1.________data are descriptions and involve characteristics that cannot be counted.

Answer:

displacement is 0m distance is 40m

Explanation:

20-20 vs. 20+20

If you walked 20 m, took a book from a table, and walked back to your seat, The distance you traveled is 40 meters, and your displacement is 0 meters.

You walked 20 meters. This means you physically moved a distance of 20 meters away from your seat. You took a book from a table. This action does not affect your distance or displacement. It is simply a task you performed during your journey.

You walked back to your seat. By returning to your seat, you negated the initial displacement and arrived back at your starting point. As a result, your displacement is 0 meters because there is no overall change in your position.

Distance is a scalar quantity that represents the total length of the path traveled, regardless of the direction. In this case, since you traveled 20 meters away from your seat and then returned, the total distance traveled is 40 meters (20 meters + 20 meters).

Displacement, on the other hand, is a vector quantity that represents the change in position from the starting point to the ending point. Since your starting point and ending point are the same (your seat), the displacement is 0 meters. Therefore, the distance you traveled is 40 meters, and your displacement is 0 meters.

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Answer:

51.842/2.1 g/mL

Explanation:

the volume of the irregular object= 19.8 - 17.1 =2.7 mL

the density if the irregular object= mass ÷ volume = 51.842 ÷ 2.1 = 51.842/2.1 g/mL

Answer: the answer is molecules

A molecule is the smallest particle of a covalent compound that still has the properties of the compound.

The uncertainty of the triple beam balance is determined by its least count, which is the smallest mass that can be measured on the balance. Its least count is 0.1 grams, which means that the uncertainty of the triple beam balance is +/- 0.05 grams. It is important to calibrate the balance regularly to ensure that it is measuring accurately.

The uncertainty of the triple beam balance is determined by its least count, which is the smallest mass that can be measured on the balance. The triple beam balance is an analytical tool that is used in physics, chemistry, and biology laboratories to measure the mass of a substance with high precision. It has a capacity of up to 261 grams with a least count of 0.1 grams, which means that the uncertainty of the triple beam balance is +/- 0.05 grams.The uncertainty of the triple beam balance is important to consider because it affects the accuracy of the measurement. If the uncertainty is high, then the measurement is less accurate and vice versa. Therefore, it is important to calibrate the triple beam balance regularly to ensure that it is measuring accurately.The triple beam balance is a reliable analytical tool that has been used for decades in laboratories worldwide. It is simple to use and requires minimal maintenance. The balance's accuracy is affected by factors such as temperature, humidity, and vibration. As such, it should be kept in a stable environment and checked regularly to ensure it is measuring accurately.In conclusion, the uncertainty of the triple beam balance is determined by its least count, which is the smallest mass that can be measured on the balance. Its least count is 0.1 grams, which means that the uncertainty of the triple beam balance is +/- 0.05 grams. It is important to calibrate the balance regularly to ensure that it is measuring accurately.

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Answer:

Where is the data table?

Answer:

Nucleus and atoms have no overall charge because each element has the same number of protons and electrons which cancel out each other.

Yes. Stars use fusion to create nuclear energy, which is what makes them "alive". The older they are, the "bigger" the element in them is. Hydrogen turns into Helium, and when hydrogen is used up, the helium starts fusing into bigger elements. it stops at iron however. Once stars start fusing silicon to iron, it is doomed because it takes more energy than it gives off.

Answer:

Orange

Explanation:

I used google my b

Answer:

ORANGE

explanation:

Small pieces of sodium burn in air with often little more than an orange glow. Using larger amounts of sodium or burning it in oxygen gives a strong orange flame.

Answer:

4

Explanation:

Speed=Distance/time, so 20/5 divide time divided by distance. so the answer is 4.

The speed of Haley the hummingbird is 4 m/s.

From the question,

We are to calculate the speed of Haley the hummingbird

Speed is given by the formula

\(Speed =\frac{Distance\ traveled}{Time\ taken}\)

From the given information,

The hummingbird can fly from a pansy flower to a hibiscus flower 20 meters away in 5 seconds.

That is,

The bird can cover a distance of 20 meters in 5 seconds.

Therefore,

Speed of the hummingbird = \(\frac{20}{5}\)

Speed of the hummingbird = 4 m/s

Hence, the speed of Haley the hummingbird is 4 m/s.

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The total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

To calculate the total charge that flows while the battery is being charged, we can use the relationship between electrical energy, potential difference, and charge.

The electrical energy (E) stored in the battery is given as 64 mega Jules (64 MJ). The potential difference (V) provided by the battery is 330 volts. We know that the energy (E) is equal to the product of the potential difference (V) and the charge (Q):

E = V * Q

Since the charging process is 100% efficient, all the electrical energy supplied is stored in the battery. Therefore, we can rearrange the equation to solve for the charge (Q):

Q = E / V

Substituting the given values, we have:

Q = 64 MJ / 330 V

To perform the calculation, we need to convert mega Jules (MJ) to joules (J) since the SI unit of energy is joules. One mega Joule is equal to 1 million joules:

Q = (64 * 10^6 J) / 330 V

Calculating the division:

Q ≈ 193,939.39 Coulombs

Therefore, the total charge that flows while the battery is being charged is approximately 193,939.39 Coulombs.

This value represents the quantity of electric charge transferred during the charging process, and it indicates the amount of electricity that enters the battery.

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There are 0.96 moles of toluene are in the solution of toluene (C₇H₈) in 301 g of cyclohexane (C₆H₁₂) having a boiling point of 90.30°C.

Given data -

Boiling point of cyclohexane = 90.30°C

Mass of cyclohexane = 301 g

Kb of cyclohexane = 2.92°C/m

Tb of cyclohexane = 80.90°C

Using the equation,

           m = ∆Tb

                   Kb

where,

m is molality of the solution,

∆Tb is the change in boiling point of cyclohexane -

          90.30 ° C - 80.90 °C = 9.40 °C

Kb is the boiling point elevation constant of cyclohexane, 2.92 °C/m

          Molality (m) =  9.40 = 3.22 mol/kg

                                   2.92

Number of moles of toluene = molality x mass of cyclohexane (in kg)

                                                = 3.22 x 301  

                                                               1000

Number of moles of toluene = 0.96 mol

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An amino acid's four primary components are: The amino group (-NH2) is a fundamental functional group composed of a nitrogen atom linked to two hydrogen atoms. It is found on the amino acid's alpha carbon atom.

The carboxyl group (-COOH) is an acidic functional group made composed of a carbon atom coupled to two oxygen atoms (one of which is double-bonded) and a hydroxyl group (-OH). It's at the other end of the alpha carbon from the amino group. The R group (side chain) is a changeable functional group that distinguishes one amino acid from another. It is found on alpha carbon and can be as simple as a single hydrogen atom or as complicated as a big, organic compound.  molecule. Hydrogen atom (-H): This is the fourth component of an amino acid and is located on the alpha carbon along with the amino group, carboxyl group, and side chain. These four components are joined together by covalent bonds to form an amino acid. There are 20 different amino acids that are commonly found in proteins, each with a unique side chain that gives it specific chemical properties.

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483.07 grams

The reaction between Iron (III) oxide and carbon to produce solid iron and carbon monoxide is given as

Determine the moles of Iron(III) oxide

According to stoichiometry, 1 mole of Iron(III)oxide produced 2 moles of Iron. The moles of Iron required is expressed as:

Determine the mass of Iron produced

Hence the mass of iron that can be produced is 483.07 grams

Approximately 3.04 grams of magnesium would be required to react with 0.25 moles of hydrochloric acid.

To determine the mass of Mg required, we need to use the balanced chemical equation for the reaction between hydrochloric acid (HCl) and magnesium (Mg):

2HCl + Mg → MgCl2 + H2

From the balanced equation, we can see that 2 moles of HCl react with 1 mole of Mg. Therefore, if 0.25 mol of HCl reacts, we would need half of that amount, which is 0.125 mol of Mg.

To calculate the mass of Mg required, we need to multiply the number of moles of Mg by its molar mass. The molar mass of Mg is given as 24.31 g/mol. Therefore, the mass of Mg required can be calculated as follows:

Mass of Mg = Number of moles of Mg × Molar mass of Mg

Mass of Mg = 0.125 mol × 24.31 g/mol

Mass of Mg = 3.04 g

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40.0 grams of oxygen are required to burn 3.01 x 10^23 propane molecules.

To answer this question, we need to use stoichiometry. The balanced chemical equation tells us that 1 mole of propane reacts with 5 moles of oxygen. So, first we need to convert the given number of propane molecules to moles:

3.01 x 10^23 propane molecules x (1 mole / 6.022 x 10^23 molecules) = 0.5 moles of propane

Now we can use the mole ratio from the balanced equation to find the moles of oxygen needed:

0.5 moles of propane x (5 moles of oxygen / 1 mole of propane) = 2.5 moles of oxygen

Finally, we can convert moles of oxygen to grams using the molar mass of oxygen:

2.5 moles of oxygen x (16.00 g / 1 mole) = 40.0 g of oxygen

Therefore, 40.0 grams of oxygen are required to burn 3.01 x 10^23 propane molecules..

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Answer: because they take a lot of tie to form  

The reactions that are catalyzed by precipitation reaction, the end product of this is always the formation of precipitate.

In a chemical reaction there are basically two components the reactant which undergoes to react and the product which is produced by the reaction that the reactant molecule undergoes. There are specified conditions given to a particular reaction so that the process to catalyze the reaction will proceed efficiently.

The precipitation reaction is considered to come under the category of chemical reaction. There are four general types of chemical reaction. The other name given to this reaction is double-displacement.

In this type of reaction whenever the substrate undergoes a reaction under the specified condition suitable for the reaction the precipitate is always produced as the product. The precipitate formed as the end-product could be of any color.

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The complete question is-

What are the molecular views regarding  the solution that occur via precipitation reaction?

The balanced chemical equation between pottasium and chlorine is as follows: 2K + Cl₂ → 2KCl. It is a combination reaction.

A chemical reaction is a process, typically involving the breaking or making of interatomic bonds, in which one or more substances are changed into others.

According to this question, a chemical reaction occurs between potassium metal and chlorine gas to form pottasium chloride as follows:

2K + Cl₂ → 2KCl

The chemical reaction is a combination reaction because it involves the combination of two elements to form a compound.

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Answer:

Explanation:

A machine's efficiency is a measure of how much of its input energy is turned into usable output. The following formula is used to calculate a machine's efficiency:

(Output Work / Input Work) x 100% = Efficiency

The output work in this situation is the work done by the machine to draw the bucket of water, and the input work is the effort exerted by the person running the machine.

Work produced = Force x Distance

Distance = the distance traveled by the bucket = 50 liters

As a result, the output work = 250 N x 50 L = 12500 J. (Joules)

Work input = effort x distance

Distance = the distance over which effort is exerted = 5 pulleys

So the input work is 250 N multiplied by 5 pulleys is 1250 N.

(Output Work / Input Work) x 100% = Efficiency

(12500 J / 1250 J) x 100% = Efficiency

10 × 100% Equals 1000% efficiency

It should be noted that the efficiency is expressed as a percentage and should be less than 100%. However, in this example, the answer is 1000%, which is implausible.

This might be because of an error in the input data or a misunderstanding of the situation.

The standard free energy of the above reaction is calculated to be 2247kJ

The standard reaction free energy can be calculated using the formula:

ΔG° = -nF E°

where:

ΔG° is the standard reaction free energy

n is the number of electrons transferred in the balanced redox reaction

F is the Faraday constant (96,485 C/mol)

E° is the standard reduction potential of the half-reactions involved in the redox reaction

First, let's write the two half-reactions for the redox reaction:

Br2 + 2 e- → 2 Br- E° = +1.087 V

12 H2O + 12 e- → 6 H2 + 12 OH- E° = -0.828 V

Since 6 electrons are transferred in the reaction, we need to multiply the second half-reaction by 6 so that the electrons cancel out:

6 (12 H2O + 12 e- → 6 H2 + 12 OH-) E° = -4.968 V

Now we can add the two half-reactions to get the overall balanced reaction:

12 (s) + 6 H2O (l) + 5 Br2 (l) → 2103 (aq) + 12 H+ (aq) + 10 Br- (aq)

The standard reaction free energy can now be calculated:

ΔG° = -nF E°

ΔG° = -(6 mol e-)(96,485 C/mol)(-4.968 V + 1.087 V)

ΔG° = +2,246,749.71 J = +2246.749 kJ

Rounding to 3 significant digits, the standard reaction free energy is:

ΔG° = +2247kJ

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Levi's is taking precautions to prevent potentially hazardous chemicals from its supply chain.

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Gravity, as a fundamental force of nature, is influenced by several factors. The following are some of the key factors affecting gravity:

Answer:

9.55 mol of Al

Explanation:

To obtain the number of moles of a certain element given the number of atoms only, you have to divide it with Avogadro's number,

6.02 x 10^23 mol−1.

mol Al = (( 5.75 x 10^24 Al) atoms) ⋅ ((1 mol / 6.02 x 10^23 Al ) atoms)  

mol Al= 9.55 mol

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Since water does not have charged particles, water is a non-conductor. When some solutes dissolve in water they allow an electric current to flow through the water and the solution conducts electricity. These solutes are called electrolytes. ... Non-electrolytes like sugar dissolve to form molecules in solution.

The peak wavelength of the blackbody spectrum for a star with a surface temperature of 10000 K is approximately 2.898 × 10⁻⁷ meters.

To determine the peak wavelength of the blackbody spectrum of a star with a surface temperature of 10000 K, we can use Wien's displacement law. According to the law, the peak wavelength (λmax) is inversely proportional to the temperature (T) of the object.

The formula for Wien's displacement law is;

λmax = (b / T)

where λmax is the peak wavelength, b is Wien's constant (approximately equal to 2.898 × 10⁻³ meters per Kelvin), and T is the temperature in Kelvin.

Let's substitute given values into formula;

λmax = (2.898 × 10⁻³ meters per Kelvin) / 10000 Kelvin

Calculating this expression;

λmax = 2.898 × 10⁻³ meters per Kelvin / 10000 Kelvin

= 2.898 × 10⁻⁷ meters

Therefore, the peak wavelength of the blackbody spectrum for a star with a surface temperature of 10000 K is approximately 2.898 × 10⁻⁷ meters.

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If a building has become accidentally contaminated with radioactivity and initially contained 4.7 kg of strontium-90 and the safe level is less than 10.2 counts/min, then the building will be unsafe for 7.2 x 10^12 seconds.

Radioactivity is the spontaneous emission of radiation from the nucleus of an unstable atom that is accompanied by a decrease in mass and a decrease in charge. There are three types of radioactive emissions : alpha particles, beta particles, and gamma rays.

Steps to solve the given problem :

We can use the following formula to calculate the radioactivity of an element :

Radioactivity = λN

where, λ = decay constant ; N = the number of atoms in the sample

Now we can use the following formula to find the decay constant :

λ = ln2 / t1/2 where, t1/2 = half-life of the substance

To calculate the half-life of strontium-90, we can use the following formula : t1/2 = 0.693 / λ

We know that the atomic mass of strontium is 89.9077 u. Thus, the number of moles of strontium-90 in 4.7 kg of the sample is :

Number of moles = Mass / Molar mass= 4.7 / 89.9077= 0.052252 mol

Now, we can use Avogadro's number to find the number of atoms in the sample :

Number of atoms = Number of moles x Avogadro's number = 0.052252 x 6.022 x 10^23 = 3.1458 x 10^22 atoms

We can use the following formula to find the radioactivity :

Radioactivity = λN= λ (3.1458 x 10^22)

We know that the safe level of radioactivity is less than 10.2 counts/min. Thus, we can set up the following equation and solve for the decay constant :

10.2 = λ (3.1458 x 10^22)λ = 3.24 x 10^-23

We can use this decay constant to find the half-life : t1/2 = 0.693 / λ = 2.14 x 10^13 s

Now we can use the half-life to find the time it takes for the sample to decay to the safe level :

ln (N0 / N) = λtN / N0 = e^(-λt)t = [ln (N0 / N)] / λ

where, N0 = initial number of atoms ; N = final number of atoms

N0 / N = 10.2 / 3.1458 x 10^22= 3.235 x 10^-21

t = [ln (1 / 3.235 x 10^-21)] / (3.24 x 10^-23) = 7.2 x 10^12 s

Therefore, the building will be unsafe for 7.2 x 10^12 seconds.

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An insulated cup contains 75 g of water at 24 °C. A 26 g sample of metal at 82.25°C is added. The final temperature of the water and metal is 28.34°C. The specific heat of the metal is 0.972 J/ g°C.

Given that :

Mass of the metal = 26 g

The specific heat of the metal = ?

Initial temperature of the metal = 82.25°C

Equilibrium temperature = 28.34°C

Mass of the water = 75 g

Specific heat of water = 4.18 J/ g°C

Initial temperature of the water = 24 °C

The specific heat capacity is given as :

26 × c × ( 82.25 - 28.34) = 75 × 4.18 ( 28.34 - 24)

26 × c × 53.91 = 313.5  × 4.34

c = 0.972 J/ g°C

Thus, the specific heat capacity of metal is 0.972 J/ g°C.

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Answer:

D

Explanation:

ahh i think,

AHH JUST LET ME SEND ITTT

Answer:

its one type of matter becomes another type of matter

Explanation:

it was that for a p e x