From the law of the conservation of mass, there would be two molecules in the product.
What is the law of the conservation of mass?We have to note that from the law of the conservation of mass, the total mass of the system must be constant. This implies that the initial mass of the system must be the same as the final mass of the system.
In this case, we have the reaction between the silver nitrate and the sodium chloride and we can see that the reaction is 1:1 and we have to apply the law of the conservation of mass here to know that there would be two molecules in the product.
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What popular fast food chain encouraged customers to think outside the bun?
The popular fast food chain encouraged customers to "think outside the bun" is taco bell.
Taco bell has long entertained fast-food fans with catchy slogans like "Yo Quiero Taco Bell," "Think Outside the Bun," and "Live mas." Their slogan "Think Outside the Bun" is a play on the phrase "think outside the box," which means to be creative and innovative. With the majority of Taco Bell's competitors serving hamburgers (McDonald's, Burger King, etc.), Taco Bell encourages you to "think outside the (hamburger) bun" and indulge in their coveted Tex-Mex cuisine.
A fast food chain is a restaurant that offers quick, convenient meals at low prices. These restaurants typically serve a limited menu of burgers, fries, chicken, pizza, and other fried foods. Fast food restaurants are typically found in high-traffic areas such as near highways, shopping malls, and tourist attractions. These restaurants frequently use a "fast-food" model, in which customers order at a counter, pay for their meal, and then pick up their food when it is ready. Many fast food restaurants also provide drive-through services, allowing customers to order and receive their food without having to leave their vehicle. Fast food restaurants frequently provide delivery services, allowing customers to have their meals brought to their homes or workplaces.
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Why H2O is called a molecule?.
Answer:
Water molecules are made of hydrogen and oxygen atoms, in the definite proportion of two hydrogens for one oxygen. Hence, a molecule is the smallest subunit of a compound while an atom is the smallest subunit of an element. Aggregates of single atoms make elements. Aggregates of molecules make compounds.
Explanation:
(◕ᴗ◕✿)(◕ᴗ◕✿)(◕ᴗ◕✿)
Can someone give me a grade for this essay:
Research and investigate the use of chlorine in water treatment, include both chemical and ethical aspects.
What I wrote:
How it works:
Chlorine serves as a method to further purify water, it can do this by killing the microorganisms that can cause disease (pathogens) that are still left after the sterilisation by breaking down the lipids that make up their cell walls and reacting with the enzymes and proteins inside, deeming them as unusable.
Why is chlorine a great chemical to use in water treatments?
The main sources of water are seas, rivers, and lakes. Living near one of these sources can help get water, but for countries in Sub-Saharan Africa even living near these sources will not help as the methods you have to then purify are not reliable or not safe enough. In countries which are in this economic state with poor water quality, the number of deaths and illnesses caused by badly disinfected drinking water means that the by-products (also known as carcinogens) caused when chlorine reacts with chemicals in the water or in the body become less of a priority. Due to the great amount of poverty in this region, chlorine is a great option due to its price and accessibility, the average price for a water well is around 8,000 USD (£ 6,455.76) , whereas the average price for a chlorination service comes in at around £300-1500 depending on the requirements and the size of the water system that needs to be chlorinated.
To conclude what was said, although chlorine does come with its limitations just like every other method, disinfection by chlorine is still the best guarantee of microbiologically safe water, especially in countries in this region.
Why chlorine is not the best chemical to use in water treatments?
Chlorine is a highly effective method of disinfection. However, when travelling in pipes, if the source of water has higher levels of germs, they could react with chlorine which could produce small amounts of toxic chemicals called DBP’s (by-products) .
Another reason why chlorine is not the best chemical to use in water treatments is because the conditions need to be very specific for chlorine to work optimally; the pH needs to be just right as well as the temperature of the water which needs to be 18 degrees Celsius of higher, decreasing the temperature would increase contact time, the process must therefore be adapted to take into account all of these factors which can be a lengthy process and extremely hard to achieve, putting people at risk in their own homes.
Other effects that it can have on humans is that it has been reported that asthma can be triggered by exposure to chlorinated water . Episodes of dermatitis have also been associated with exposure to chlorine and hypochlorite.
