Pls help I will give brainpower to who ever. Helps

Answer:

The potential energy of the two vehicles increased because they were moved against the magnatic forces. The potential energy of the pink car increased more then the potential energy of the purple car because the pink car was closer to the center magnet.

Explanation: I had this same exact question on a quiz and this was my response and I got a 100%

The effects of the movement of the cars closer to the center of the magnet are ;

A) The potential energy of the Two vehicles will be increased

B) The potential energy of one car ( pink car) will change more than purple car due to the distance between the pink car and the center magnet.

Potential energy is the energy contained in a body at rest, The increase in potential energy occur when an object continues to be at rest ( i.e. opposes movement ).

When the cars are moved closer to the center magnet the cars will oppose the motion because their movement is against the magnetic forces that exist between the center magnet and the cars ( i.e. like pole repel while unlike poles attract ).  so as Lucia moves the cars closer their potential energies will continually increase ( i.e. the closer the car the higher its potential energy ).

Therefore the pink car been closer to the center magnet will experience a higher change in its potential energy than the purple car.

Hence we can conclude that The effects of the movement of the cars closer to the center of the magnet are ;  The potential energy of the Two vehicles will be increased, The potential energy of one car ( pink car) will change more than purple car due to the distance between the pink car and the center magnet.

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Answer: flowing water

Explanation:

\(\Huge{\green}\fcolorbox{blue}{cyan}{\bf{\underline{\red{\color{red}Answer}}}}\)

2.96V

Explanation:

\( \sf Mg(s) + 2 {Ag}^{ + } (0.0001M) \longrightarrow {Mg}^{2 + } (0.130M) + 2Ag(s) \\ \\ \sf E{ \degree} = 3.17V\)

As per the Nerest equation

\( \sf E_{cell} = E_{cell}{ \degree} - \frac{2.303RT}{nF} log \frac{ [M]}{ [{M}^{n + }] } \\ \\ \sf E_{cell} = E_{cell}{ \degree} - \frac{0.0592}{n} log \frac{[M]}{[ {M}^{n + } ]} \)

Here n = 2

at the n depicts the number of electrons

M = Mg as it is neutral after the product

while M+ = Ag2+ as it is positively charge after the product

\( \implies \sf E =3.17 - \frac{0.0592}{2} log \frac{[Mg]}{ {[{Ag}^{ + }]}^{2} } \\ \\ \sf \implies E = 3.17 - 0.0292 log[ \frac{0.130}{ {10}^{ - 8} } ] \\ \\ \sf \implies E = 3.17 - 0.0292 log[130 \times {10}^{5} ] \\ \\ \sf \implies E = 3.17 - 0.0292 \times 7.11 \\ \\ \sf \implies E = 3.17 - 0.2076 \\ \\ \sf \boxed {\pink \implies \pink{E = 2.96V}}\)

The yellowish-green powder is a compound because two elements (iron and bromine) chemically combined to form it.

A compound in chemistry is a substance formed by chemical bonding of two or more elements in definite proportions by weight.

This means that a compound is formed by the chemical bonding of two or more elements.

According to this question, a grey-coloured iron powder was heated in reddish-brown bromine vapour to form a yellowish-green powder.

The grey-coloured iron is an element that combined with the reddish-brown bromine gas. This suggests that two elements combined. It can be said to be a chemical reaction because a colour change was observed.

Therefore, the yellowish-green powder is a compound because two elements (iron and bromine) chemically combined to form it.

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(a) copper(II) carbonate. (b)CuSO3.

(c) MgCl2 and NaOH. (d) The compounds that would exist as ions when dissolved in water are KNO3 and CH3OH.

(a) Incorrect compound name:

The compound name that is not correct is copper(II) carbonate. The correct name for the compound with the formula CuCO3 is copper(I) carbonate. Copper(I) has a +1 oxidation state, and in this compound, it forms a carbonate ion (CO3) with a -2 charge, resulting in a neutral compound.

