesis reduction and condensation.

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Answer:

The atomic mass number does not change because a beta particle has a much smaller mass than an atom. The atomic number goes up because a neutron has turned into an extra proton, however in beta decay a fast-moving electron is fired out of the nucleolus

Hope this helped!

Answer:

C

Explanation:

Temperature is the amount of energy an object has in it's thermal energy stores

Answer:

Because: The mixtures contain unwanted substances which may be harmful and may degrade the properties of mixtures. So we, need to separated them and extract useful substances.

Answer:

The composition of the mixture is very important, as a result of nature exists solely by its properties, and also the reactions may be separated.

We must apply the formula that links a material's density to its atomic weight and unit cell dimensions in order to resolve this issue.





The density of a face-centered cubic lattice is given by: density is equal to (Z M) / (a3 Na).Z stands for the quantity of atoms perunit cell, M for the substance's molar mass, a for the lattice parameter, or the length of a cube's edge, and Na for Avogadro's number.Since KCl has a face-centered cubic unit cell in this instance, each unit cell contains 4 Cl- ions (corners) and 4 Cl- ions (face centres). Avogadro's number is 6.022 1023 mol-1, while the molar mass of KCl is 74.55 g/mol. So, here we are:We must apply the formula that links a material's density to its atomic weight and unit cell dimensions in order to resolve this issue. The density of a face-centered cubic lattice is given by density is equal to (Z M) / (a3 Na).Z stands for the quantity of atoms per unit cell, M for the substance's molar mass, a for the lattice parameter, or the length of a cube's edge, and Na for Avogadro's number.To solve for a, we obtain:an is equal to [(Z M) / density Na]^(1/3)The formula for an is [(8 74.55 g/mol) / (1.984 g/cm3 6.022 1023 mol1)]^(1/3)A = 6.289 ÅWe can use the correlation between the radius of an octahedral hole and the radius of the K+ ion to explain why the K+ ion occupies the octahedral hole between adjacent Cl- ions.



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The hydrogen atom, in its 4th excited state, can have a maximum orbital angular momentum of 4ℏ when it emits a photon with a wavelength of 434.2 nm.

The maximum possible orbital angular momentum of the hydrogen atom after emitting a photon with a wavelength of 434.2 nm is 4ℏ. This is because the atom was initially in its 4th excited state, and when it emitted a photon, it transitioned to a lower energy state. The difference in energy between the two states is equal to the energy of the emitted photon, which can be calculated using the equation:

E = hc/λ,

where E is energy, h is Planck's constant, c is the speed of light, and λ is wavelength. Once the energy of the emitted photon is known, the maximum possible orbital angular momentum can be calculated using the equation L = √(l(l+1)ℏ), where l is the quantum number of the orbital and ℏ is the reduced Planck's constant. In this case, the atom was in its 4th excited state, which corresponds to the l = 3 orbital. Plugging this value into the equation gives a maximum possible orbital angular momentum of 4ℏ.

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Carbonated beverages contain dissolved carbon dioxide gas. Low temperatures are best to minimize the solubility. option C is correct.

Drinks that have carbon dioxide dissolved in the water are referred as carbonated beverages. The presence of this gas causes the liquid to froth.

Carbonation takes place by applying pressure. Spring water, beer and soda, and pop are a few examples of carbonated beverages. When carbon dioxide  is absorbed in a liquid, for example spring water, it absorbs Carbon dioxide from the subsurface. It can also happen naturally. Beer is  example of a naturally carbonated beverage as the brewing process produces carbon dioxide soda .

Thus option C is correct.

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Answer:

H2SO4 + 2(NaOH) -----> Na2SO4 + 2(H2O).

Explanation:

The physical process that is primarily responsible for the purification achieved during recrystallization is the process of selective solubility.

The process of selective solubility refers to the ability of a substance to selectively dissolve in a particular solvent or a combination of solvents. The substance that is more soluble in a solvent will dissolve in that solvent while the impurities that are less soluble will remain undissolved.

The process of recrystallization is used to purify a solid that contains impurities. In this process, a solid is dissolved in a solvent that is heated to the boiling point. Once the solution is saturated, it is cooled slowly, and crystals are allowed to form. During recrystallization, the impurities are excluded from the growing crystals because of their lower solubility in the solvent, and the crystals that form are pure.

Therefore, the process of selective solubility is primarily responsible for the purification achieved during recrystallization.

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Answer:

79

Explanation:

Gold has 79 electrons, which makes it equal to 79 protons

Answer:

I'm gonna say igneous

Explanation:

The texture looks rough and the rock looks like it's composed of different types of minerals making it an igneous rock

I hope this helps :)

Answer: Igneous

Explanation: Igneous rock, or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or lava. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.

Answer:

Explanation:

The hazard coding system (developed by the National Fire Protection Association, NFPA) helps the individual working with chemicals to know which chemical is a health hazard, inflammable hazard or a reactivity hazard. This makes the individual makes informed decisions while handling such chemicals and also assists the individual or first responders to know what to or not to do in emergency cases or accident (like contact with the skin).

NOTE: The colour code used here have the meanings below

Red: flammability/fire hazard

Blue: health hazard

Yellow: reactivity hazard

White: special hazard

Carbocation rearrangements can be defined “as the movement of the carbocation from an unstable state to a more stable state by making use of different structural reorganizational shifts within the molecule”. Alkyl carbocation is a carbocation comprising an alkyl group.

Carbocation Rearrangement occurs whenever the alcohols are converted into several carbocations and this phenomenon is termed as carbocation rearrangement. In simple carbocation comprises +ve charge in a molecule that is connected to 3 more groups and holds a sextet. Carbocation rearrangement can be carried out to a reaction that does not involve alcohol. There are 2 types of carbocation rearrangements namely Alkyl and Hybrid Shift.

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The concentration of A decreases and then levels out. Option A

In many chemical reactions, a reactant is consumed as the reaction progresses, leading to a decrease in its concentration over time. The reactant molecules are transformed into products, and as the reaction proceeds, the concentration of the reactant gradually diminishes.

At equilibrium, the concentrations of both reactants and products remain relatively constant over time, although they can coexist.

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Answer:

hey! i hope you'll find this helpful, can i have brainliest please? thank you!

When an iron nail is repeatedly rubbed against a permanent magnet in the same direction, it can become temporarily magnetized. This phenomenon is known as magnetic induction.

Iron is a ferromagnetic material, which means it has the ability to be easily magnetized. When the nail is rubbed against the magnet, the magnetic domains within the iron align in a particular direction due to the influence of the magnetic field produced by the magnet. The repeated rubbing in the same direction helps align the magnetic domains more consistently.

The magnetic domains are small regions within the iron where groups of atoms have their magnetic moments aligned. In an unmagnetized iron nail, these domains are randomly oriented, resulting in a net magnetic field of zero. However, when the iron nail is rubbed with a magnet, the magnetic domains align in a common direction, creating a temporary magnetic field within the nail.

The alignment of the magnetic domains persists even after the rubbing stops, causing the iron nail to exhibit magnetism. However, this magnetism is relatively weak and temporary, as the domains can easily revert to their original random orientation. It means that the iron nail loses its magnetic properties over time unless it is exposed to a stronger external magnetic field or is made into a permanent magnet through a different process.

In summary, rubbing an iron nail against a permanent magnet in the same direction aligns the magnetic domains within the iron, resulting in temporary magnetization.

:D