Methods that could be used instead are: UV radiation, Ozonation, Reverse Osmosis, Sodium Ferrate and many more. All of these have their advantages and disadvantages, but the one that seems most like chlorine and has possibly the least amount of toxic products left after being used is Sodium Ferrate, which is capable of decomposing many toxic chemicals into less toxic products and destroying microorganisms. This new reagent also doesn’t form toxic substances in the process of water purification and scientists believe that it can also neutralise chlorine in water. This process is believed to be useful in countries with developed sewage systems, as well as regions requiring local treatments for drinking and wastewater.
Conclusion
In Conclusion, to sum up all the points made, I think that Chlorine is a great way for developing and poor countries like Yemen and Kenya to use, as it can be easily accessed and isn’t too expensive compared to other methods of sterilising and purifying water for example; water wells or boreholes, but, in countries like America and other developed countries I think Chlorine is not a necessity but a want because countries like that can get easier access than other countries to UV radiation, Ozonation, Reverse Osmosis, and Sodium Ferrate due to having an economy which is a lot more stable and has the money to afford these, and of course all of these methods still come with their benefits, limitations and of which can also be more expensive, but on the other hand has they have the same if not better results to chlorine.
It is difficult to give a grade out of 100 without knowing the specific requirements and grading criteria for the essay. However, this essay presents a clear understanding of the topic of chlorine in water treatment, providing a well-rounded discussion on both the chemical and ethical aspects of using chlorine. The essay presents a clear introduction, body, and conclusion and uses specific examples to support the claims made. The writing is clear and easy to understand, and the essay is well-organized and flows well. However, it would be beneficial if the essay would have had a stronger thesis statement and a more detailed conclusion. Overall, this essay would likely receive a high grade.
how would having too much sample in the melting point tube most likely affect a melting point measurement?
Having too much sample in the melting point tube most likely results in a lower melting point measurement.
The melting point as well as liquefaction point of a substance is the temperature at which it changes its state from solid to the liquid. At melting point the solid as well as liquid phase will exists in an equilibrium. The melting point of a will depends on pressure and it is usually specified at a standard pressure such as 100 kPa or 1 atmosphere.
The melting point will be lower than expected. This is because having more sample will causes the heat to spread out more slowly throughout the tube, which can raises the temperature at the point of the measurement as well as causes the sample to melt before to it reaches its actual melting point.
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what is the common name for sodium hydrogen carbonate ?
Answer: The common name for sodium hydrogen carbonate is baking soda.
I hope this helps!
Explanation: It is a chemical compound with a formula called NaHCO3. It consists of sodium cation or Na+ and a bicarbonate anion HCO3-
Calculate number of moles in
3.01 X 10^23 atom of moles
of rubidium
Answer:
There are 0.5 moles of rubidium
Explanation:
According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23}6.023×10
23
of particles.
To calculate the moles, we use the equation:
\text{Number of moles}=\frac{\text{Given atoms}}{\text {avogadro's number}}=\frac{3.01\times 10^{23}}{6.023\times 10^{23}}=0.5molesNumber of moles=
avogadro’s number
Given atoms=
6.023×10
23
3.01×10
23
=0.5moles
Thus there are 0.5 moles of rubidium
how can a small contained fire be extinguished most easily?
If the fire is contained in a beaker or a small vessel, it can often be extinguished by covering the vessel with a wire gauze or addition of sand or dry ice. If the fire is in a larger vessel or has spread, dry ice is very effective.
What is meant by vessel?
A ship or a sizable boat is a vessel. a tube that the body's blood travels through to circulate. A network of arteries, arterioles, capillaries, venules, and veins make up the blood vessels.Your body's blood travels through blood arteries, which act as conduits. They create a circuit-like closed loop that starts and finishes at your heart.Your circulatory system is made up of blood vessels and heart vessels. About 60,000 miles of blood arteries make up your body.The main type of water-conducting cell in flowering plants is called a vessel cell. Vessel cells are modified tracheids in which the end walls have lost their primary membranes, allowing for direct, unhindered connections for water transport between the cells.To learn more about vessel refer to
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A macromolecule that exists with backbone where the functional groups are the amine and the carboxylic acid: ___
protein. An organic substance with a carboxyl functional group is known as a carboxylic acid. They are abundant in nature and are also synthesized by humans. Carboxylic acids deprotonate.
