Which would have the LEAST gravitational potential energy (GPE)? A ball sitting on the ground An airplane flying 30,000 feet above the ground A rock sitting on top of Mt. Everest​

When Salt is dissolved into a water solvent; Yes, it can be extracted through evaporation. It retains its original properties: Choice C.

The salt when dissolved in water solvent forms a solution.

They can be separated by boiling the mixture.

The solution formed is a mixture which can be separated by evaporation of water molecules do that the salt is left in the heating chamber.

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Answer:

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Explanation:

List of answers here

The mass of 3.2 mL of a liquid with specific gravity of 0.986 is 3.155 g

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

With the above formula, we can determine the mass of the liquid. Details below

The following data were obtained from the question:

Density = mass / volume

Cross multiply

Mass = Density × Volume

Mass of liquid = 0.986 × 3.2

Mass of liquid = 3.155 g

Thus, the mass of the liquid is 3.155 g

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Answer:

The ONLY compound that has polar bonds is CF4

Explanation:

Any elements or free atoms DO NOT have any polar bonds, they only have London Dispersion Forces, which is not considered a polar force.

Only Dipole-Dipole and Hydrogen Bonds are considered to make a molecule polar. CF4 has dipole-dipole bonds (In addition to London Dispersion Forces) Making it Polar.

Cl2, F2, H2 ONLY have London dispersion which means it is not polar

Hope this helps,

Answer:

According to the b word, this is the answer

Explanation:

Learning a periodic table is more important as it is systematically arranged to give a lot of information about the elements and the way they relate to each other in various ways. Moreover, chemistry is all more about chemical elements. Hence a good understanding of the chemical elements will discover more about chemistry.

Answer: 177.23 g.

Explanation:

the volume of the aluminum bar is

1.7 cm x 3.0 cm x 12.9 cm

= 65.61 cm^3

2.7 g/cm^3 x 65.61 cm^3

177.23g

Answer:

78.4

Explanation:

Answer:

32 mL

Explanation:

A chemist must prepare 500.0mL of hydrobromic acid solution with a pH of 0.50 at 25°C. He will do this in three steps: Fill a 500.0mL volumetric flask about halfway with distilled water. Measure out a small volume of concentrated (5.0M) stock hydrobromic acid solution and add it to the flask. Fill the flask to the mark with distilled water. Calculate the volume of concentrated hydrobromic acid that the chemist must measure out in the second step. Round your answer to 2 significant digits.

Step 1: Calculate [H⁺] of the dilute solution

pH = -log [H⁺]

[H⁺] = antilog -pH = antilog -0.50 = 0.32 M

Step 2: Calculate [HBr] of the dilute solution

HBr is a strong acid that dissociates according to the following equation.

HBr ⇒ H⁺ + Br⁻

The molar ratio of HBr to H⁺ is 1:1. The concentration of HBr is 1/1 × 0.32 M  = 0.32 M.

Step 3: Calculate the volume of the concentrated HBr solution

We will use the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂ / C₁

V₁ = 0.32 M × 500.0 mL / 5.0 M

V₁ = 32 mL

Answer:

none of the above

Explanation:

The reaction is spontaneous under conditions of low pressure and high temperature

We can say that a reaction is spontaneous when we know that the reaction is able to go on on its own. This implies that there is a mnimum energy that is required for the reaction to proceed.

The reaction is thus a sort of a self propagating system that goes on freely of its own accord.. We can see that what is going on here is the decomposition of the nitrogen V oxide gas as shown.

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Answer:

1866.4 secs

Explanation:

The integrated rate law for first order kinetics is given by;

[A] = [Ao] ^-kt

Where;

[A] = concentration of cyclopropane at time = t

[Ao] = initial concentration of cyclopropane

k = rate constant

t = time taken

From the question, we are told that 99% of cyclopropane disappeared hence;

[A] = 0.290 - (0.99 * 0.290)

[A] = 0.290 - 0.2871

[A] = 0.0029 M

Hence

0.0029 = 0.290 e^-2.74 x 10^ - 3 * t

0.0029/0.290 = e^-2.74 x 10^ - 3 * t

0.01 = e^-2.74 x 10^ - 3 * t

ln(0.01) = -2.74 x 10^ - 3 * t

-4.61 = -2.74 x 10^ - 3 * t

t= -4.61/-2.74 x 10^ - 3

t = 1866.4 secs

The rate constant (k) for a chemical reaction can be determined experimentally by measuring the reaction rate (v) at different concentrations of reactants and plotting the data using a suitable rate law equation.

There are different methods to determine the rate constant depending on the type of reaction, but a general approach is as follows:

Conduct the reaction under different initial concentrations of reactants while keeping other variables constant such as temperature, pressure, and pH.

Measure the reaction rate at each concentration by monitoring the change in concentration of reactants or products over time.

An overview was given based on incomplete information.

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the answer is False

Hope its hlp

Answer:

Explanations:

For a chemical reaction to be balanced, the total number of moles of elements at the reactant must be equal to the number of moles at the product.

Given the chemical reaction;

Equating the number of moles of elements on both sides:

For the oxygen element:

2a = 2c + d ................... 1

For the carbon element;

6b=c

For the Hydrogen element:

14b = 2d

7b = d .............................. 3

Assume a = 2;

Equation 1 becomes:

2(2) = 2c + d

4 = 2c + d ................,....4

From equation 2

b = c/6 .............................. 5

From equation 3:

b = d/7 ...................... 6

Equating 5 and 6

c/6 = d/7

7c = 6d

c = 6d/7 ........................... 7

Substitute equation 7 into 4 to have:

4 = 2c + d

4 = 2(6d/7) + d

4 = 12d/7 + d

4 = (12d+7d)/7

28 = 19d

d = 28/19

To get the value of b:

b = d/7

b = 28/19 * 1/7

b = 28/133

Answer:

0.474 moles of C₆H₆OS

Explanation:

Step 1: Write the balanced equation

2 C₆H₆OS + 11 O₂ ⇒ 12 CO + 6 H₂O + 2 SO₃

Step 2: Establish the appropriate molar ratio

According to the balanced equation, the molar ratio of C₆H₆OS to SO₃ is 2:2.

Step 3: Calculate the moles of C₆H₆OS reacted if 0.474 moles of SO₃ are produced

We will use the previously established molar ratio.

0.474 mol SO₃ × 2 mol C₆H₆OS/2 mol SO₃ = 0.474 mol C₆H₆OS

Answer:

Explanation: all the answer for the question is that link

Answer:

The southern hemisphere is currently experiencing "Summer"

Explanation:

The Southern hemisphere is experiencing summer because it is closer to the sun than the Northern Hemisphere and also, direct light is more hotter than indirect light.

So, first, let's try an EXPERIMENT!

Take a VERY bright flashlight or a very small laser that can't harm you or just burn a paper in 1 second.

Then, take a piece of paper, or maybe just your skin, (like your hand) and place it under the light or laser, (for the laser, you should probably take the paper), and place the light source right above your skin, then, after some time, when it gets hot, measure the temperature. (around like 30 seconds later),

Note down the temperature...

Now, do the same thing, accept, do it in a very weird angle, face it towards your paper or hand, but, do it in an angle. More than like 30 degrees. Then, after some time, note down the temperature.

You probably, noticed, that the direct light (the one with the straight light facing your paper or skin, was hotter). Look at the image below, and you can understand better.

So, the same thing applies to the earth. The southern hemisphere in this picture is facing more directly to the sun than the northern hemisphere. That is why your answer is

Thank you! Please mark me Brianliest!

Remember to have fun, and a nice day!

Answer:   summer

Explanation:

Answer:

Water and salt can be separated through the process of distillation or evaporation.

Explanation:

if it helped u please mark me a brainliest :-))

At before Duberinor,Mendeleev tried to use atomic weight but they failed .

Answer:

-14.4kJ

Explanation:

The value of heat energy in a bomb calorimeter with  a glucose sample of mass 4.40 g if changes temperature from 15 to 18 degree celsius is 16369.54 kJ.

Calorimeter is a thermal device used to determine the heat evolved or absorbed from a reaction. From this we can also calculate the enthalpy change.

If the enthalpy is negative, then the reaction is endothermic. If enthalpy change is positive, then the reaction is exothermic. The equation for finding the heat energy q from the mass, temperature change and heat capacity of calorimeter is given below:

q = mc ΔT.

It is given that the total mass is 804.40 g and heat capacity of the calorimeter is 550 J/°C g, then the heat energy  q is calculated as follows:

q = 804.40 g × 550 J/°Cg (18.7 °C - 15 °C)

  = 16369540J

  = 16369.54 KJ.

Hence, the value of q for the bomb calorimeter is 16369.54 KJ.

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Answer:

nCl2=2x3/2=3(mol)  => mCl2=nxM=3x71=213

Explanation:

Sulfuric acid, Nitrogen, Oxygen, Ethylene, Propylene are some of the examples of heavy chemicals in chemical industries.

Explanation:

Sulfuric acid ():

Removing impurities during refining of petroleum

Removing metallic oxides prior to electroplating and metal galvanizing

Removing water during chemical reactions

Acting as a reactant in the manufacture of rayon and nitroglycerine

Nitrogen (₂):

In the manufacture of steel and other metals

In cooling concrete, which further improves the properties of the building material

In freezing soggy ground, further making construction easier.

Ethylene (C₂H₄):

To manufacture ethanol for industrial uses.

To produce polyester

To produce synthetic rubber

Answer:

Examples of fine chemicals include active pharmaceutical ingredients (API), peptides and proteins, steroids, alkaloids, and biocides.

Explanation:

Answer:

D. Compressibility​

Explanation:

4.7 × 10²⁴ atoms Li

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

7.8 mol Li

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

We are told to round to 2 sig figs. Follow sig fig rules and round.

4.69716 × 10²⁴ atoms Li ≈ 4.7 × 10²⁴ atoms Li

One mole of aluminum  contains 6.02 × 10²³ Al  atoms or formula units. Hence, 4.70 × 10²⁴ atoms  of Al  contains 7.8 moles of Al.

One mole of a substance is its amount containing 6.02 × 10²³  atoms or molecules. This number is called Avogadro number. One mole of every elements contains Avogadro number of atoms.

Similarly one mole of every compound contains 6.02 × 10²³  molecules. The mass of one mole of an element  is called its atomic mass.

Al is 13th element in periodic table. Zn is a transition metal.  One mole of Al  contains 6.02 × 10²³ Al atoms . Hence number of moles of  4.70 × 10²⁴atoms  is:

4.70 × 10²⁴ / 6.02 × 10²³  =7.8 moles  .

Hence, there will be 7.8 moles of  aluminum.

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The name of the salt tells us that:

a) there is just one other element combined with the metal by looking at the suffix of the salt's name.

b) the presence of oxygen in a salt can be indicated by the name of the salt.

a) The name of a salt can tell us that there is just one other element combined with the metal by looking at the suffix of the salt's name. If the salt name ends in "-ide," it indicates that the salt is composed of a metal and a single non-metal element.
For example, sodium chloride (NaCl) and potassium bromide (KBr) are salts where the metal (sodium and potassium) is combined with a single non-metal element (chlorine and bromine, respectively). The "-ide" suffix suggests the presence of only one other element in the salt.

b) The presence of oxygen in a salt can be indicated by the name of the salt. If the salt name includes the element oxygen, it suggests that oxygen is present in the salt compound.
For example, sodium carbonate (Na₂CO₃) and calcium sulfate (CaSO₄) contain the element oxygen in their chemical formulas. The presence of oxygen in the salt is implied by the name and the combination of elements in the compound.

Therefore, the name of salt tells us that there is just one other element combined with the metal and there is oxygen present in the salt

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Answer:

The crystal field stabilization energy for the octahedral ion hexacyanomanganate(III) , if the wavelength of maximum absorption for the ion is 600 nm is - 1987.59kJ/mole

Explanation:

Lets calculate -:

 Crystal field stabilization energy -

                    \(E=\frac{hc}{\pi }\)

   where h = planks constant = \(6.626\times10^-^3^4 Js\)

             c= velocity of light = \(3\times10^8m/second\)

           \(\pi =wavelength=600nm=600\times10^-^9m\)

           \(E=\frac{6.626\times10^-^3^4\times3\times10^8}{600\times10^-^9}\)

                =\(0.033\times10^-^1^6 J/ion\)

              = \(0.033\times10^-^1^6\times6.023\times10^2^3\)

             = \(0.198759\times10^7 J/mole\)  = \(1987.59\times10^3J/mole\)

             = \(1987.59kJ/mole\)

 Thus , the crystal field stabilization energy for the octahedral ion hexacyanomanganate(III) is  1987.59kJ/mole  

Answer:

There are two dots are present on the left side of calcium atom which represents the unpaired electrons present in the outermost shell. This structure is presented by Lewis in order to show the number of unpaired electrons in the atom.

Explanation: