Answer:
Hi there, The correct answer is, OPT A
Explanation:
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The bowl of fruit has a mass of 2.2 kg.
What net force must act on the bowl of fruit to make it accelerate to the right
at a rate of 4.4 m/s2? (Hint: Use F = ma.)
A. F = 9.68 N right
B. F = 9.68 N left
C. F = 6.60 N left
D. F= 6.60 N right
Taking into account the Newton's second law, the correct answer is option A. F = 9.68 N right
In first place, acceleration in a body occurs when a force acts on a body.
Newton's second law states that a force will change the speed of an object because the speed and/or direction will change. These changes in velocity are called acceleration.
So, Newton's second law defines the relationship between force and acceleration mathematically. This law says that the acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object
Mathematically, Newton's second law is expressed as:
F= m×a
where:
F = Force [N] m = Mass [kg] a = Acceleration [m/s²]In this case, you know:
F= ? m= 2.2 kg a= 4.4 m/s²Replacing in Newton's second law:
F= 2.2 kg× 4.4 m/s²
Solving:
F= 9.68 N
Finally, As the bowl of fruit accelerates to the right, the correct answer is option A. F = 9.68 N right
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What intermolecular forces are in solid NaCl salt?
The intermolecular forces are in the solid NaCl salt is ion - ion forces or the dipole - dipole forces of the interaction.
The Na is the metal and is capable of the donating the electrons and the Cl is the non metal and have capability of accepting the electrons. This makes the Na to form the cation and the Cl to make the anion. The dipole - dipole forces are present in the molecule which contains the oppositely charged ions one is positively charged ion and the other is the negatively charged ion.
Thus , the NaCl solid has the ion - ion intermolecular forces of the interaction .
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is density a chemical or physical property of a substance?
Answer:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.
I hope this helps you understand! <3
Write each formula to solve for density, volume and mass.
why metals should not be disposed in landfills
Answer:
Because metal can not decompose!
if a carbon atom is 135 pm wide, how fast must an electron be traveling in order to resolve a single carbon atom?
The electron must be traveling at a minimum speed of approximately 5.62 million meters per second to resolve a single carbon atom.
What is de Broglie wavelength?The de Broglie wavelength is given by the formula λ = h/p, where λ is the wavelength, h is Planck's constant, and p is the momentum of the electron.
To calculate the minimum speed required, we can equate the de Broglie wavelength of an electron with the size of a carbon atom, and solve for the velocity.
The size of a carbon atom is given as 135 pm. Converting this to meters, we get:
135 pm = 135 x 10^-12 m
Substituting this value for λ, we get:
λ = h/p = 135 x 10^-12 m
The momentum of the electron can be written as p = mv, where m is the mass of the electron and v is its velocity.
Substituting this value for p, we get:
λ = h/mv = 135 x 10^-12 m
Solving for v, we get:
v = h/(mλ) = (6.626 x 10^-34 J s)/(9.109 x 10^-31 kg)(135 x 10^-12 m)
v ≈ 5.62 x 10^6 m/s
Therefore, the electron must be traveling at a minimum speed of approximately 5.62 million meters per second to resolve a single carbon atom.
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Aly's science class was looking at bacteria through a microscope. Aly's teacher said some bacteria can be as small as 0.00365 cm long. What is the length of the bacteria written in scientific notation?
Answer:
\(0.00365\ cm=3.65\times 10^{-3}\ cm\)
Explanation:
Aly's teacher said some bacteria can be as small as 0.00365 cm long.
In this problem, we need to write the length of the bacteria written in scientific notation. Any number can be written in the form of scientific notation as follows :
\(N=a\times 10^b\)
a is a real no and b is an integer
In the given number, there are two zeroes before 3. We need to shift the decimal after 3. It can be done as follows :
\(0.00365\ cm=3.65\times 10^{-3}\ cm\)
Hence, this is the required solution.
what is the difference between biology and anatomy?
Answer:
Biology is the study of nature, like plants and animals, while anatomy is the study of the human body, like our bones and muscles.
Explanation:
Hope it helped!
Which bonds involving H below would be capable of forming a hydrogen bond with another molecule?Choose one or more:a. O-Hb. F-Hc. B-Hd. C-He. N-H
The bonds involving H that are capable of forming hydrogen bonds are O-H and N-H.
The only bond involving H that is capable of forming a hydrogen bond with another molecule is option A, O-H. This is because hydrogen bonding occurs between a hydrogen atom covalently bonded to a highly electronegative atom, such as oxygen or nitrogen, and another highly electronegative atom in a separate molecule. In option A, the oxygen atom has a high electronegativity, which creates a partial negative charge, and the hydrogen atom has a partial positive charge. This allows for hydrogen bonding to occur between molecules containing O-H bonds.Option B, F-H, is a polar covalent bond, but fluorine is not electronegative enough to form a hydrogen bond. Option C, B-H, is also a polar covalent bond, but boron is not electronegative enough to create a partial negative charge, and thus cannot form a hydrogen bond. Option D, C-H, is a nonpolar covalent bond and cannot form hydrogen bonds. Option E, N-H, is another bond capable of forming hydrogen bonds, as nitrogen has a high electronegativity, creating a partial negative charge, and the hydrogen atom has a partial positive charge.
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Hello can you please solve the question below in the photo
Using the relationship between number of moles, concentration and volume, the amount of sal^2-(aq) transferred to the 10 ml volumetric flask is 6.0 × 10^-6 mol.
What amount (in moles) of sal²⁻(aq ) was transferred to the 10 ml volumetric flask?Since 0.5 ml of the stock solution was transferred to a 10 ml volumetric flask, the volume of the transferred solution is:
0.5 ml = 0.5 × 10^-3 L = 5.0 × 10^-4 L
To determine the amount of sal^2-(aq) transferred to the 10 ml volumetric flask, we can use the formula:
amount (in moles) = concentration × volume
where concentration is in moles per liter (mol/L) and volume is in liters (L).
The concentration of the stock solution is:
concentration = 1.20 × 10^-3 mol / 0.1 L = 1.20 × 10^-2 mol/L
Using this concentration and the volume of the transferred solution, we can calculate the amount of sal^2-(aq) transferred to the 10 ml volumetric flask:
amount (in moles) = concentration × volume
= 1.20 × 10^-2 mol/L × 5.0 × 10^-4 L
= 6.0 × 10^-6 mol
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Please help!! any inappropriate answers will be reported
Which of the below best explains the relationship between the surface area of a solid solute and the dissolution (rate it dissolves) in a solvent
Question 3 options:
As the surface rate decreases the solid dissolves faster
As the surface area increases the solid dissolves faster.
As the surface area increases the solid dissolves slower.
Surface area has no affect on the dissolving rate of the solid.
1. How does Mr. Ravenell describe the essence of the black barbershop? Why
considered a safe haven?
2. What health topics were often discussed in the barbershop?
3. Why does Denny Moe say that a lot of black men trust their barbers more than their doctors?
4. How has Mr. Ravenell's work combined healthcare and barbershops?
5. What are the benefits of training barbers to talk to their clients about health issues and help with their healthcare?
This exercise is from Barbershop can keep men healthy by Joseph Ravenell, and is related to High Blood Pressure.
How does Mr. Ravenell describe the essence of the black barbershop?Mr. Ravenell describes the essence of the black barbershop as a place where there is friendship, trust and cooperation, and peace. (1a)
He considers it a safe haven because is void of stress and societal threats. (1b)
What health topics were often discussed in the barbershop?Some of the health-related topics that were discussed in the barbershop include but are not limited to:
Denny states that black men trust their barbers more than their doctors because most of them relate more with their barbers than with their doctors.
How has Mr. Ravenell's work combined healthcare and barbershops?Mr. Ravenell taught barbers how to measure blood pressure, and how to counsel their customers to go see a doctor if their blood pressure was too high.
What are the benefits of training barbers to talk to their clients about health issues and help with their healthcare?It was discovered that the number of those whose blood pressure were controlled in the 18 shops that were studied for one year were higher in the shops where the barbers had been trained.
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Which one do I pick?
Answer:
i would go for the 2nd as far as i know they were a big continent and an earthquake separes them all
Other than color, what evidence can you use to identify chemical changes?
Explanation:
There are several pieces of evidence that can be used to identify chemical changes, other than a change in color. Some of these include the production of a gas, the formation of a precipitate, a change in temperature, and a change in the state of matter (e.g. from a solid to a liquid or vice versa). For example, if a solid substance is added to a liquid and bubbles of gas are produced, this is evidence of a chemical change. Similarly, if two clear solutions are mixed together and a solid precipitate forms, this is also evidence of a chemical change. Additionally, if a substance is heated and it changes from a solid to a liquid or from a liquid to a gas, this is also evidence of a chemical change.
Please help its easy but i don't feel like doing it
Looking at the hills for the drawing of the roller coaster above complete the following statements with the correct answers.
At Point___ will have the most potential energy (the most ability to do work) because it is the (Highest or lowest) point on the coaster.
At point___ the roller coaster would have the most kinetic energy (energy of moving) because it will be going the (Fastest or slowest)
Answer:
first one is a second one is e
Explanation:
Balance the following chemical equation. Choose the correct coefficients in the balanced equation in order. *
4, 3, 2
2, 4, 2
1, 1, 1
3, 2, 3
Answer: 4,3,2
Explanation:
Air is an important nonliving part of an ecosystem.
What does air do for an ecosystem?
A.
Air provides gases used by the plants and animals in an ecosystem.
B.
Air is used by plants to carry and move the nutrients they need to survive.
C.
Air creates light that the animals use to make food through photosynthesis.
D.
Air helps anchor the plants to keep them in place.
Plants need air to transport and move the nutrients they require to survive. The right response is B.
The series of interactions between species and between organisms and their environment characterise an ecosystem. The creatures that make up air ecosystems can support life in the atmosphere. This medium has the advantages of having few predators, no mobilisation barriers, and easy prey location.
The ability of ecosystems to function and thrive is damaged by air pollution, especially sulphur and nitrogen emissions as well as ground-level ozone. Both sulphur dioxide and nitrogen oxide emissions accumulate as "acid rain" on flora, soil, and water, which makes the environment more acidic.
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Explain solubility of sugar and carbon dioxide in water
Answer:
Sugar and carbon dioxide have different solubilities in water due to their different chemical properties and intermolecular forces.
Sugar (sucrose) is a polar molecule that can form hydrogen bonds with water molecules. This allows sugar to dissolve readily in water, as the water molecules surround the sugar molecules and form a solution. However, the solubility of sugar in water is limited, as the water molecules can only form a certain number of hydrogen bonds with the sugar molecules. This is why, for example, if you add too much sugar to a cup of water, the excess sugar will not dissolve and will settle at the bottom of the cup.
Carbon dioxide (CO2), on the other hand, is a nonpolar molecule that does not have a charge distribution that allows it to interact strongly with water molecules through hydrogen bonding. Instead, carbon dioxide dissolves in water through weak intermolecular forces, such as van der Waals forces, which arise from temporary dipoles that form as the molecules move and interact with each other. These weak interactions make carbon dioxide only moderately soluble in water, and the solubility decreases as the temperature increases or the pressure decreases.
In summary, the solubility of sugar and carbon dioxide in water depends on the chemical properties and intermolecular forces of the substances, with sugar being more soluble due to its polar nature and ability to form hydrogen bonds with water, and carbon dioxide being less soluble due to its nonpolar nature and weak intermolecular interactions with water.
Explanation:
If you have A 6-g sugar cube (C12H22011) and dissolved in a cup of hot tea. The
solution is 600 g. What is the percent by mass of the sugar?
1%
10%
C 60%
100%
The percentage of sugar in the solution is 1%
To solve this question, we need to find the percentage of 6 out of 600.
Data given;
mass of sugar = 6gmass of solution = 600gWhat is PercentageThis is the rate or proportion of a substance in the total value and multiplied by 100.
The percentage of sugar in the solution is calculated by
\(\frac{6}{600} * 100 = 1 % \)
The percentage of sugar in the solution is 1%
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a(n) is any material added to natural or lp gases in small concentrations to impart a distinctive odor.
An odorant is any material added to natural or LP gases in small concentrations to impart a distinctive odor.
What is an odorant?Odorant is a substance that has a distinctive smell, especially one added to something (such as household gas) for safety purposes.
A common example of odorant used is the additive, mercaptan, which is mixed in to give LPG a distinctive and unpleasant smell, making leaks readily detectable.
LPG is very dangerous, because if it leaks, it can cause terrible fires and devastating explosions. However, to prevent this, ethyl mercaptan (odorant) is added to the gas, which possesses that strong odor of rotten cabbages.
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4. The elements calcium and strontium have similar chemical properties because they both have the same
A) atomic number
B) mass number
C) number of valence electrons
D) number of completely filled sublevels
Answer: option C
Explanation: As they belong to same group
Where to start as a beginner in chemistry?
Answer:
Maybe try a Course Outline or talk to a professional for advice.
Explanation:
F2 + 2HCl + Cl2 + 2HF I need help what are the answers to these questions?
2. What is reduced?
1. What is oxidized?
3. What is the oxidizing agent?
4. What is the reducing agent?
5. Write the oxidation half-reaction.
6. Write the reduction half-reaction.
8. What loses electrons?
7. What gains electrons?
10. What has a decrease in oxidation #?
9. What has an increase in oxidation #?
In the given reaction fluorine is reduced and chlorine is oxidized.