to generate a carboxylate anion with the general formula R-COO-, which can form a range of useful salts such as soaps. A carboxylic acid is an organic acid with a carboxyl group (C(=O)OH)[1] linked to an R-group in organic chemistry. A carboxylic acid has the generic formula RCOOH or RCO2H, where R refers to the alkyl, alkenyl, aryl, or other group. Carboxylic acids are found in abundance. Amino acids and fatty acids are two important examples. A carboxylate anion is formed when a carboxylic acid is deprotonated.protein. An organic substance with a carboxyl functional group is known as a carboxylic acid. They are abundant in nature and are also synthesized by humans. Carboxylic acids deprotonate.
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if zinc replaces iron, iron replaces lead, and zinc replaces lead in a chemical reaction, the order of activity from most active to least active is
In a chemical reaction, if zinc replaces iron, iron replaces lead, and zinc replaces lead, the order of activity from most active to least active is zinc, iron, and then lead.
This is because zinc is more active than iron, and iron is more active than lead. This is due to the electronegativity of the elements, where zinc is the most electronegative, followed by iron and then lead.
The higher the electronegativity, the more active the element is in a chemical reaction.
This is because zinc has the highest reactivity compared to iron and lead, meaning that it has the greatest ability to take the place of iron and lead in the reaction.
Iron has the second highest reactivity and is able to take the place of lead, and lead has the lowest reactivity and is the last to react. This is why zinc is the most active, iron is second most active, and lead is least active.
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When using a Van de Graaff generator charges repel because all the charges are all
When using a Van de Graaff generator charges repel because all the charges are negatively charged.
Why does the Van de Graaff become negatively charged?The Van de Graaff become negatively charged, because the rubber belt is an insulator and a poor conductor of electricity, the positive charge does not spread evenly across the belt.
Instead, as a result of electric induction, the inside of the belt remains positively charged, while the outside of the belt becomes negatively charged.
Thus, When using a Van de Graaff generator charges repel because all the charges are negatively charged.
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we place 2kg textbook and a 4kg textbook at least 2cm away from each other. After a while we move the two textbooks so now they are 8cm away from eachother. Explain which textbook has a larger gravitaional pull and how do the different distances affect it?
Textbooks that have a greater gravitational pull are 4kg textbooks and the distance of objects that have a greater gravitational pull is 2cm.
Newton's law of gravity is Newton's conclusion that the gravitational attraction acting between two objects is proportional to the mass of each object and inversely proportional to the square of the distance between the two objects. So, a 4kg textbook will have a greater gravitational pull than a 2kg textbook.
The strength of the earth's gravitational force on objects is affected by the distance of the object from the center of the earth. The farther an object is from the center of the earth, the smaller its gravitational force.
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draw the major organic product formed in the reaction.conc. H+ OH
In the reaction, the major product formed is Oxygen with a positive charge on it, it is very unstable because it is an electronegative atom.
In the first stage of the reaction, protonation with the lone pair of electrons on the oxygen atom takes place and an unstable structure of oxygen is obtained which carries a positive charge. The instability is due to the opposite nature of the oxygen atom.
In the next step, hydrogen is removed from the adjacent carbon along with the removal of water giving us the final product.
In chemistry, protonation aka hydronation is the addition of a proton (H+) to an atom, molecule, or ion, forming a conjugate acid. Protonation often occurs in the reaction of an acid with a base to form a salt.
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How is kinetic energy formula derived?.
The kinetic energy formula is derived from the principle of conservation of energy.
The principle states that energy cannot be created or destroyed, it can only be converted from one form to another.
When an object is in motion, it has the potential to do work on other objects due to its motion. This potential energy is called kinetic energy.
The formula for kinetic energy is derived by considering an object of mass m, moving at a velocity v. If a net force F is applied to the object over a distance d, the work done on the object is given by the equation:
work = force x distance x cos(theta) where theta is the angle between the force and the displacement.
If we consider the force to be equal to the mass of the object multiplied by its acceleration, F = ma, and if we consider the displacement to be equal to the velocity of the object multiplied by the time, d = vt, then we can substitute these values into the equation for work.
