The graph shows the reaction AB → A+B+ heat.
If the graph indicates how quickly the reaction is progressing,
then the concentration of which component of the equation is
shown in the graph?

Oreactant

O product A

O product B

O heat

Help asap 20pts

Answer:

B. Newton’s second law

Explanation:

correct me if im wrong

Answer:

Its c newton third law

Explanation:

His third law states that for every action (force) in nature there is an equal and opposite reaction. In other words, if object A exerts a force on object B, then object B also exerts an equal and opposite force on object A. Notice that the forces are exerted on different objects.

To prepare a 1M solution of l2 in 250mls of water, you will need to add 250 grams of l2 to 250mls of water.

What do you mean by solution?

A solution is a mixture of one or more substances that have been dissolved in a solvent. It can refer to a wide variety of mixtures, including solutions in chemistry, physics, mathematics, and other fields. Solutions can be either gas, liquid, or solid in nature.

To make a 1M solution of l2 in 250mls of water, you need to add 250 grams of l2 to 250mls of water. This is because the molarity of a solution is defined as the number of moles of solute per liter of solution. Since we are making a 1M solution, this means we need 1 mole of l2 per liter of solution. Since 250mls is 0.25 liters, we need 0.25 moles of l2. Since the molar mass of l2 is 145.93 g/mol, 0.25 moles of l2 would be equal to 36.48 grams, but we must round up to the nearest whole number, which is 250 grams.

To know more about solution,

https://brainly.com/question/11337199

#SPJ1

The element is chromium.

Metallic elements lose electrons to form positively-charged ions.

A metal that has lost an electron will have a +1 charge

Similarly, a metal that has lost two electrons will have a +2 charge.

A metal that has lost three electrons will have a +1 charge.

Thus, the neutral metallic element will have 21 + 3 electrons = 24 electrons

The atomic number of the element is 24.

The element that has atomic number 24 is chromium.

Therefore, the element is chromium.

In conclusion, metals lose electrons to form positively-charged ions.

Learn more about ions at: https://brainly.com/question/14511468

#SPJ1

Answer:

Micro means 0.000001. So 10,000 times larger than that is the Centi unit, which is 0.01

The sample containing 7.1 × 10^19 molecules of H2O corresponds to approximately 1.18 × 10^(-4) moles of H2O.

To determine the number of moles of H2O in a sample containing 7.1 × 10^19 molecules, we need to use Avogadro's number, which states that 1 mole of any substance contains 6.022 × 10^23 molecules.

Given that there are 7.1 × 10^19 molecules of H2O in the sample, we can calculate the number of moles using the following formula:

Moles = Number of molecules / Avogadro's number

Moles = 7.1 × 10^19 / 6.022 × 10^23

Moles ≈ 1.18 × 10^(-4) moles

For more such questions on molecules

https://brainly.com/question/24191825

#SPJ8

Answer:

all atoms must have 6 protons to be a carbon atom

Explanation:

brainliest?

Answer:

the answer would be 9,448.8

The mass of 9.3 × 10¹⁶ lead atoms is equal to 0.032 mg.

Avogadro’s number represents the number of entities in one mole of any substance. Generally, these units can be molecules, atoms, ions, electrons, or protons, depending upon the type of chemical reaction or reactant and product.

The value of Avogadro’s constant is approximately equal to 6.022 × 10²³ mol⁻¹.

Given, the number of atoms of the lead =  9.3 × 10¹⁶

The atomic mass of the lead = 207.2 g/mol

So 6.022 × 10²³ atoms of lead have mass = 207.2g

Then 9.3 × 10¹⁶ lead atoms will have mass \(=\frac{207.2\times 9.3\times 10^{23}}{ 6.022\times 10^{23}}\)  = 31.998 ×10⁻⁷g

As we know, 1 gram = 1000 mg

The mass of the  9.3 × 10¹⁶ lead atoms =  31.998 ×10⁻⁴ mg = 0.0032 mg

Therefore, the mass of 9.3 × 10¹⁶ lead atoms is  0.032 mg.

Learn more about Avogadro's number, here:

brainly.com/question/11907018

#SPJ2

Answer:

(D) - 16.6 kcal

Explanation:

Hello,

In this case, the Gibbs free energy for the given reaction is computed in terms of the Gibbs free energy of formation of each species involved in the chemical reaction:

\(\Delta _rG=2\Delta _fG_{NO_2}-2\Delta _fG_{NO}-\Delta _fG_{O_2}\)

Thus, it is found for nitrogen monoxide, oxygen and nitrogen dioxide the following Gibbs free energies of formation: 87.6, 0 and 51.3 kJ/mol respectively, therefore we compute:

\(\Delta _rG=2(51.3kJ/mol)-2(87.6kJ/mol)=-72.6kJ*\frac{1kcal}{4.184kJ} \\\\\Delta _rG=-17.35kcal\)

The closest result is (D) - 16.6 kcal, as such difference is noticed when different sources for thermochemical data are used, in this case, the NIST data were used.

Best regards.

40 quarters would need to be lined up in a row to reach a length of 1 meter.

To determine how many quarters would have to be lined up in a row to reach a length of 1 meter, we need to convert the given length of a quarter into meters and then divide the total length by the length of a single quarter.

1 meter is equal to 100 centimeters (since there are 100 centimeters in a meter).

Each quarter has a length of 2.5 centimeters.

To find out how many quarters are needed to reach 1 meter, we divide 100 centimeters by 2.5 centimeters:

100 cm ÷ 2.5 cm = 40

Therefore, you would need 40 quarters lined up in a row to reach a length of 1 meter.

Here's a step-by-step breakdown of the calculation:

Convert 1 meter to centimeters: 1 meter x 100 cm/m = 100 cm.

Determine the number of quarters needed: 100 cm ÷ 2.5 cm = 40 quarters.

Therefore, 40 quarters would need to be lined up in a row to reach a length of 1 meter.

For more such questions on quarters visit:

https://brainly.com/question/15363133

#SPJ8

Answer:

1 mol of electron is exchanged. The mol of electrons that is released by the iron, is gained by the silver.

Explanation:

We need to determine the half reactions:

Ag⁺ → Ag

These is the reduction reaction, where Silver decreases the oxidation state. It gained 1 mol of e⁻

Fe²⁺ → Fe³⁺

In this case, iron increases the oxidation state, from +2 to +3. It has released 1 mol of electrons. This is the oxidation reaction.

The complete redox is:

Ag⁺ + 1e⁻ → Ag

Fe²⁺ → Fe³⁺ + 1e⁻

Ag⁺(aq) + 1e⁻ + Fe²⁺(aq) ⇌ Ag(s) + Fe³⁺(aq) + 1e⁻

The electrons will be cancelled.

In the redox reaction Ag⁺(aq) + Fe²⁺(aq) ⇌ Ag(s) + Fe³⁺(aq),

1 mole of electrons is exchanged.

Let's consider the following balanced redox reaction.

Ag⁺(aq) + Fe²⁺(aq) ⇌ Ag(s) + Fe³⁺(aq).

We can identify both half-reactions.

We can conclude that:

In the redox reaction Ag⁺(aq) + Fe²⁺(aq) ⇌ Ag(s) + Fe³⁺(aq),

1 mole of electrons is exchanged.

Learn more: https://brainly.com/question/2671074

Answer:

Explanation:

1M

Answer:

The answer is 10cm^3

Explanation:

5x1x2=10

Mind marking me brainliest? :)

Answer:

b. single displacement

From the stoichiometry of the reaction, 0.74 moles of aluminium oxide is produced.

The equation of the reaction is;

4Al + 3O2 --> 2Al2O3

Number of moles of Al =  40.0/27 g/mol = 1.48 moles

Number of moles of O2 = 19.0 g/32 g/mol = 0.59 moles

Now;

4 mols of Al reacts with 3 moles of O2

1.48 moles of Al reacts with  1.48 moles ×  3 moles/4 mols

= 1.11 moles

We can see that O2 is the reactant in excess.

Hence;

4 moles of Al produces 2 moles of aluminium oxide

1.48 moles of Al produces 1.48 moles ×  2 moles/4 moles = 0.74 moles of aluminium oxide

Learn more about stoichiometry: https://brainly.com/question/9743981

Answer:

K = 3.3

Explanation:

Nitric acid, HNO3, reacts with nitrogen monoxide, NO, to produce nitrogen dioxide, NO2 and water H2O as follows:

2HNO3(g) + NO(g) → 3NO2(g) + H2O(g)

Where equilibrium constant, K, is:

K = [NO2]³[H2O] / [HNO3]²[NO]

[] is the molar concentration of each species at equilibrium.

To solve this question we need to find molarity of each gas and replace these in the equation as follows:

[NO2] -Molar mass NO2-46.0g/mol-

18.6g * (1mol/46.0g) = 0.404mol / 7.7L = 0.0525M

[H2O] -Molar mass:18.01g/mol-

236.7g * (1mol/18.01g) = 13.14 moles / 7.7L = 1.707M

[HNO3] -Molar mass:53.01g/mol-

16.2g * (1mol/53.01g) = 0.3056 moles / 7.7L = 0.0397M

[NO] -Molar mass: 30.0g/mol-

11.0g * (1mol/30.0g) = 0.367 moles / 7.7L = 0.0476M

Replacing:

K = [NO2]³[H2O] / [HNO3]²[NO]

K = [0.0525M]³[1.707M] / [0.0397M]²[0.0476M]

Answer:

CaCl2

Explanation:

The ionic solid CaCl₂ would have the largest lattice energy. Therefore, option (c) is correct.

Lattice energy is the heat of formation when one mole of crystalline ionic solid is generated from its constituent ions in their gaseous state.

For example, the lattice energy of sodium chloride crystal is the energy change of reaction when Na⁺ and Cl⁻ ions react to produce a NaCl crystal, which is equal to -786 kJ/mol.

The relation between lattice energy and lattice enthalpy at constant pressure is given by:

ΔU (lattice) = ΔH (lattice) - PΔV

Lattice energy is directly proportional to the charge on ions and inversely proportional to the interionic distance between ions.

For NaCl and NaF the charge on the ions is +1 and -1 while the size of the ions is small. So they have less lattice energy.

CsI ionic solid have a larger size of ions Cs⁺ and I⁻. So CsI will have less lattice energy. CsBr₂ has +2 charge on calcium but the size of both ios is larger. So, CsBr₂ will have less lattice energy.

CaCl₂ has + 2 charge on calcium as well as the ionic radius is also samll. Therefore, CaCl₂ would have the largest lattice energy.

Learn more about lattice energy, here:

https://brainly.com/question/13169815

#SPJ2

Answer:

Cells are the basic structures of all living organisms. Cells provide structure for the body, take in nutrients from food and carry out important functions. ... These organelles carry out tasks such as making proteins?, processing chemicals and generating energy for the cell

Answer: I absolutely love this question! Biology is so interesting, so I always love to answer the curiosity of others regarding biology, such as that!

Cells are simply the basic structures of all organisms, that are living, of course! Cells provide structure for the body, and they also take in nutrients that your body needs from food and they carry out important functions. These organelles carry out tasks such as making proteins, processing chemicals, and generating energy for the cell. Isn’t that cool?

Hope this helped! <3

In order to properly balance an equation, we need to make sure that the same amount of elements on the reactants side matches the number of elements on the products side, we can do that by increasing the number in front of each molecule, the so called stoichiometric coefficient. In the reaction from the question we can properly balance by adding the following stoichiometric coefficients

For our reactions we have:

1.

Mg(OH)2 + 2 HCl -> MgCl2 + 2 H2O

1, 2, 1, 2

2.

H2CO3 + Sr(OH)2 -> 2 H2O + SrCO3

1, 1, 2, 1

3.

4 Ag + O2 -> 2 Ag2O

4, 1, 2

4.

N2O5 + H2O -> 2 HNO3

1, 1, 2

The number or amount of moles of magnesium sulfide in 100g of MgS is 1.774 moles.

The number of moles in a substance can be calculated by dividing the mass of the substance by its molar mass as follows:

Mole is the base unit of amount of substance i.e. the amount of substance of a system which contains exactly 6.02214076 × 10²³ elementary entities.

no of moles = mass ÷ molar mass

According to this question, 100g of magnesium sulfide is given. The molar mass of magnesium sulfide is 56.38 g/mol.

moles = 100g ÷ 56.38g/mol

moles = 1.774 moles

Learn more about moles at: https://brainly.com/question/26416088

#SPJ1

Answer:B apez

Explanation:

Answer:

The type of bond is determined by the difference in elecronegtivity of the atom

Explanation:

A P E X

Urea is the primary nitrogenous byproduct of protein breakdown in all mammals as well as certain fishes. Therefore, 1.81×10²¹atoms are present.

Urea, commonly known as carbamide, is a carbonic acid diamide. It has the formula H2NCONH2. Urea is used as a fertilizer as well as feed additive, as well as a beginning ingredient in the production of polymers and pharmaceuticals. It is a colorless, crystalline chemical that dissolves at 132.7 degrees Celsius (271 degrees Fahrenheit) and decomposes after boiling.

Urea is the primary nitrogenous byproduct of protein breakdown in all mammals as well as certain fishes. The substance is found not just in all animals' urine, but also mammalian blood, bile, milk, as well as sweat.

mole =given mass /molar mass

     =2×453.6g/60.06

    =907.2/60.06

    = 15.10

atoms of nitrogen = 2×15.10 × 6.022×10²³=1.81×10²¹atoms

Therefore, 1.81×10²¹atoms are present.

To learn more about urea, here:

https://brainly.com/question/14811017

#SPJ1

Taking into account the definition of Avogadro's Number, the number of moles given 9.04×10²³ formula units are 1.5 moles.

Avogadro's Number is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance.

Its value is 6.023×10²³ particles per mole. Avogadro's number applies to any substance.

Considering the definition of Avogadro's Number, you can apply the following rule of three: if 6.023×10²³ formula units are contained in 1 mole of NaCl, then 9.04×10²³ formula units are contained in how many moles of NaCl?

amount of moles of NaCl= (9.04×10²³ formula units × 1 mole)÷ 6.023×10²³ formula units

amount of moles of NaCl= 1.5 moles

Finally, 1.5 moles of NaCl are 9.04×10²³ formula units.

Learn more about Avogadro's Number:

brainly.com/question/11907018

brainly.com/question/1445383

brainly.com/question/1528951

#SPJ1

The percentage of the sulfur (S) in the compound CuSO₄ is 20.1 %.

The percentage of an element in a compound can be determined as the number of parts by mass of that element present in 100 parts by mass of the given compound.

First, calculate the molecular mass of the given compound by the addition of the atomic masses of all the present elements in the molecular formula. Then, the percentage of the elements can be determined by dividing the total mass of the element by the molar mass of the compound multiplied by 100.

Given, the atomic mass of copper, sulfur, and oxygen is 63.55 g, 32.07 g, and 16.0g respectively.

The molecular mass of CuSO₄ =  63.55 + 32.07 + 4(16.0)  = 159.62 g

The mass percentage of the sulphur = (32.07/159.62) × 100 = 20.1 %

Therefore, the mass percentage of the sulfur is equal to 20.1 %.

Learn more about  the mass percentage, here:

brainly.com/question/16750428

#SPJ1

This problem is providing the number of molecules of nitrogen at STP and asks for the volume they take up. At the end, the result turns out to be 33.6 L according to the following.

In chemistry, gas laws are used to relate pressure, temperature, volume and moles as an indicator of the behavior of gases. Thus, since this problem provides the number of molecules of nitrogen gas at STP, standard pressure and temperature (1atm and 273K), one knows the Avogadro's law must be utilized.

In such a way, this law allows us to know that 1 mole of any substance is related to 6.022x10²³ particles and that 1 mole of the gas occupies 22.4 L at STP. Hence, we can find the volume with the following setup:

\(9x10^{23}molecules*\frac{1mol}{6.022x10^{23}molecules} *\frac{22.4L}{1mol} \\\\=33.5L\)

Which can be rounded then to 33.6 L.

Learn more about ideal gases: brainly.com/question/8711877

Answer:

An ionic bond forms when atoms transfer electrons.

Explanation:

Ionic bonds are formed when atoms transfer electrons. (In contrast, covalent bonds are formed when atoms share electrons.)

There's a distinction between the two: when two atoms react to form an ionic bond, one atom would completely lose one electron, while the other would completely gain that electron. The atom that loses the electron becomes a positively-charged ion called a cation, whereas the atom that gains the electron becomes a negatively-charged ion called an anion.

For example, consider the reaction between a sodium \(\rm Na\) atom and a chlorine \(\rm Cl\) atom: \(\rm Na + Cl \to NaCl\).

When the sodium atom and the chlorine atom encounter, the sodium atom would lose one electron to form a positively-charged sodium ion, \(\rm Na^{+}\). The chlorine atom would gain that electron to form a negatively-charged chlorine ion \(\rm Cl^{-}\).

These two ions will readily attract each other because of the opposite electrostatic charges on them. This electrostatic attraction (between two ions of opposite charges) is an ionic bond.

Overall, it would appear as if the sodium \(\rm Na\) atom transferred an electron to the chlorine \(\rm Cl\) atom to form an ionic bond.

In contrast, when two atoms react to form a covalent bond, they share electrons without giving any away completely. Therefore, it is possible to break certain covalent bonds apart (using a beam of laser, for example) and obtain neutral atoms.

On the other hand, when an ionic bond was broken, the result would be two charged ions- not necessarily two neutral atoms. The electron transfer could not be reversed by simply breaking the bond.

For example, when table salt \(\rm NaCl\) is melted (at a very high temperature,) the ionic bond between the sodium ions and chloride ions would (mostly) be broken. However, doing so would only generate a mixture of \(\rm Na^{+}\) and \(\rm Cl^{-}\) ions- not sodium and chlorine atoms.

Answer:yea it’s transfer

Explanation:

To answer this question, we need to know the concentration of the RbOH solution. Without this information, we cannot determine the amount of RbOH present in the 28.3 mL sample.
However, if we assume that the concentration of the RbOH solution is known, we can use the formula:
moles of solute = concentration x volume

To find the number of moles of RbOH in the 28.3 mL sample. From there, we can use the molar mass of RbOH (102.47 g/mol) to calculate the mass of RbOH in the sample.
For example, if the concentration of the RbOH solution is 0.1 M, then:
moles of RbOH = 0.1 M x 0.0283 L = 0.00283 moles
mass of RbOH = 0.00283 moles x 102.47 g/mol = 0.290 g
So, a 28.3 mL sample of a 0.1 M RbOH solution would contain 0.290 g of RbOH.
In summary, the amount of RbOH present in a 28.3 mL sample of a solution depends on the concentration of the solution. Without knowing the concentration, we cannot determine the amount of RbOH in the sample.

complete question not found in the search engine.

For more such question on concentration

https://brainly.com/question/29661329

#SPJ11

Explanation:

It is the emission of electron from a metal under the effect of light is known as photo electric effect

I hope this imformation help full for you