Which image shows the greatest gravitational force?

Answer:

Opinion does not indicate a truthful website. When evaluating a website, you should look for indications of accuracy, such as the publisher or author, the actual information provided, and the recent date of creation or revision. Opinion does not provide any indication of the accuracy of the website.

Explanation:

Answer:

\($ CaCl_2$\), CaS, \($ Cr Cl_4$\), \($ CrS_2$\)

Explanation:

The reaction can be done by adding the cations and the anions.

The binary compounds are always formed by the two different elements.

When one calcium ion, \($ Ca ^{2+} $\) combines with the two calcium ions, \($ Cl^-$\), they formed a binary compound of \($ CaCl_2$\).

When one \($ Ca ^{2+} $\) combines with one \($S^{2-}$\) ion, they formed CaS binary compound.

When one chromium ion \($ Cr^{4+}$\) combines with four ions of chlorine, \($ Cl ^- $\), the compound formed is \($ Cr Cl_4$\).

When 1 ion of \($ Cr^{4+}$\) combines with 2 ions of sulphur, \($S^2$\), the binary compound formed is \($ CrS_2$\).

The pure gas has a pressure of 0.573 atm.

Pressure is the amount of force applied perpendicularly to an object's surface divided by the surface area across which it is applied. In comparison to the surrounding pressure, gauge pressure is the pressure. Pressure is expressed using a variety of units.

The definition of the standard atmosphere, or atm, as a unit of pressure is 101325 Pa. It is occasionally used as a standard pressure or a reference pressure. It roughly corresponds to the average atmospheric pressure at sea level on Earth.

based on the specified value;

we know that,

P(t)=P(water)+P(pure gas)

where,

P(t)=TOTAL PRESSURE OF THE GAS

P(water)= Vapour pressure of water

P(pure gas)=Pressure of pure gas

GIVEN;

P(pure gas)=P(t)-P(water)

                  =(453.0-17.5)

                  =435.5 torr

or P(pure gas)=435.5/760

                       =0.573

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The term that the scientist would use in this case is partial pressure. Option D

The pressure that one particular gas component within a mixture of gases exerts is referred to as partial pressure. It is the pressure that the gas would experience at the same temperature if it were the only thing in the entire volume.

When researching gas mixtures, such as in gas laws, gas phase equilibria, and gas collecting methods, partial pressures are extremely crucial for the gas.

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The calculated formula masses to 133.5 amu, we find that the substance with a formula mass closest to 133.5 amu is (d) AlCl3. Therefore, the answer is option D.

To identify the substance with a formula mass of 133.5 amu, we need to calculate the formula mass of each given substance and compare it to 133.5 amu.

(a) MgCl2:

The formula mass of MgCl2 can be calculated by adding the atomic masses of magnesium (Mg) and chlorine (Cl).

Mg: atomic mass = 24.31 amu

Cl: atomic mass = 35.45 amu

Formula mass of MgCl2 = (24.31 amu) + 2(35.45 amu) = 95.21 amu

(b) SCl:

The formula mass of SCl can be calculated by adding the atomic masses of sulfur (S) and chlorine (Cl).

S: atomic mass = 32.07 amu

Cl: atomic mass = 35.45 amu

Formula mass of SCl = 32.07 amu + 35.45 amu = 67.52 amu

(c) BCl:

The formula mass of BCl can be calculated by adding the atomic mass of boron (B) and chlorine (Cl).

B: atomic mass = 10.81 amu

Cl: atomic mass = 35.45 amu

Formula mass of BCl = 10.81 amu + 35.45 amu = 46.26 amu

(d) AlCl3:

The formula mass of AlCl3 can be calculated by adding the atomic mass of aluminum (Al) and 3 times the atomic mass of chlorine (Cl).

Al: atomic mass = 26.98 amu

Cl: atomic mass = 35.45 amu

Formula mass of AlCl3 = 26.98 amu + 3(35.45 amu) = 133.78 amu. Option D

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The surface area of the rectangular prism is 0.034 square meters.

For a rectangular prism with length l, width w, and height h, the surface area is:

Surface area = 2lw + 2lh + 2wh

Substituting the given values, we get:

Surface area = 2(10 cm x 5 cm) + 2(10 cm x 8 cm) + 2(5 cm x 8 cm)

Surface area = 100 cm² + 160 cm² + 80 cm² = 340 cm²

We can use dimensional analysis. So the conversion factor is:

1 m² / 10,000 cm²

Multiplying the surface area by this conversion factor, we get:

Surface area = 340 cm² x (1 m² / 10,000 cm²)

Surface area = 0.034 m²

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--The complete Question is, What is the surface area of a rectangular prism that has a length of 10 cm, a width of 5 cm, and a height of 8 cm? Use dimensional analysis to convert the answer to square meters--

Hey dear,

Benzene is a 6-C cyclic structure with alternate double bonds.