(b) Incorrect formula for a compound containing Cu2+ ion:

The formula for a compound containing the Cu2+ ion that is incorrect is CuSO3. The correct formula for copper(II) sulfite is CuSO3, where copper is in the +2 oxidation state and forms a sulfite ion (SO3) with a -2 charge. However, the compound CuSO3 does not exist.

(c) Crystalline, brittle solids at room temperature and electrolytes:

The compounds that should be crystalline, brittle solids at room temperature and are electrolytes are MgCl2 and NaOH. Magnesium chloride (MgCl2) is an ionic compound composed of magnesium cations (Mg2+) and chloride anions (Cl-). It forms a crystalline lattice structure and is a brittle solid at room temperature. When dissolved in water, it dissociates into ions, making it an electrolyte. Sodium hydroxide (NaOH) is also an ionic compound that exists as a crystalline, brittle solid at room temperature. When dissolved in water, it dissociates into sodium cations (Na+) and hydroxide anions (OH-), making it an electrolyte.

(d) Compounds that exist as ions when dissolved in water:

The compounds that would exist as ions when dissolved in water are KNO3 and CH3OH. Potassium nitrate (KNO3) is an ionic compound that dissociates into potassium cations (K+) and nitrate anions (NO3-) when dissolved in water. Hydrobromic acid (HBr) is a strong acid that ionizes completely in water, producing hydrogen cations (H+) and bromide anions (Br-). Methanol (CH3OH) is a covalent compound, but it can undergo partial ionization in water to produce hydronium cations (H3O+) and methoxide anions (CH3O-).

In summary, the compound name that is not correct is copper(II) carbonate. The incorrect formula for a compound containing the Cu2+ ion is CuSO3. The compounds that should be crystalline, brittle solids at room temperature and are electrolytes are MgCl2 and NaOH. The compounds that would exist as ions when dissolved in water are KNO3 and CH3OH.


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Answer:

               Molecular Formula = C₄O₂H₈

Explanation:

Molecular formula is calculated from following formula.

Molecular Formula = n(Empirical formula)

The formula for n is given as,

n = Molecular Formula Mass / Empirical Formula Mass

Molecular Formula mass = 88 g/mol

Empirical formula mass = 44

Putting values,

n = 88 / 44 = 2

Now,

Molecular Formula = 2(C₂OH₄)

Molecular Formula = C₄O₂H₈

In gas/vapor removing respirators, sorbents are used to interact with the gas or vapor molecule to clean the air.

Sorbents are materials that have high affinity towards a specific compound (a liquid or gas) to remove it from the environment. Sorbents are classified as being either inorganic or organic. Inorganic sorbents are based on minerals, while organic sorbents are derived from synthetic or natural materials. Sorbents used in respirators are used to interact with gas or vapor molecules to clean the air. Sorbent respirators are designed to capture and contain harmful gases and vapors before they enter the lungs of the wearer. The respirator will contain a sorbent material that is designed to react with specific types of gases or vapors. The sorbent material will interact with the gas or vapor molecule to clean the air.The sorbent materials used in gas/vapor removing respirators have high affinity towards a specific compound, which means that they are highly effective at removing specific gases or vapors. The sorbent materials used in respirators can be activated carbon, zeolites, or silica gel. The sorbent materials used in respirators are highly effective at removing a wide range of gases and vapors.

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Answer:

Belong to the same group.

Explanation:

Different elements are most likely to react in similar ways when they belong to the same group.

This is because the elements in the same group always have similar number of valence electrons which implies that they all have the same number of electrons in their outermost shell. For example,barium (Ba), beryllium (Be), calcium (Ca), magnesium (Mg), radium (Ra), strontium (Sr) all have 2 electrons in their outermost shell and thus they belong to group 2 of elements which are known as Alkaline earth metals and they all tend to react in the same manner with other substances

The elements that has been belonging to the same group have been able to react in similar ways.

The reactivity of the elements has been based on the presence of the valence electrons. The elements that has been belonging to the same group have consisted of the same number of valence electrons with the increase in the number of shells moving from left to right.

Thus, the elements that have been belonging to the same group have consisted of the same reactive properties.