By simplifying the equation, we get the kinetic energy formula as:
KE = 1/2 * m * v^2
Where KE is the kinetic energy, m is the mass of the object and v is the velocity of the object.
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The wavelength of visible light varies from 0.40 μm to 0.70 μm as the color of the light changes from violet to red. Calculate the energy of a photon whose wavelength is 0.61 μm.
The energy of a photon whose wavelength is 0.61 μm is 3.25 * 10⁻¹⁹J.
What is the energy of a photon?The energy that a single photon carries is known as photon energy.
Energy is inversely correlated with wavelength because it is directly proportional to the electromagnetic frequency of the photon. The energy of a photon increases with its frequency.
The formula for calculating the energy of a photon, E, is given below:
E = hc/λ
where:
h is Planck's constant = 6.626 * 10⁻³⁴ Js
c is the speed of light = 3.0 * 10⁸m/s
λ is the wavelength of the photon = 0.61 μm or 6.10 * 10⁻⁷ m
E = 6.626 * 10⁻³⁴ * 3.0 * 10⁸ / 6.10 * 10⁻⁷ m
E = 3.25 * 10⁻¹⁹J
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c) Calculate the frequency of light required to remove the valence electron(s).
The frequency of light required to remove the valence electron(s) from an atom is known as the ionization energy. The ionization energy is dependent on the atomic structure and is specific to each element.
What is calculation of frequency of light?This energy can be calculated using the equation: E = hf = hc/λ, where E is the ionization energy, h is Planck's constant, f is the frequency of the light, c is the speed of light, and λ is the wavelength of the light.E = hf = hc/λwhere E is the ionization energy, h is Planck's constant, f is the frequency of the light, c is the speed of light, and λ is the wavelength of the light.To calculate the frequency of light required to remove the valence electron(s) from an atom, the ionization energy of the atom must be known, and then the equation can be rearranged to solve for frequency:f = E/h = hc/λEIt is important to note that the ionization energy for each element is unique and can be found in periodic table or in the reference book.To learn more about frequency of electron refer:
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compare the size of ions to the size of atoms from which they form
The negative ion is always significantly bigger than the atom it originated from. In actuality, the negative ion may be larger than the neutral atom by a factor of more than two.
Ions are defined as atoms that gain or lose electrons. When an atom receives or loses its outermost electron, its size (or radius) changes. This change is known as the ionic radius (s). A negatively charged ion known as an anion is created when an atom receives an extra electron, increasing its ionic radius. Positive ions are smaller than their parent atoms, whereas negative ions are bigger. Trend over a time period: Moving across the table from left to right causes the ionic radius to shrink. In any given period, negative ions are always bigger than positive ions.
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The kinetic-molecular theory of gases assumes that ideal gas molecules (1) are constantly moving; (2) have negligible volume; (3) have negligible intermolecular forces; (4) undergo perfectly elastic collisions; and (5) have an average kinetic energy proportional to the ideal gas's absolute temperature.T/F
Yes, all of the information provided about the kinetic-molecular theory of gases is correct and True.
The kinetic theory of gases is a theory based model that describes the molecular composition of gas in terms of a wide number of submicroscopic particles like atoms and molecules.
The theory goes on to explain that gas pressure is caused by particles colliding with each other and the container's walls. Temperature, volume, and pressure are all defined by kinetic theory of gases, as are transport properties like viscosity and thermal conductivity, as well as mass diffusivity. The kinetic-molecular theory explains all of the properties which are associated with this microscopic phenomenon. The theory is important because it aids in the development of correlations between macroscopic properties and macroscopic phenomena.
In addition the theory also explains other related phenomenon like the Brownian motion.
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Consider the titration of a 35.0-mi sample of 0.175 M HBr with
0.200 M KOH. Determine each quantity.
a. the initial pH
b. the volume of added base required to reach the equivalence point
c. the pH at 10.0 mL of added base
d. the pH at the equivalence point
e. the pH after adding 5.0 mL of base beyond the equivalence point
The initial pH of the solution is 1.76.
A 35.0-mi sample of 0.175 M HBr was titrated with 0.200 M KOH. Figure out each quantity.The volume of added base required to reach the equivalence point is 17.5 mL.The pH at 10.0 mL of added base is 7.94.The pH at the equivalence point is 12.75.The pH after adding 5.0 mL of base beyond the equivalence point is 13.63.The initial pH of the solution is acidic. Since HBr is a strong acid, it will completely dissociate in solution and the pH of the solution can be calculated using the concentration of hydrogen ions: pH = -log[H+] = -log(0.175 M) = 1.75.The volume of base needed to reach the equivalence point can be calculated using the stoichiometry of the reaction. The moles of HBr reacted are equal to the moles of KOH added, so the volume of KOH needed to neutralize the HBr is equal to the moles of HBr divided by the molarity of the KOH, or V = (0.175 mol/0.200 M) = 0.875 L.The pH at 10.0 mL of added base can be calculated using the Henderson-Hasselbalch equation. Assuming that the volume of the solution is not changed by the addition of the base, the pH can be calculated as pH = pKa + log([base]/[acid]) = -log(0.175 M) + log(0.2 M/0.175 M) = 1.87.To learn more about The initial pH of the solution refer to:
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assuming equal concentrations and complete dissociation, arrange these aqueous solutions by their freezing points.NaNO3 K2SO4 Li3PO4
The aqueous solutions by their freezing points are Li3PO4, K2SO4 ,
NaNO3.
What is concentration ?
The volume of solute that has been dissolved in a specific volume of solvent or solution is known as the concentration of a solution. A solution with a significant concentration of dissolved solute is one that is concentrated. When there is just a minimal amount of dissolved solute in a solution, it is said to be diluted.
What is aqueous solution ?
Solute (dissolved) ions and molecules are encircled by water molecules and absorbed into the web of bonds in the water, in other words.
Therefore, aqueous solutions by their freezing points are Li3PO4, K2SO4 ,
NaNO3.
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(-giant-covalent simple molecular
giant-ionie lattice
giant
Complete the following sentences by writing one of the letters A, B, C, D or E.
The substance likely to be a gas is substance
The substance which could be diamond is substance .......
The substance with ionic bonding is substance
The substance which is a malleable solid is substance
Covalent bonding can be found in five different substances, including hydrogen (H2), oxygen (O2), nitrogen (N2), water (H2O), and methane (CH4).
How many covalent compounds can you think of?Covalent bonding can be found in five different substances, including hydrogen (H2), oxygen (O2), nitrogen (N2), water (H2O), and methane (CH4). The term "covalent bond" refers to a chemical bond when two atoms share electron pairs.A large ion structure makes up an ionic molecule. Strong electrostatic interactions between oppositely charged ions hold together ionic substances. Because so much energy is required to break the numerous strong bonds in these compounds, they have high melting points and high boiling points.Covalent bonding can be found in five different substances, including hydrogen (H2), oxygen (O2), nitrogen (N2), water (H2O), and methane (CH4).To learn more about Covalent bonding refer to:
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Use the reaction below for the combustion of ammonia gas to
produce nitrogen monoxide and water vapor.
4NH3(g) + 302(g) → 4NO(g) + 6H₂O(g)
What volume of O2 is needed to react fully with 720. mL of
NH3?
a) 960 mL O2
b) 1.02 L O2
c) 720. mL O2
d) 540. mL O2
how should loose lead particles be removed from protective clothing
By purchasing a general detergent with surfactant, loose lead particles can be taken off of protective equipment.
What is the proper way to remove loose lead particles?Lead contamination can be removed with the use of a vacuum cleaner with a High Efficiency Particulate Air Filter (HEPA). Small pieces of lead can be captured and held by a specific filter in the HEPA vacuum. To clean up the wash or rinse water, another choice is to use a wet/dry vacuum on the wet setting.Surfactant, which is absent from organic or natural detergents, is necessary for lead to be cleaned; otherwise, it won't be removed. You'll need to find a compromise in this situation and get a generic detergent that contains surfactant.By purchasing a general detergent with surfactant, loose lead particles can be taken off of protective equipment.To learn more about loose lead particles refer to:
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21. Which one of the following is not a form of chemical bonding? A. covalent bonding B. ionic bonding C. hydrogen bonding D. metallic bonding
In the video, we use the atomic model to describe pressure as resulting from?
The atomic model which has been used to describe the pressure resulting from the force from the collision of the gas molecules with the walls of their container.
In the container, the molecules of a gas having their own kinetic energy. The molecules move from one place to another as well as in the process, they will collide with the walls of the container. The collision will results in the formation of a momentum by the particle against the wall of the container. The perpendicular force exerted by the gas molecules will be divided by the area, which will describe the pressure.
Thus, the atomic model has been also used to describe the pressure resulting from the force from the collision of gas molecules with the walls of their container.
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Does molar mass determine density?.
Answer:
Since gases all occupy the same volume on a per mole basis, the density of a particular gas is dependent on its molar mass. A gas with a small molar mass will have a lower density than a gas with a large molar mass
What is the minimum internal temperature that the turkey must reach?
The minimum internal temperature that the turkey must reach is 165°F or 73.9°C as measured with a food thermometer.
A food thermometer is a thermometer specifically used to measure the temperature of food to make sure the food is cooked. There are various types of food thermometers that can be used to measure food temperature according to the type of food such as meat thermometers, skewer thermometers and oven thermometers.
The minimum internal temperature for a turkey that must be reached to ensure it is cooked is 165 °F or or 73.9 °C. Likewise, the stuffing that is put into the turkey must follow the temperature of the turkey to be removed from heating, which is at 165 °F. Because if it is removed before the temperature is 165°F, the turkey is not fully cooked and can cause the bacteria that are still able to survive so that those who consume the stuffing can be poisoned.
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the smallest subatomic particle that makes up an atom, and carries a negative charge____
The smallest subatomic particles, electrons are negatively charged and comprise an atom. Electrons are located in the area termed the electron cloud that surrounds the nucleus of an atom.
The set of primary particles that comprise an atom includes many other particles than the electron. Like other elementary particles, electrons can collide with other particles and, when they are diffracted, exhibit wavelike characteristics. The smallest subatomic particles, electrons are negatively charged and comprise an atom. A particle that makes up an atom is referred to as a subatomic particle in the physical sciences. According to the Standard Model of particle physics, a subatomic particle might either be a composite particle made up of other particles or it might not.
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Calculate the molecular formula for a compound with a composition of 26.7% C, 2.22% H, and 71.1% O and a molecular weight of 90 g/mol. Please show all work.
1 mol C= 12.0 g C
1 mol H=1.0 g H
1 mol O=16.0 g O
Answer:
I hope this is right :)
empirical formula ---› molecular formula
Body mass index, bmi, is calculated using the formula \mathrm{bmi}=\dfrac{703w}{h^2}, where w is weight in pounds and h is height in inches. Anita is 5 ft 5 in. Tall. How much does she need to weigh for her bmi to be 20? round to the nearest tenth.
Using body's BMI, Anita weighs 123.92 pounds.
What does a body's BMI mean?Body Mass Index, or BMI, is a rough indicator of an individual's weight status. The BMI is a reliable indicator of your risk for diseases that can develop as a result of having a higher body fat percentage. Your chance of developing certain conditions like heart disease, high blood pressure, type 2 diabetes, gallstones, respiratory issues, and some malignancies increases with your BMI.
Body mass index (BMI) is calculated using the formula [tex]\frac{w}{h^{2} } \times 703[/tex]
Anita is 5 ft 5 in.
Height of Anita in inches = 66 inches
In accordance with the query, we have -
Body mass index formula: [tex]\frac{w}{h^{2} } \times 703[/tex]
BMI = 20
BMI = [tex]\frac{w}{h^{2} } \times 703[/tex]
⇒ 20 = [tex]\frac{w}{66^{2} }[/tex]× 703
⇒ 123.92 pounds
Consequently, Anita weighs 123.92 pounds.
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Rearrange the work equation and show the equation for force.
Work equation: W=Fxd
The equation for force when derived from the equation for work is F = W / D
How to find the equation for force ?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull.
The work equation states that the work done (W) is equal to the force (F) applied to an object multiplied by the distance (d) over which the force is applied, and is given by the equation:
W = F x d
The equation for force can be obtained by rearranging the work equation to solve for F:
F = W / d
This equation shows that force is equal to the work done divided by the distance over which the force is applied. So, if the work done and the distance are known, the force can be calculated by using this equation.
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