please help me solve step by step!!
A motorcycle and its rider have a combined mass of 1250 kg. They travel inside
a vertical loop with a radius of 7.13 m. At the lowest point, the speed is 22.7 m/s. How much force does the track exert on the motorcycle, at this lowest
point, to keep the rider in the loop?

The formula for diamminedichloroethylenediaminecobalt(III) bromide is\([Co(NH3)_{2}(en)(Cl)_{2}]Br_{2}\)

Diamminedichloroethylenediaminecobalt(III) bromide is a coordination complex with the formula\([Co(NH3)_{2}(en)(Cl)_{2}]Br_{2}\). In this complex, the central cobalt atom is coordinated by two ammonia molecules, one ethylenediamine ligand, and two chloride ions.The formula for the ethylenediamine ligand is\(H_{2}NCH_{2}CH_{2}NH_{2}\). It has two amino groups that can act as electron donors to the metal center. This makes ethylenediamine a bidentate ligand that can coordinate to metal ions in a chelating fashion.In diamminedichloroethylenediaminecobalt(III) bromide, the ethylenediamine ligand is coordinated to the cobalt atom via its two nitrogen atoms. The two chloride ions are also coordinated to the cobalt atom. The two ammonia molecules are coordinated to the cobalt atom via their nitrogen atoms and are oriented in a cis configuration with respect to the ethylenediamine ligand. The bromide ion is not coordinated to the cobalt atom, but it is associated with the complex through ionic interactions with the positive cobalt center.

The formula for diamminedichloroethylenediaminecobalt(III) bromide is\([Co(NH3)_{2}(en)(Cl)_{2}]Br_{2}\). This complex contains a cobalt atom coordinated by two ammonia molecules, one ethylenediamine ligand, and two chloride ions. The bromide ion is not coordinated to the cobalt atom, but it is associated with the complex through ionic interactions with the positive cobalt center.

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Answer:

Temperature is not a chemical change because when a substance changes in temperature, its chemical makeup is not changing.

Answer:

i belive its trrue

Explanation:

Answer:

i think its false i hope this helps

Explanation:

Answer: Yes, because it’s between 8 and 10.

Explanation:

it might be porous materials

Answer:

Air had the highest rate of absorption.  Air absorbs most of the suns heat and sun rays and air can move to different areas which are warm and colder.

Explanation:

1. LDFs

2. Intermolecular Forces

3. Intramolecular Forces

4. Linear

5. Tetrahedral

Edit: I'm new to this site and idk how to use it properly. I'm not sure about 2 and 3 currently because these forces are between molecules as well so INTERmolecular would be used twice (?)

The ionic bond between Na and P has formula unit Na3P.

What is the formula unit?

Formula units is the chemical formula which gives all the ions present in the lowest ratio possible to make it neutral charge of an ionic compound. For example, the formula unit for sodium chloride can be written as NaCl where charge on Na is +1 and charge on Cl is -1. So to make it neutral they can be cancelled and written as NaCl.

In sodium phosphide, the charge on Na (sodium) ion is +1 and the charge on the P (phosphorous) ion is -3. Therefore, make the charges neutral, 3 Na ions need to be added to 1 P ion. Formula units can be used to describe or represent the molecules or the elements which make up a substance.

Hence, Na3P is the formula unit of Na and P in sodium phosphide.

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Answer:

D. Thermal

Thermal is another energy the match gives off

decay rate of approximately 1.69x10^17 Bq (becquerels),

The decay rate of a radioactive sample is determined by the number  of radioactive atoms present and the decay constant, which represents the probability of decay per unit of time.

To calculate the decay rate, we multiply the number of atoms in the sample by the decay constant. In this case, the sample has 8.31x10^17 atoms and a decay constant of 0.203/s. Multiplying these values gives a decay rate of approximately 1.69x10^17 Bq (becquerels), which represents the number of decays per second in the sample.

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The daily mean, given the data from the question is 15 °C

Mean = Sumation of data / Number of data

Mean = (20 + 10) / 2

Mean = 30 / 2

Mean = 15 °C

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Answer: XCl2(aq) + 2 AgNO3(aq) ---> X(NO3)2(aq) + 2 AgCl(s)

Explanation:

Hehe I remembered how...

Answer:

1.5 L

Explanation:

Step 1:

The balanced equation for the reaction. This is given below:

HCl + NaOH —> NaCl + H2O

From the balanced equation above, The mole ratio of the acid (nA) = 1

The mole ratio of the base (nB) = 1

Step 2:

Data obtained from the question. This includes the following:

Molarity of acid (Ma) = 0.5M

Volume of acid (Va) =..?

Volume of base (Vb) = 1L

Molarity of base (Mb) = 0.75M

Step 3:

Determination of the volume of the acid needed for the reaction.

Using the formula:

MaVa/MbVb = nA/nB

The volume of the acid needed for the reaction can be obtained as follow:

0.5 x Va / 0.75 x 1 = 1

Cross multiply

0.5 x Va = 0.75 x 1

Divide both side by 0.5

Va = 0.75 /0.5

Va = 1.5 L

Therefore, the volume of the acid, HCl needed for the reaction is 1.5L

Answer:

No

Explanation:

It is 'duplet' so it is related to “doublet” and refers to a pair or to the number two.

Answer:

The octet rule says that atoms need to have eight electrons to be stable, except for hydrogen and helium, which need only two electrons. This atom has only one electron, so it does not satisfy the octet rule.

Answer:

thermal shock

Explanation:

the temperatures inside the glass jar should have continued to increase over time. Internal stresses due to uneven heating. This is also known as “thermal shock”.

In general, the thicker the glass, the more prone it will be to breaking due to the immediate differences in temperature across the thickness of glass.

Borosilicate glass is more tolerant of this, as it has a higher elasticity than standard silicon glass.

You may also note that laboratory test tubes and flasks are made with thinner walls, and of borosilicate glass, when designated for heating.

Answer:Endothermic, because heat is absorbed.

Explanation:

The given reaction, hydrogen gas + iodine gas → hydrogen iodide gas, is classified as exothermic because it releases heat energy during the formation of the product. Option 4.

The given reaction, hydrogen gas (H2) + iodine gas (I2) → hydrogen iodide gas (HI), is an exothermic reaction because it releases heat. Exothermic reactions are characterized by the release of energy in the form of heat, which means that the products of the reaction have lower energy compared to the reactants.

In this particular reaction, hydrogen gas and iodine gas combine to form hydrogen iodide gas. This process involves the breaking of covalent bonds in the reactants and the formation of new covalent bonds in the product.

The energy released during bond formation is greater than the energy required to break the existing bonds, resulting in a net release of energy in the form of heat.

To determine the classification of the reaction, it is necessary to consider the change in enthalpy (∆H). If ∆H is negative, it indicates an exothermic reaction, while a positive ∆H value would indicate an endothermic reaction.

Given that the reaction is exothermic, it means that the formation of hydrogen iodide gas is accompanied by the release of heat energy. This can be observed experimentally as a temperature increase in the surroundings.

The reaction releases energy in the form of heat due to the stabilization of the product, hydrogen iodide, which is more stable than the reactants, hydrogen gas and iodine gas. Option 4 is correct.

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Answer:

Liquid to solid liquid to gas

Explanation:

Boiling a liquid result in a gas

The CuO is reduced and acts as the oxidizing agent, while H2 is oxidized and serves as the reducing agent in this chemical reaction.

n the given chemical reaction, CuO + H2 -> Cu + H2O, copper(II) oxide (CuO) is reduced to copper (Cu), while hydrogen gas (H2) is oxidized to water (H2O).

The substance oxidized: H2 (hydrogen gas) is oxidized. It loses electrons and undergoes an increase in oxidation state from 0 to +1 in water.

The substance reduced: CuO (copper(II) oxide) is reduced. It gains electrons and undergoes a decrease in oxidation state from +2 to 0 in copper metal.

The oxidizing agent: CuO acts as the oxidizing agent since it accepts electrons from hydrogen gas during the reaction, causing the hydrogen to be oxidized.

The reducing agent: H2 acts as the reducing agent since it donates electrons to copper(II) oxide, causing the reduction of copper(II) oxide to copper metal.

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The resistance of carbon, silicon, germanium and tin  are different at room temperature.

The obstruction to current flow in an electrical circuit is measured by resistance. The Greek letter omega (Ω) represents the unit of measurement for resistance, known as ohms. Georg Simon Ohm, a German physicist who investigated the connection between voltage, current, and resistance, is the name given to the unit of resistance.  

V= I x R

The current flow decreases as resistance increases. If abnormally high, damaged conductors from corrosion or burning could be one of several potential causes. The current flow increases as the resistance decreases.

The increasing order of resistance is  tin < carbon < germanium < silicon

Hence, different elements have different resistance at room temperature

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The standard free energy change for the cell reaction of this galvanic cell is +23 kJ/mol. So, the correct answer is E. +23 kJ.

The standard free energy change for the cell reaction of this galvanic cell can be determined by subtracting the standard reduction potential of the anode from the standard reduction potential of the cathode.

The standard reduction potential for the cathode half-reaction (Cd2+(aq) + 2e- -> Cd(s)) is -0.40 V, while the standard reduction potential for the anode half-reaction (Co2+(aq) + 2e- -> Co(s)) is -0.28 V.

To calculate the standard free energy change, we use the equation:

ΔG = -nFΔE

where ΔG is the standard free energy change, n is the number of electrons transferred in the balanced equation, F is the Faraday constant (96,485 C/mol), and ΔE is the difference in standard reduction potentials.

In this case, n = 2 (since 2 electrons are transferred in both half-reactions), and ΔE = (-0.40 V) - (-0.28 V) = -0.12 V.

Plugging in the values, we get:

ΔG = -(2)(96,485 C/mol)(-0.12 V) = 23,276 J/mol = 23.28 kJ/mol

Therefore, the standard free energy change for the cell reaction of this galvanic cell is +23 kJ/mol. So, the correct answer is E. +23 kJ.

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Answer: CaCO3 + 2HNO3 -> Ca(NO3)2 + H2O + CO2

Explanation:

Answer: 43.8 Volts

Explanation:

Ohms law states that current is directly proportional to voltage applied.

\(V=I\times R\)

where V = voltage = ?

I = current = 0.73 A

R = resistance = 60 ohm

Putting in the values we get:

\(V=0.73A\times 60ohm=43.8V\)

Thus the voltage of the battery is 43.8 Volts

The following describes a panel of tests for carbon dioxide, potassium, chloride, and sodium is an electrolyte panel.

The description that best fits a panel of tests for carbon dioxide, potassium, chloride, and sodium is an electrolyte panel or an electrolyte blood test.

An electrolyte panel is a group of blood tests that measure the levels of various electrolytes in the body, including carbon dioxide (CO₂), potassium (K⁺), chloride (Cl⁻), and sodium (Na⁺). These electrolytes play crucial roles in maintaining the body's fluid balance, acid-base balance, and nerve and muscle function.

During an electrolyte panel, a blood sample is collected, and the levels of these electrolytes are measured. The results provide valuable information about the body's electrolyte balance and can help diagnose and monitor conditions such as dehydration, kidney disorders, electrolyte imbalances, and certain metabolic disorders.

In addition to carbon dioxide, potassium, chloride, and sodium, an electrolyte panel may also include tests for other electrolytes such as calcium, magnesium, and phosphate, depending on the specific needs of the patient and the healthcare provider's assessment.

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Answer:

Covalent bonds are the strongest bonds in nature and under normal biological conditions have to be broken with the help of enzymes. This is due to the even sharing of electrons between the bonded atoms and as with anything equally shared there is no conflict to weaken the arrangement.

Explanation:

Bonding electrons are described as electrons that participate in chemical bonds. Chemical bond, a strong attraction between atoms, ions, or molecules, might be the subject here. Atoms sharing electron pairs form a covalent or molecular connection. An attraction between the atomic orbitals of atoms in a molecule is called a bonding molecular orbital.

Which bonding type results in stronger bonds? What is your evidence?

A covalent bond is created when the difference between two atoms' electronegativities is too small for an electron transfer to occur and produce ions. Bonding electrons are collectively referred to as the electrons that are present between the two nuclei. The "glue" that binds the atoms into molecular structures is the bound pair.

It is the most powerful link. By sharing an electron, the two atoms in such a bond are joined together.

One Hydrogen atom with one valence electron and one Chlorine atom with seven valence electrons, for instance, make up the HCL molecule. In this instance, hydrogen and chlorine share an electron to create a single bond.

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Answer:

-2820 kJ

Explanation:

Just got it right on Ap3x :)

Check your question and verify that it says "multiply" and not "reverse", this is the only page that has the answer for that one.

If you have "reverse" there is another guy who asked the question, is easy to find.

Considering the definition of extensive properties and heat of reaction, the enthalpy of reaction for the intermediate reaction is -2820 kJ (option C.).

Extensive properties of matter are defined as those that depend on the amount of material in a body.

The greater the mass or the larger the body or system, the greater the proportion of that property. This means that extensive properties are not fixed, they vary according to the amount of matter.

Also, extensive properties are additive, meaning they can be added together.

The heat of reaction is the energy that is released or absorbed when chemicals are changed in a chemical reaction.

Enthalpy is an extensive property: its magnitude depends on the amount of matter present.

Since enthalpy is an extensive property, if you need to multiply the following reaction by 2 to be an intermediate reaction in a Hess's law problem, the variation of enthalpy also is pultiplied by 2.

Then, ΔH= 2×( -1410 kJ)

ΔH= -2820 kJ

Finally, the enthalpy of reaction for the intermediate reaction is -2820 kJ (option C.).

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Answer:

Deciduous forests

Explanation:

The average atomic mass of uranium is 237.97 amu based on its three common isotopes.

Isotopes are the different forms of the same element. In considering the abundance of different isotopes of uranium for the calculation of its average atomic mass, the formula below is used.

Average atomic mass = summation of [(percent abundance /100)*atomic mass]

With the given three common isotopes of uranium, the calculated value of average atomic mass is shown below.

Average atomic mass= (0.01/100)(234 amu) + (0.71/100)(235 amu) + (99.28/100)(238 amu)

Average atomic mass=237.97 amu

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Answer:

NO2

Explanation:

N = Nitrogen

O = Oxygen

Answer:

NO. 2.

is the answer

hopes this helps

The density = 1.77 x \(10^{-2}\) where Mass =4.7033 x \(10^4\) g and Volume=2.6540 x \(10^6\)mL.

What is density?

Density is the measurement of how tightly a material is packed together. It is defined as the mass per unit volume. Density Symbol: D or ρ Density Formula: ρ = m/V, where ρ is the density, m is the mass of the object and V is the volume of the object.

Given:

Density = (4.7033 x \(10^4\) g/ 2.6540 x \(10^6\) mL)

Mass =4.7033 x \(10^4\) g

Volume=2.6540 x\(10^6\) mL

Density = (4.7033 x \(10^4\) g/ 2.6540 x \(10^6\) mL)

Density = 1.772155237 x \(10^{-2}\) = 1.77 x \(10^{-2}\)

Hence, the density = 1.77 x \(10^{-2}\).

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Given :

An ideal gas contained in a cylinder with the volume 34.4L, temperature 667K and pressure 2 atm.

To Find :

What will be pressure of the gas if it is heated at 1000k and the volume becomes 50L.

Solution :

We know, by ideal gas equation :

\(Pv = nRT\)

Now, in the given question only their are two state and also their is no leakage so amount of gas is also constant.

So,

\(\dfrac{P_1V_1}{T_1} = \dfrac{P_2V_2}{T_2}\\\\\dfrac{2\times 34.4}{667} = \dfrac{P_2 \times 50}{1000}\\\\P_2 = \dfrac{2\times 34.4 \times 1000}{667 \times 50}\ atm\\\\P_2 = 2.06 \ atm\)

Therefore, the pressure of gas is 2.06 atm.