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Answer:

c. the center of curvature of the two sides of the lens

Answer:

During the process of photosynthesis, cells use carbon dioxide and energy from the Sun to make sugar molecules and oxygen. These sugar molecules are the basis for more complex molecules made by the photosynthetic cell, such as glucose.

Explanation:

it is the full concept. I think it will help you.

Answer:

The correct option is;

The gas particles move faster, have the same molecular composition, and have weaker attractions between them than the liquid particles

Explanation:

The properties of the gas molecules in comparison to liquids are

1) The gas molecules are widely spread out

2) After evaporation and while in conditions favorable to the gaseous state, the kinetic energy of a gas is larger than the inter molecular attractive forces

3) A gas fills the container in which it is placed

For liquids

1) There are strong intermolecular forces holding the molecules together in a liquid

2) Liquid attractive forces in a liquid are strong enough to hold neighboring molecules

3) The volume of a liquid is definite.

The isotope notation : ⁷³₅₃X

Given

53 protons and 20 neutron

Required

The isotope notation

Solution

Isotopes are elements that have the same atomic number with a different mass number

The following element notation,

\(\large {{{A} \atop {Z}} \right X}\)

X = symbol of element

A = mass number

   = number of protons + number of neutrons

Z = atomic number

   = number of protons = number of electrons, on neutral elements

So the mass number of element = 53 + 20 = 73

Atomic number = 53

The symbol :

\(\large {{{73} \atop {53}} \right X}\)

The formula for a compound made from x2 and y- can be predicted using the crisscross method.

X2 has a charge of 2+ while y- has a charge of 1-. To form a neutral compound, the charges must balance each other.

To do this, the charge of x2 will become the subscript of y, and the charge of y- will become the subscript of x2.

Thus, the formula for the compound will be written as X2Y.

This indicates that two atoms of x combine with one atom of y to form the compound.

The compound may have different properties and characteristics depending on the identity of the elements X and Y.

Overall, the crisscross method is an effective way to predict the formula of an ionic compound.

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The concentration of the NaOH solution is 0.20M.

What is concentration?
If you have strong concentration skills, you can direct all of your attention to the current situation. Concentration can also be used to describe something that is grouped together, as well as the strength or density of a solution. People are said to be concentrated when they are in a specific area in large numbers. There might be a concentration of artists in your city who live in the riverside warehouses. A substance that is present in large quantities relative to the volume is said to have a high concentration in a solution. For example, the Great Salt Lake contains very few fish due to high concentration of salt. You can say that you pay attention well if you possess good concentration skills.

The concentration of the NaOH solution can be determined by finding the point where the titration is complete.
This can be determined by looking for the point on the graph where the volume of HCl added is equal to the volume of the NaOH solution initially in the flask.
In this case, the volume of HCl added is equal to 100.0 mL, which corresponds to a pH of 7.
At this point, the concentration of the NaOH solution can be determined by taking the ratio of the concentrations of the two solutions, which is 0.20M/ NaOH = 100.0mL/ V NaOH.
Therefore, the concentration of the NaOH solution is 0.20M.

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I hypothesis that the motion involving the balls in the experiement were moving to create data.

Explanation: your welcome

Answer:

As you move down the periodic table, atomic radii increase (more shells in the electron configuration), and the first ionization energy decreases. Electrons of the outermost shell of the atom are further away, and their attraction to the nucleus, therefore, decreases, making it easier for elements with high electronegativity such as Fluorine to form compounds with them.

Answer:

uhh its 497 miles

Explanation:

The right answer is Proton.

Additional Information:

There are three types of subatomic particles. They are:

Proton is a positively charged particle,Electron is negatively charged particle and Neutron is charge less.

Hope it will be helpful to you...

To find the final temperature and the exergy destruction when the line with nitrogen at 500 K and 500 kPa adds 40% more mass to the insulated tank containing nitrogen gas at 300 K and 200 kPa, we need to consider the conservation of mass and energy.

First, let's calculate the initial mass of nitrogen in the tank using the ideal gas law:

PV = nRT

Where:

P = Pressure

V = Volume

n = Number of moles

R = Ideal gas constant

T = Temperature

Initial pressure (P1) = 200 kPa

Initial volume (V1) = 200 L

Initial temperature (T1) = 300 K

Using the ideal gas law, we can find the initial number of moles (n1) of nitrogen:

n1 = (P1 * V1) / (R * T1)

Next, we need to calculate the additional mass of nitrogen that is added to the tank. Since the line adds 40% more mass, the final mass of nitrogen (m2) will be:

m2 = 1.4 * m1

where m1 is the initial mass of nitrogen in the tank

Now, we can calculate the final number of moles (n2) of nitrogen using the final mass:

n2 = m2 / M

where M is the molar mass of nitrogen.

Next, we can calculate the final pressure (P2) using the ideal gas law:

P2 = (n1 * R * T1 + n2 * R * T2) / V1

where T2 is the final temperature.

We can rearrange the equation to solve for the final temperature:

T2 = (P2 * V1 - n1 * R * T1) / (n2 * R)

Finally, we can calculate the exergy destruction using the equation:

Exergy destruction = (m2 * Cp * (T1 - T2)) + (m2 * R * (T1 * ln(P1/P2)))

where Cp is the specific heat capacity at constant pressure and R is the specific gas constant.

By plugging in the known values and evaluating the equations, we can determine the final temperature and the exergy destruction.

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Answer:

Explanation:

Here, we want to calculate the initial volume of the container

Mathematically, we know that volume and pressure are inversely related. What this means is that as volume increases, pressure is expected to decrease and as pressure increases, volume is expected to decrease

A mathematical link between these two is as follows:

The above is according to Boyles' law.

The values with subscript 1 are the initial values, while the values with the subscript 2 are the final values

Thus:

V1 = ?

P1 = 1.25 atm

V2 = 1L

P2 = 3.75 atm

From the relation:

To enhance the concentration of u-235 and u-238, uranium must first be separated.

About 0.72 percent of naturally occurring uranium is the uranium-235 isotope. It is fissile, meaning it can sustain a nuclear chain reaction, unlike the prevalent isotope, uranium-238. It is the sole fissile isotope that was created as a primordial nuclide in nature.

The process of boosting the amount of uranium-235, which makes up only approximately 0.7 percent of natural uranium, to between 3 and 5 percent for use as nuclear reactor fuel. Gaseous diffusion, gas centrifuges, or laser isotope separation can all be used for enrichment.

By using lasers to separate the different isotopes of uranium, uranium can be enriched. Laser light has the ability to excite molecules, a process known as photoexcitation. A particular isotope's characteristics can be altered and it can be separated if the electrons have more energy thanks to the use of lasers.

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Answer:

The answer is a) \(C_{4} H_{16} O_{5}\)

Explanation:

The other chemical formulas' subscripts share a common factor, so they can be simplified to an empirical formula, however, the subscripts in  \(C_{4} H_{16} O_{5}\) cannot be simplified any further, because they do not share any more whole-number factors with each other.

Answer:

The equation is not correct:

[CH4 + O2 → CO2 + 2H2O]

Explanation:

The chemical formulas for methane, oxygen, and carbon dioxide are correct, but the equation is not balanced, so we really don't know idf the overall reaction is written correctly.

Let's balance the reaction:

CH4 + O2 → CO2

We need to have the same numbers of atoms on both sides.  

Count the numbers of each atom:

Element    Reactants    Products    Difference

 C                         1              1                  0                  Balanced

 H                         4              0                -4                  XXX!!!!

 O                         2              2                 0                  Balanced

The hydrogens aren't showing up in the products.  In fact, there is a product missing entirely from the reaction, H2O, water.  The basic reaction is:

CH4 + O2 → CO2 + H2O

Now balance this reaction:

Element    Reactants    Products    Difference

 C                         1              1                  0                  Balanced

 H                         4              2                -2                  Hmmmm . . .

 O                         2              3                 1                  Uh = oh . . .

This reaction is not possible - there are either too many or too few element atoms (the "Difference").

We can adjust the coefficients for each of the molecules to balanced the equation.  This is a bit tricky, but it consists of trying some coefficients that would make things balance.  Only whole number coefficients are allowed in the final answer, although fractions might be used in the process to help find the whole numbers.

We need 2 H2O molecules to account for the 4 hydrogens on a single methane molecule

Step 1:  CH4 + O2 → CO2 + 2H2O

That leads to:

Element    Reactants    Products    Difference

 C                         1               1                 0                  Balanced

 H                         4              4                0                   Balanced

 O                         2              4                 2                  Darn

We need more oxygen atoms, so:

Step 2:  CH4 + 2O2 → CO2 + 2H2O

This leads to:

Element    Reactants    Products    Difference

 C                         1               1                  0                  Balanced

 H                         4              4                 0                   Balanced

 O                         4              4                 0                   Balanced

This is a balanced reaction, and the correct chemical equation.

Answer:

B.

Explanation:

elements

A 1.60 g tablet is found to contain 0.0133 mol of the amino acid glycine (C₂H₅NO₂). (The molar mass of C₂H₅NO₂ is 75.07 g/mol.). So the mass percent of C₂H₅NO₂ in the tablet is 62.4%.

To find the mass percent, one needs to first determine the mass of C₂H₅NO₂ in the tablet. One can do this using the molar mass of C₂H₅NO₂, which is given as 75.07 g/mol in the question.

The molar mass of C₂H₅NO₂ is 75.07 g/mol, so the mass of 0.0133 mol of C₂H₅NO₂ is:

0.0133 mol x 75.07 g/mol = 0.998 g

Therefore, the mass percent of C₂H₅NO₂ in the tablet is:

(0.998 g / 1.60 g) x 100% = 62.4%

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Answer:

5625000gm/cm^3

Explanation:

volume=w*h*l=25*15*5=1875cm^3

density=mass*volume

=1875*3000

=5625000gm/cm^3

The molarity of glucose in blood before eating is  0.00666 M

Molar concentration is the degree of the concentration of a chemical species, especially of a solute in a solution, in phrases of quantity of a substance per unit quantity of answer. In chemistry, the most usually used unit for molarity is the variety of moles in line with liter.

We are given the human blood ranges from about 80 mg/dL before meals to 120 mg/dL after eating.

1 dL = 0.1 L

Mass of glucose before meal = 80 mg = 0.080 g

Mass of glucose after eating = 120 mg = 0.120 g

So, moles of glucose = 0.080 g / 180.16 g/ mol

                                 = 0.000444 moles

Moles of glucose = 0.120 g / 180.16 g/mol

                            = 0.000666 moles

So, molarity of glucose in blood before eating = 0.000444 moles / 0.1 L

                                                                              = 0.00444 M

molarity of glucose in blood after eating = 0.000666 moles / 0.1 L

                                                                  = 0.00666 M

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Tectonic plates are found in the oceanic and continental lithosphere. The splitting of Africa and the plate tectonics movement is similar to Pangaea as the latter was a large continent that also split.

Pangaea was a large continent in the early geological times that covered almost all the landmass of the earth. It was a supercontinent that underwent splitting after the continental plates started drifting apart, resulting in the formation of the now known continents.

The movement of the Nubian and the Somali plates of Africa is similar to that of the Pangaea as the continent is big and intact now but in the future, the plates will drift very apart, creating more smaller continents.

Therefore, the Pangaea event is similar to the plate tectonic movement of Africa.

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The molarity to molality of  NaCl solution that has a concentration of 0.736 M and a density of 1.25 g/ml. is 0.59 m. The correct option is c.

The density of the solution = 1.25 g/mL = 1.25 kg/L

The molarity of the NaCl solution = 0.736 M

The conversion of the molarity to the  molality is as :

The Molality of NaCl = 0.736 / 1.25

The Molality of NaCl = 0.59 mol/kg

The Molality of NaCl = 0.59 m.

Therefore , the molality of the NaCl solution is 0.59 m and the molarity is 0.736 M. The option c is correct.

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