What is oxidation and reduction?Oxidation is a process in which addition of oxygen or removal of hydrogen and electron takes place, while reduction is a process in which addition of hydrogen & electrons or removal of oxygen takes place.
Given chemical reaction is:
F₂ + 2HCl → Cl₂ + 2HF
In the above reaction fluorine is reduced as it accepts an electron and increase in it its oxidation state takes from 0 to -1, which shows reduction.In the reaction chlorine is oxidized as it losses an electron and decrease in its oxidation state takes from -1 to 0, which shows oxidation.Oxidation half reaction is:F₂ + 2e⁻ → 2F⁻
Reduction half reaction is:2Cl⁻ → Cl₂ + 2e⁻
Hence, fluorine is reduced and chlorine is oxidized in the given reaction.
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A car travels 97.2 km on 7.88 L of gasoline. What is the gas mileage for the car in miles per gallon.
The gas mileage for the car is approximately 29.01 miles per gallon.
First, we need to convert the distance traveled from kilometers to miles, and the volume of gasoline from liters to gallons, as follows:
97.2 km = 97.2/1.60934 miles ≈ 60.422 miles
7.88 L = 7.88/3.78541 gallons ≈ 2.082 gallons
Therefore, the gas mileage for the car in miles per gallon can be calculated by dividing the distance traveled by the volume of gasoline used, as follows:
Gas mileage = Distance traveled / Volume of gasoline used
= 60.422 miles / 2.082 gallons
≈ 29.01 miles per gallon
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If i shake ethanol and oil in a test tube and then add water what would be my result?
If you shake ethanol and oil in a test tube and then add water, you would likely see the water and ethanol mix together, while the oil remains separate.
This is because ethanol and water are miscible, meaning that they can mix together in any proportion to form a homogenous solution. Oil, on the other hand, is immiscible with water, meaning that it does not dissolve in water and will instead form a separate layer on top of the water.
What is the experiment about?When ethanol and water are mixed together, the ethanol molecules become surrounded by water molecules, and the mixture becomes homogenous.
This is because the ethanol molecules are polar, meaning that they have a positive end and a negative end, and the water molecules are also polar, with a positive end and a negative end. The positive end of the ethanol molecule is attracted to the negative end of the water molecule and vice versa, so the two substances can mix together easily.
Oil, on the other hand, is nonpolar, meaning that it does not have positive and negative ends. As a result, it does not interact with water molecule
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How can the shape of a molecule determine its polarity.
Answer:
Letter D
Explanation:
How should you remove a beaker from a hot plate after heating it?.
Answer:
Explanation:
you will have to grabe a towle or a meten and take it off
NEED ASAP!
Describe how scientific discoveries have changed our culture, national and international legislation.
Answer:
discoveries that can change little aspects of our daily lives or finding cures for diseases that have hounded humanity, scientists have been hard at work trying to push us toward a brighter future.
Explanation:
thats what i got from my research :D
A voltaic cell consists of an mn/mn2+ half-cell and a pb/pb2+ half-cell. Calculate [pb2+] when [mn2+] is 1. 6 m and e cell is 0. 44 v
The concentration of Pb2+ can be calculated using the Nernst equation: Ecell = E°cell - (RT/nF) * ln(Q) Given Ecell = 0.44 V, we can rearrange the equation to solve for ln(Q): ln(Q) = (E°cell - Ecell) * (nF/RT) The balanced equation for the reaction in the cell is The concentration of Pb2+ is approximately 3.98 x 10^-8 M.
The Nernst equation relates the cell potential (Ecell) to the standard cell potential (E°cell), the gas constant (R), the temperature (T), the number of electrons transferred (n), the Faraday constant (F), and the reaction quotient (Q). By rearranging the Nernst equation and substituting the given values, we can solve for ln(Q). In this case, the reaction involves the transfer of 2 electrons, and we can calculate ln(Q) as -7.4. Since Q is equal to the concentration of Pb2+, we can find the concentration by taking the antilog of -7.4, which yields approximately 3.98 x 10^-8 M. Therefore, the concentration of Pb2+ in the voltaic cell is approximately 3.98 x 10^-8 M.
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Oxygen has a boiling point of 90.19k. What is the temprature in farenheit
Answer: −182.96 °C; −297.33 °F
I think
Answer:
162374 farenheit
Explanation:
You need to convert the 90.19k to Farenheit.
You can even use google, but if you need the formula it's (0°C × 9/5) + 32 = 32°F