Write a paragraph explaining the mechanism of a newton's cradle. Include which law the cradle represents and the forces acting upon it. Also, what are some factors that can prevent the cradle form working?

Answer:

Toxic pollution

Explanation:

Gasoline is a harmful chemical

The given question is incomplete the complete question is  

The police have made a drug bust and confiscated a large quantity of suspected cocaine. The police bring a sample to you, a forensic chemist, for analysis. The chemical formula of cocaine is C17H21NO4. After analyzing the mystery compound you find that it is 67.296% carbon,6.991% hydrogen, 4.618% nitrogen, and 21.095% oxygen. You also find that it has a molar mass of 303.35g/mol

Calculate the mystery compound’s empirical formula. Show full solutions.

The police have made a drug bust and confiscated a large quantity of suspected cocaine the police bring a sample to you, a forensic chemist, for analysis the chemical formula of cocaine is C₁₇H₂₁NO₄. After analyzing the mystery compound you find that it is 67.296% carbon,6.991% hydrogen, 4.618% nitrogen, and 21.095% oxygen. You also find that it has a molar mass of 303.35g/mol and the mystery compound is  C₁₇H₂₁NO₄  means cocaine

The cocaine is the local anesthetic and it is also used for to cause loss of feeling or numbness and drug is the any substances that is used to prevent, diagnose, treat and relieve symptoms of abnormal condition and drugs can also affect how the brain and the rest of the body work and cause changes in mood, awareness, thoughts, feelings, or behavior

Here given chemical formula of cocaine is C₁₇H₂₁NO₄ and in that carbon percentage is 67.296%  and hydrogen percentage is ,6.991%,  nitrogen percentage is 4.618%, and oxygen percentage is 21.095% and given molar mass is 303.35g/mol then

We have to find mystery compound’s empirical formula =?

So given mass/molar mass

Then we have to find mole ratio and number of moles so here 67.296% carbon then  67.296/303.35g/mol = 0.22g

6.991% hydrogen = 6.991/303.35g/mol = 0.023g

4.618% nitrogen = 4.618/303.35g/mol  = 0.015g

21.095% oxygen = 21.095/303.35g/mol = 0.069g

Mass of carbon/molar mass of carbon

67.296/12 = 5.6 mole

Mass of hydrogen/molar mass of hydrogen

6.991/1 = 6.9 mole

Mass of oxygen/molar mass of oxygen

21.095/16 = 1.3 mole

Mass of nitrogen/molar mass of nitrogen

4.618/14 = 0.32 mole

So now dividing the smallest mole then in that 0.32 is the smallest mole

5.6 mole carbon/0.32 mole = 17

6.9 mole hydrogen/0.32 mole = 21

1.3 mole of oxygen/0.32 mole = 4

0.32 mole of nitrogen/ 0.32 mole = 1

So the empirical formula is C = 17, H = 21, O = 4, N = 1

So, C₁₇H₂₁NO₄

And the mystery compound is C₁₇H₂₁NO₄

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Answer:

C. trigonal Planar

Explanation:

Tetrahedral is 4 connected

Bent is 2 connected with a lone pair

Linear is 2 connected in a line

Trigonal Planar is the one with 3 connected.

Answer:

C: Trigonal Planar

Explanation:

Tetrahedral is four connected

Bent is 2 linked with a lone pair

Linear is two connected in a line

Trigonal Planar is the one with 3 connected.

Answer:

10 grams

Explanation:

The mass equals the density times the volume it displaces, so 5*2 = 10 grams. If you look at the units, you will see that they also cancel out.
you have 5 grams / ml, and 2 ml, so when 5 grams/ml and 2 ml are multiplied, the result is 10 grams*ml/ml, and since ml/ml = 1, the final unit of the answer would be 10 grams.

The mass of sodium phosphate needed to make 375 mL (0.375 L) of a solution with a molarity of sodium ions of 0.900 M is 18.45 g.

Because each mole of sodium phosphate produces 3 moles of sodium ions upon dissociation, the molarity (c) of the sodium phosphate solution will be c = 0.900 M / 3

c = 0.300 M.

Now we can use the molarity and the volume of the solution (V) to find the required number of moles (n) of sodium phosphate.

c = n/V ⇒ n = c*V

n = 0.300 M * 0.375 L

n = 0.1125 mol

Finally, using the molar mass of sodium phosphate (M = 164 g/mol), we can calculate the mass (m) of sodium phosphate required:

n = m/M ⇒ m = n*M

m = 0.1125 mol * 164 g/mol

m = 18.45 g

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Answer: The answer is 40.078

Explanation: Ezzy

Answer:

mol CCl4 = 1.294 mol

Explanation:

moles (n) = (mass)/(molar mass)

∴ mass = 199 g CCl4

∴ molar mass = 153.82 g/mol

⇒ nCCl4 =  199 gCCl4 / 153.82 g/mol

⇒ nCCl4 = 1.294 mol CCl4

Answer:

1.39 x 10^25 atoms

Explanation:

12 amu of C has 6.02 x 10^23 atoms

so 276.23 amu has

(276.23)(6.02 x 10^23)/(12) = 1.39 x 10^25 atoms

Answer: Lower Left!

Explanation: I just took the quiz.

The statement that accurately contrast a compound and a mixture is; Mixtures contain two or more elements physically combined and compounds contain two or more elements chemically combined.

The term mixture has to do with a combination of two or more substances that are not chemically combined hence they can easily be separated by the use of physical methods. Hence they are not in any way compounds.

A compound is a substance that has been formed by the chemical combination of the atoms of elements. This implies that the components of a compound can not be separated by physical methods.

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If I was given a mixture of iron filings and sand, the explanation I would give to prove that it is a mixture is that I would show that they are a homogeneous mixture.

The procedure that I would give to show they are a mixture is by showing how they can be separated and this is through the use of a magnet.

This is because sand is non-magnetic and iron fillings can be used as magnets.

This refers to the material that contains two or more elements that are NOT chemically bonded.

Hence, we can see that the explanation of mixture is given below.

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The solar panel would represent energy, so a solar panel would be one of them!

Studying cell illness models helps researchers better understand how diseases arise, which in turn helps them find novel molecular targets for particular therapeutics. Cell disease models can also be utilized to assess prospective therapeutic strategies. Thus, option C is correct.

The two-piece plant cell model depicts the normal plant cell's structures as seen through an electron microscope. The cytoplasm and all significant organelles are depicted in raised relief and colour on the plant cell. The plant cell model has the following features: cellular wall.

The process of generating a digital reproduction of each procedure, piece of machinery, and workflow within a plant is known as “plant modelling.”

Therefore, A solar panel would be one of them, since it would stand in for electricity.

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Answer:

2.75 x 10^24 atoms

Explanation:

1 mole = 6.022 x 10^23 atoms

4.56 moles has:

4.56 x 6.022 x 10^23 = 2.75 x 10^24 atoms

According to the given statement The density of the element is 6.82 g/ml.

Density is the measure of how firmly a material is packed. It has such definition since it is the mass per unit volume. Numeral for density D or The formula for calculating density is m/V, where m is the mass and V is the volume of the object.

Grams per cubic centimeter are indeed a typical measurement unit for density. For example, while Earth has a density of up to 6.5 grams, water has a density of 1 grams per cubic centimeter. Another method to state density is in kilograms per cubic meters (in metre-kilogram-second or SI units).

Mass of solid (M)= 10.23g

Initial volume of water V[tex]_1[/tex] = 20 ml

Final volume of water V[tex]_2[/tex] = 21.5 ml

Volume of solid (V) = V[tex]_2[/tex]– V[tex]_1[/tex]

= 21.5 - 20

= 1.5 ml

Density of element (D) = M / V

= 10.23g / 1.5 ml

= 6.82 g/ml.

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Due to how simple it is to convert this gas to a liquid, it is known as liquefied gas. LPG can be converted from a gas to a liquid by applying low pressure or refrigeration.

Liquefied petroleum gas (LPG) is a fuel used in a variety of home appliances for heating, cooking, and producing hot water. Due to how simple it is to convert this gas to a liquid, it is known as liquefied gas. LPG can be converted from a gas to a liquid by applying low pressure or refrigeration. LPG is originally used for gas burners, cooktops, and ovens because these equipment, together with heaters, fireplaces, and gas hot water systems, are common in homes. Gas-powered dryers are also available.

Examples of outdoor gas equipment include fire pits, pizza ovens, patio heaters, rooftop fireplaces, and BBQs. Propylene, butane, isobutan butylenes,e, and combinations of these gases make up the majority of LPG.

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Aspects covered by Bohr's atomic model are : Electrons do not have energy, The energy is determined by the orbit.

Features of Bohr's atomic model are:

1) Electrons revolve around the nucleus in orbits .Each orbit has a definite energy called as energy shell or energy level. Energy of electrons is determine by the energy levels.

2) Orbits is designated as K, L, M, N shell.

3) When an electron jumps from a higher energy level to lower level it emits energy and when it jumps from lower to higher energy level it absorbs energy.

thus, Aspects covered by Bohr's atomic model are : Electrons do not have energy, The energy is determined by the orbit.

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Answer:

It’s the 1st option and 4th option.

Explanation:

E is standard the electrode potential of a reaction, increasing the value of K will Increase the forward reaction.

A measure of the reducing power of an element or compound. The IUPAC Gold Book defines it as Split the reaction into two half-reactions. where n is two. The following example shows how to use the Nernst equation to calculate the potential of an electrochemical cell under non-standard conditions.

If both half-reactions have different numbers of electrons multiply both equations by the appropriate number so that n is the same in both equations, then use this value of n in the equations before generating electricity. increase. The energy used is released during spontaneous chemical reactions. When the applied external potential is greater than the Ecell of the electrochemical cell, the reaction is reversed. It started working as an electrolytic cell and vice versa.

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The unit of both types of energy is the joule (kg × m² × s⁻²).

Show the units of kinetic energy

The equation for kinetic energy is/2 × m × v²

[K] = kg × (m/s)²

[K] = kg × m² × s⁻² = J

Show units of gravitational potential energy

The formula for the potential energy of gravity is: g × h

[G] = kg × m/s² × m

[G] = kg × m² × s⁻² = J.

Gravitational potential energy is the energy stored in an object due to its height above the ground. This depends on the mass of the object, the acceleration due to gravity, and the height of the object. Kinetic energy is the energy that an object has when it moves. One of the most important similarities between potential energy and kinetic energy is that they can be converted into each other's energy forms. When a force is applied to potential energy, it is converted into kinetic energy.

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The pressure of the Moxie's tank in the summer will be 110.5 atm.

The pressure law states that  for a given mass a gas, the pressure exerted on the sides of its container is directly proportional to its absolute temperature provided the volume is constant.

Mathematically, this law can be written as;

P₁/T₁ = P₂/T₂

where;

From formula above, as the temperature of the gas increases, its pressure increases as well.

Thus, the pressure that will be observed in the Moxie's tank during the summer will be greater than 50 atm since the temperature in summer is greater than the temperature in winter.

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The complete question is below:

If the Moxie's tank has an initial pressure of 50 atm in the winter, what will be * 1 point

the pressure in the summer?

A. 5.88 atm

B. 22.6 atm

C. 110.5 atm

The classification of the reactions are;

water → hydrogen + oxygen - decomposition

iron + oxygen → iron oxide - Oxidation

The term chemical reaction has to do with an interaction that occurs between the reactants and the products so that  new substance can be formed. This is how we know that a chemical change has occurred.

We are here to sort the reactions according to the kind of changes that they represent. Recall that we do have several kinds of reactions that do take place and they are classified based on the kind of changes that are taking place there.

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Answer:

Atoms that contain an unstable combination of neutrons and protons, or excess energy in their nucleus.

Explanation:

cuz

Based on the initial and final volume of solution in each pipette, pipette A shows that 4 mL of the liquid has been dispensed.

A pipette is a lab apparatus that is used for dispensing liquids.

The volume of the liquid dispensed from the pipette is obtained bt subtraction of the initial volume of solution from the final volume of solution in the pipette.

Comparing the volume of solution dispensed from each pipette:

Volume dispensed from pipette A = 9 mL - 5 mL

Volume dispensed from pipette A = 4 mL

Volume dispensed from pipette B = 9 mL - 4 mL

Volume dispensed from pipette A = 5 mL

Therefore, the volume of solution dispensed from each pipette is as calculated above.

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The correct sequence of subshells in the diagram from the shell with the lowest to the shell with the highest energy level is 1s>2s>2p. Option C.

According to Aufbau's principle, while writing electron configuration of elements, lower energy level orbitals are filled with electrons first before the higher energy level orbitals.

Thus, the order in which electrons will fill the different orbitals would be s, p, d, and f. In other words, the lower level s orbital will get filled first, followed by lower level p orbital, d orbital, and then f orbital.

Going by this principle, the correct sequence of subshells in order of their energy level is 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p.

Therefore, the correct sequence of subshells as represented in the diagram from the lowest to the highest energy level is 1s>2s>2p.

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Answer:

Explanation:

cg c g cv

The choice that goes in the green box to cancel out mg is 10⁻³ gram. The correct option is B.

Conversion Factor: To convert from milligrams (mg) to grams (g), we use the conversion factor that 1 gram (g) is equal to 1000 milligrams (mg), or 1 g = 1000 mg.

To cancel out the unit "mg" and obtain the desired unit "g," we need to use the conversion factor with the appropriate power of 10. In this case, since we want to cancel out milligrams (mg), which is 10⁻³ times smaller than a gram (g), we use the factor 10⁻³ g/mg.

Therefore, by multiplying 43 mg by the conversion factor 10⁻³ g/mg, we can cancel out the milligram unit and find that there are 0.043 grams in 43 milligrams.

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The concentration of each substance  in mg/L are;

Zinc -  9.8 * 10^-4 mg/L

Copper - 1.1 * 10^-4 mg/L

Lead - 4.7 * 10^-3 mg/L

Mercury - 2.5 * 10^-4 mg/L

Let us recall that the term that is called concentration is used to describe the amount of substances that is present. Thus, there are several units of concentration that are in common use to day and these include;

In this case we are asked to convert the concentration of the object as it has been given in mM to mg/L as we can see above in the question.

We have that;

RMM mg/L = 1mM

Let us now convert each one;

Zinc = 1/65 * 6.42 × 10^–2 mm

= 9.8 * 10^-4 mg/L

Copper = 1/63.5 * 7.16 × 10–3 mm

= 1.1 * 10^-4 mg/L

Lead  = 1/207 *  0.965 mm = 4.7 * 10^-3 mg/L

Mercury = 1/201 *  5.00 × 10–2 mm = 2.5 * 10^-4 mg/L

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The complete ionic equation Ca(OH)2 + HClO4 → H2O + Ca(ClO4)2.

A complete ion equation describes all ions dissociated in a chemical reaction. The net ion equation cancels out ions appearing on either side of the reaction arrow. This is because they do not inherently participate in the desired reaction. An annihilated ion is called a spectator ion.

The net ionic equation describes only the species participating in the reaction while the full ionic equation also includes the spectator ion. The net ion equation must be balanced by both mass and charge. Mass balance means ensuring that the mass of each element on the product side and the educt side is equal.

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Answer:

Potassium has one electron in its valence shell(2,8,8,1) so during the reaction of potassium and fluorine that 1 electron is completely transferred to fluorine (by ionic bonding) which has 7 electrons in its outer shell(2,7). After getting an electron from potassium, it has 8 electrons in its outer shell which makes it more stable.Because Potassium lost 1 electron it is also stable as potassium now has 8 electrons in its outer shell.Potassium now has a +1 charge while fluorine has a -1 charge.

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The zinc reacts with hydrochloric acid which produces hydrogen gas along with zinc chloride, and we determine the reaction because the hydrogen gas is formed.

We know that when the zinc reacts with the hydrochloric acid, then this reaction bubbles vigorously so hydrogen gas is produced. The production of hydrogen gas is also proof that a chemical reaction is occurring.

The zinc reacts quickly with the hydrochloric acid for the formation of zinc chloride and hydrogen gas. These reactions occur in a single displacement reaction where zinc metal displaces the hydrogen to form hydrogen gas and zinc chloride.

This reaction is an exothermic reaction that produces a big amount of heat. Zn + 2HCl → ZnCl₂ + H₂

So we can conclude that hydrogen gas and zinc chloride are formed when the zinc reacts with hydrochloric acid.

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The atom belongs to a group two element and the atom is in period three since there are three shells.

The term electron configuration has to do with the way and manner in which the electrons in an atom are arranged. It is usual the there are two electrons that reside in the shell that is closest to the nucleus.

The other shells after this shell can hold a maximum of about eight electrons on the same shell until we arrive at the final shell of the atom. The element thus shown belongs to group two and period  because there are two electrons in the outermost shell and there are three shells present.

Hence, the element belongs to the alkaline earth metals.

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The law of conservation of mass states that "the mass of the reactants is equal to the mass of the products." This statement is accurate.Additionally, in a chemical equation, the number of atoms of different elements on the reactants side equals the number of atoms on the products side.

Which of the following statements is true of this reaction?

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The densities of the substances are;

Aluminum bar = 2.6 g/ml

PE rod = 0.91 g/mL

Iron bolt =  5.65 g/mL

The term density is defined as the ratio of the mass to the volume of the object. We know that mass is an intrinsic property. This means that the density of the object can be used to identify what the object that is under study is. Let us now try to find the density of each of the objects.

In this case, we have the mass and the volumes of the objects as they have been shown in the table that have here. We can now be able to find the volume of each of the objects.

Density of aluminum bar = 39 g/ 15 g/mL = 2.6 g/ml

Density of the PE rod = 21 g/23 mL = 0.91 g/mL

Density of iron bolt = 39 g/6.9 mL = 5.65 g/mL

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