● Reactions -

1) Benzene to cyclohexane -

Benzene can be reduced to cyclohexane with

the help of Ni/H2. C6H6 + 3H2 --> C6H12

All 3 double bonds in ring are reduced here.

2) Benzene to benzoquinone - Benzene can be oxidized to benzoquinone with

the help of acidic K2Cr207. C6H6 +3[O] --> C6H4O2 + H2O

Only 1 double bond is lost in this reaction.

Hope this helps you.

Answer:

False

Explanation:

Answer

is it FALSE?

I always answer question but people don't ever give me brainiest that why i got 0

The empirical mass of the compound, given that the molecular formula of the compound is N₂O₂, is 60 g/mol

First, we must understand here that empirical mass of a compound is simply the molar mass of the compound.

This means that if we obtain the molar mass of a compound, then we have equally obtain the empirical mass of the compound.

Now, we shall obtain the molar mass of the compound. Details below:

Molar mass of N₂O₂ = (14 × 2) + (16 × 2)

Molar mass of N₂O₂ = 28 + 32

Molar mass of N₂O₂ = 60 g/mol

From the above, the molar mass of the compound is 60 g/mol

Thus, we can conclude that the empirical mass of the compound is 60 g/mol

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It would require approximately 600 kilojoules of energy to vaporize 2 kg of copper.

To calculate the energy required to vaporize a substance, we need to consider the heat of vaporization, which is the amount of energy required to convert a given amount of substance from its liquid state to its gaseous state at a constant temperature.

The heat of vaporization for copper is approximately 300 kJ/kg (kilojoules per kilogram) at its boiling point, which is around 2567 degrees Celsius (4649 degrees Fahrenheit). This means that for every kilogram of copper, 300 kJ of energy is needed to vaporize it.

Given that you have 2 kg of copper, we can calculate the total energy required as follows:

Energy = Heat of Vaporization × Mass

Energy = 300 kJ/kg × 2 kg

Energy = 600 kJ

Therefore, it would require approximately 600 kilojoules of energy to vaporize 2 kg of copper.

It's worth noting that the heat of vaporization can vary slightly depending on the purity of the copper and the specific conditions, such as temperature and pressure. The value provided here is an approximation. Additionally, it's important to handle copper and any high-temperature processes with caution, as they can pose safety hazards.

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The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

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In scientific measurements, errors can be classified into two main types: systematic errors and random errors.  systematic errors can be corrected, random errors can only be reduced by improving the measurement.

In scientific measurements, errors can be classified into two main types: systematic errors and random errors. Systematic errors are those errors that have a consistent pattern and are introduced by flaws in the measurement process or equipment. An example of a systematic error is an incorrectly calibrated instrument, which gives readings that are consistently low for a set of experiments. Another example is a balance that consistently reads 0.050 g higher than a set of calibration standards. On the other hand, random errors are those that are caused by unpredictable fluctuations in the measurement process and have no consistent pattern. An example of a random error is the measurement of the percent transmittance of the same solution, which was measured to be 44.6%, 44.3%, 44.8%, and 44.3%. A student weighing a single sample of salt 5 times on the same balance and recording 5 measurements that are all different, but within 0.006 g of the initial value, also demonstrates a random error.

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Answer:

3.16mL of glacial acetic acid must be added

Explanation:

The mixture of acetic acid with sodium acetate produce a buffer. The buffer follows the H-H equation:

pH = pKa + log [A⁻] / [HA]

Where pH is the pH of the buffer: 5.0

pKa is pKa of the buffer = 4.74

[A⁻] could be taken as moles of acetate ion = 0.500L * (0.20mol/L) = 0.100mol

And [HA] are moles of acetic acid.

Replacing:

5.0 = 4.74 + log [0.100mol] / [HA]

0.26 = log [0.100mol] / [HA]

1.8197 = [0.100mol] / [HA]

[HA] = 0.100mol / 1.8197

[HA] = 0.05495 moles of acetic acid

As the glacial acetic acid is 17.4M, the volume we must add to prepare the buffer is:

0.05495 mol * (1L / 17.4mol) = 3.16x10⁻³L =

Answer:

Astronomers identify numerous types of dwarf galaxies based on their shape and composition.

Explanation:

Answer:

A. prefixed with the letter "d"

Explanation:

Answer:

365 mL

Explanation:

There are 1,000 mL per every 1 L. As such, to convert between the two measurements, you need to multiply the given volume (0.365 L) by the conversion. To allow for the cancellation of units (liters), liters should be in the denominator of the conversion.

1,000 mL = 1 L

 0.365 L            1,000 mL
----------------  x  -----------------  = 365 mL
                               1 L

Answer:

I would answer but not enough information

The experimental setup includes the variables that determine the result. The neighbor with a traditional garage door opener is the control, volunteers are independent, and the number of door openings is the dependent variable.

Dependent variables are said to be the data that are affected and altered by the other variable of the experimental design. In the experiment of the door opener app, the number of times the door opens is the dependent variable as it depends on the distance.

Independent variables are said to be the data that influence the dependent variable and are the cause in an experimental group are the test variables. The volunteers that have access to the door open app are the independent variables.

On the other hand, the control is the group that lacks the independent variable and is deemed to be constant as they must alter the other factor leading to changes in the result. The number of times the garage door opens is constant.

Therefore, the independent and dependent variables are the test variables.

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Answer:

Bone Marrow, or Cartilage

Answer

Explanation

Note that a mole of any substance has 6.02 x 10²³ atoms of that substance.

Let x represent the mole of magnesium present in 5.01 x 10²² atoms of magnesium.

Therefore,

Cross multiply, and divide both sides by 6.02 x 10²³ atoms to get x

By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.

Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.

STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).

First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we have STP conditions, we can substitute the values:

(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).

Simplifying the equation:

2.5 = n × 22.4149.

Solving for n (the number of moles):

n = 2.5 / 22.4149 ≈ 0.1116 moles.

Next, we can calculate the number of molecules using Avogadro's number:

Number of molecules = n × N_A.

Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).

Number of molecules ≈ 6.72 × 10^22 molecules.

Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

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Answer:

Pure gold belongs to ELEMENT because it purely consists of one single element, which is Aurum (Au.)

Explanation:

When pure gold is mixed with other elements to make jewelry, it becomes a mixture.

Explanation:

using Newton second law of motion which states that the rate of change of Momentum is directly proportional to the applied force.

force ∝ change in Momentum/time taken

F∝Mv-Mu/t

F=M(v-u)/t

remember in the law of motion in which acceleration(a)=v-u/t so we will just substitute

F= M×A

f=ma

in ur question

m(mass)= 5.2kg

force(f)=100N

a(acceleration)=??

f=ma

a=f/m

a=100/5.2

a=19.2m/s²

2.) No

3.) Yes look at the explanation

Answer:

(I'm not sure tbh) It's C Polypeptides are formed by 10 or more amino acids

Answer:

Empirical formula = Fe₃O₄

Explanation:

Given data:

Percentage of Fe = 72.36%

Percentage of oxygen = 27.64%

Empirical formula = ?

Solution:

Number of gram atoms of O = 27.64 / 16 = 1.7

Number of gram atoms of Fe = 72.36 / 55.8 = 1.3

Atomic ratio:

                          Fe                    :         O

                           1.3/1.3              :     1.7/1.3

                              1                    :       1.3            

Fe : O = 1 : 1.3

Empirical formula = 3( 1: 1.3)

Empirical formula = Fe₃O₄

A 200 g sample including calcium (Ca), reacts with the excess of hydrochloric acid.  If 4 g of hydrogen gas (H2) is produced, 36.3% is mass percent of calcium of sample.

The term mass percent is sometimes referred to as weight percent or w/w%. The total mass of every one of the atoms in a mole that makes up the compound is the molar mass. The total of all the individual percentages ought to equal 100 percent.

Check the last important number for rounding errors to ensure that the percentage add up. The relative amounts of the components in a compound of chemicals are described by their mass percent composition. Mass composition in percent is also referred to as mass percent. The symbol for it is w/w%.

Ca + HCl → CaCl\(_2\)+ H\(_2\)

moles of calcium = 200/ 40= 5 moles

moles of CaCl\(_2\) = 5moles

mass of CaCl\(_2\) = 5× 110.98= 550g

mass % of Ca = (200/550g )×  100=36.3%

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Answer:c1h3o1

Explanation:

Ahahah I’m getting points nah jp here

C1h3o1

Explanation:

What are the three units of measurement for heat?

The most common units of heat are BTU - British Thermal Unit, Calorie and Joule

What is a wave?

A wave is a physical phenomenon characterized by its frequency, wavelength, and amplitude. In general, waves transfer energy from one location to another, in which case they have a velocity. ... Electromagnetic waves, such as light, do not require a medium and can travel through a vacuum.

What are the two types of waves?

There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves