Two students are working together to build two models. Both models will represent the molecular structure of sodium bicarbonate, NaHCO3 commonly known as baking soda. The students are using toothpicks to represent bonds and jelly beans to represent atoms. Red jellybeans represent sodium atoms, white jellybeans represent hydrogen atoms, black jellybeans represent carbon atoms, and blue jelly beans represent sodium atoms, white jellybeans represent hydrogen atoms, like jellybeans our cruise and carbon atoms, and we jellybeans that is an oxygen atoms.

Identify the number of each jelly bean needed to make both models.

Diagrams that show the valence electrons of atoms within a molecule are called Lewis structures, also referred to as Lewis dots or electron dot structures. Dot structures for B₂CO and C₂B₂O₂ are attached below.

The valence electrons of atoms and molecules can be visualized using these Lewis symbols and structures, whether they are found as lone pairs or enclosed in bonds.

One pair of electrons is shared by two chlorine atoms when they combine to form a chlorine molecule, for instance: According to the Lewis structure, each Cl atom has three lone pairs of electrons, or pairs of electrons that are not used in bonds, and one shared pair of electrons.

To know more about Lewis structures visit:

https://brainly.com/question/20300458

#SPJ1

In air, green light has a wavelength of 530 nm and impacted on emerald with a coefficient of refraction of 1.59.

The duration of a periodic wave is the distance over which the wave's form repeats in physics.  It is the distance between two successive matching places of the same phase on the wave, such as two neighbouring crests, troughs, or zero crossings, and it is a feature of both moving and standing waves, as well as other spatial wave patterns.

The spatial frequency is the opposite of the spectrum. The Greek symbol lambda () is frequently used to represent wavelength. In the case of a sinusoidal wave travelling at a constant speed, wavelength is inversely proportionate to frequency: waves with higher frequencies have shorter wavelengths, and waves with lower frequencies have longer wavelengths.

Learn more about   wavelength

https://brainly.com/question/13533093

#SPJ1

Equilibrium concentrations are : Question 39: 0.000798 ;  Question 40: 0.001202 M ;  Question 41:  0.001596 M. To determine the values indicated in the grid above for the given reaction, we need to use the equilibrium constant expression: Kc = [H₂][F₂]/[HF]²   where [H₂], [F₂], and [HF] are the equilibrium concentrations of the respective species.

We are given that the initial concentrations of He and F are both 0.0020 M, and we are also given that the equilibrium constant (Kc) for the reaction is 115. Using this information, we can set up an ICE table to calculate the equilibrium concentrations:

H₂(g) + F₂(g) ⇌ 2HF(g)
I:    0.0020      0.0020         0
C:   -x            -x           +2x
E:    0.0020-x 0.0020-x 0+2x
where x is the change in concentration (in M) at equilibrium.

Using the equilibrium constant expression, we can write:
Kc = [H₂][F₂]/[HF]²
115 = (0.0020-x)(0.0020-x)/(2x)²
4x⁴ - 0.004x³ - 0.000004x² + 0.00000016x - 0.0000000004 = 0

This equation can be solved using numerical methods, such as a graphing calculator or computer program. Solving this equation gives us: x = 0.000798 M
[H₂] = 0.0020 - x = 0.001202 M
[F₂] = 0.0020 - x = 0.001202 M
[HF] = 2x = 0.001596 M

Therefore, the values in the grid are:
0.0017 0.0020 0.0034 0.011
0.0017 0.001202 0.000798 0.001202
0.0017 0.001596 0.001596 0.001596

Question 39: Determine x in the grid above.
x = 0.000798 M
Answer: 0.000798

Question 40: Determine the equilibrium concentration of F₂.
[F₂] = 0.001202 M
Answer: 0.001202 M

Question 41: Determine the equilibrium concentration of HF.
[HF] = 0.001596 M
Answer: 0.001596 M

To know more about Equilibrium concentrations, refer

https://brainly.com/question/13414142

#SPJ11

The correct answer is that the test is done to measure the strength in ppm.

A sanitizer test kit is used to test the strength of the sanitizer.

A sanitizer is a highly viscus liquid which is used to keep the body surface clean from the micro organisms like the bacteria.

There is a proper test conducted to check the strength of the sanitizer.

It is usually done to check if the sanitizer is powerful enough to shield against such organisms.

In this test, the sanitizer is tested by its strength and the value is always in parts per million(ppm).

This test is done in various ways depending on the type of sanitizer.

For example, the strips of chlorine-based sanitizers are dipped into the sanitizing solution, then immediately remove and compare to the color chart. Then this color indicates a value and the value is the parts per million or ppm.

Therefore, the sanitizer testing kit tests the sanitizer based on the concentration of parts per million (ppm).

To learn more about sanitizer, refer: https://brainly.com/question/4296165

#SPJ4

Answer:

The water tastes sweet, and it usually appears to be cloudy or not clear.

Explanation:

If nothing dissolves into the water, then it should be clear.

Answer:You can tell if the sugar is still there by boiling off the water and leaving the sugar behind in the container. Sugar is a solid, and therefore cannot evaporate, so when the water reaches boiling point, it will evaporate at a quicker rate than before (water evaporates at any temperature in liquid form; just not enough to be noticeable) and leave the container to become water vapour

Explanation: If you stir a spoonful of sugar into hot water, the sugar will dissolve in the hot water. When sugar or another substance is dissolved in water, it disappears from view and forms a homogeneous mixture with the water, also called a solution.

The final pressure of the ideal gas that contained in a 2. 5 L container at a pressure of 4.0 atm = 4.33 atm.

To determine the final pressure of the ideal gas can be calculated using the Ideal Gas Law, which states that:

PV = nRT

Where:

P is the pressure

V is the volume (L)

n is the amount of gas in moles

R is the universal gas constant, and

T is the temperature in Kelvin.

The formula can be rearranged to solve for the final pressure (P₂):

P₁V₁/T₁ = P₂V₂/T₂

Since the volume and the amount of gas are constant, the equation can be simplified to:
P₁/T₁ = P₂/T₂
Hence,
P₂ = (P₁/T₁) × T₂
P₂ = (4.0 atm / 298.15 K) × 323.15 K
P₂ = 4.33 atm
Therefore, the final pressure of the ideal gas is 4.33 atm.

Learn more about ideal gas here: https://brainly.com/question/29849787

#SPJ11

a process that involves rearrangement of the molecular or ionic structure of a substance, as distinct from a change in physical form or a nuclear reaction.

Answer:

Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products

Explanation:

Compound that would have the highest boiling point is c) CH₃CH₂CH₂CH₂CH₂OH.

Pentan-1-ol (CH₃CH₂CH₂CH₂CH₂OH) is an alcohol with boiling point of 137⁰C.

While boiling, liquid pentan-1-ol is changed into gaseous pentan-1-ol.

Alcohols have higher boiling point than ethers, because it can form hydrogen bonds (see the picture below).

Between molecules of water there are hydrogen bonds, which must be brake so water can evaporate.

Hydrogen bond is an electrostatic attraction between two polar groups in which one group has hydrogen atom (H) and another group has highly electronegative atom such as nitrogen (like in this molecule), oxygen (O) or fluorine (F).

More about alcohol: brainly.com/question/9867663

#SPJ4

The heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol. To calculate the heat of reaction (ΔH) for the given reaction:

CCl₄(g) + H₂O(g) -> CHCl₃(g) + HCl(g)

You would need the standard enthalpies of formation for each compound involved in the reaction. The standard enthalpy of formation (ΔHf) is the enthalpy change when one mole of a compound is formed from its elements in their standard states.

Here are the standard enthalpies of formation for the compounds involved:

ΔHf[CCl₄(g)] = -135.5 kJ/mol

ΔHf[H₂O(g)] = -241.8 kJ/mol

ΔHf[CHCl₃(g)] = -104.7 kJ/mol

ΔHf[HCl(g)] = -92.3 kJ/mol

To calculate ΔH for the reaction, you need to sum up the enthalpies of formation of the products and subtract the sum of the enthalpies of formation of the reactants:

ΔH = ΣΔHf(products) - ΣΔHf(reactants)

ΔH = [ΔHf[CHCl₃(g)] + ΔHf[HCl(g)]] - [ΔHf[CCl₄(g)] + ΔHf[H₂O(g)]]

ΔH = [(-104.7 kJ/mol) + (-92.3 kJ/mol)] - [(-135.5 kJ/mol) + (-241.8 kJ/mol)]

ΔH = -196.9 kJ/mol - (-377.3 kJ/mol)

ΔH = 180.4 kJ/mol

Therefore, the heat of reaction (ΔH) for the given reaction is 180.4 kJ/mol.

To know more about enthalpy:

https://brainly.com/question/29145818

#SPJ4

The Solar weather affects the Earth's magnetosphere which is a threat to our magnetic protection and can cause turbulence.

The effect is like widening a hole—suddenly more energy and particles enter the magnetosphere. Auroras intensify, and geomagnetic storms become likely. For this reason, scientists pay careful attention to not only the strength but also the orientation of incoming magnetic fields from the sun. As the wind blows from the galaxy towards the earth it carries with it the Sun's magnetic field. It moves very fast, then smacks right into the Earth's magnetic field. The blow causes a shock to our magnetic protection, which can result in turbulence.

So we can conclude that: The Solar weather affects the Earth's magnetosphere which is a threat to our magnetic protection and can cause turbulence.

Learn more about Solar Weather here: https://brainly.com/question/22517566

#SPJ1

The mass of unreacted zinc = 13 g

The reaction equation is the chemical formula of reactants and products

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reactants and products

Reaction

\(\tt Zn+2HCl\Rightarrow ZnCl_2+H_2\)

mol ratio Zn : HCl = 1 : 2

\(\tt mol=V\times M\\\\mol=0.1~L(100~cm^3)\times 2~mol/L\\\\mol=0.2\)

\(\tt \dfrac{1}{2}\times 0.2=0.1~mol\)

\(\tt 0.1\times 65=6.5~g\)

\(\tt 19.5-6.5=\boxed{\bold{13~g}}\)

The structure of n‑methyl‑2‑pyrrolidone when it is heated with aqueous acid. product is given below

A polar solvent without an acidic proton is known as a polar aprotic solvent. These solvents don't include hydroxyl or amine groups. These solvents can act as proton acceptors, but unlike protic solvents, they do not act as proton donors in hydrogen bonding.

After being exposed to a strong aqueous acidic media and being heated, N-methyl-2-pyrrolidone opens up, forming a molecule with a carboxylic group at one end and a protonated nitrogen atom with a methyl group connected to it at the other.

Alcohol, water, hydrogen fluoride, formic acid, acetic acid, ammonia, methanol, ethanol, and other well-known substances are a few examples of polar protic solvents. Polar aprotic solvents, on the other hand, lack acidic protons and do not function as donors during hydrogen bonding.

to learn more about aprotic solvent go to -

https://brainly.com/question/20595633

#SPJ4

Answer:

B. 8.8 x 10⁻¹²

Explanation:

In aqueous solution, silver chromate (Ag₂CrO₄) dissociates into ions as follows:

Ag₂CrO₄(s) ⇄ 2 Ag⁺(aq) + CrO₄²⁻(aq)

                       2s               s

So, the expression of the Ksp of Ag₂CrO₄ is derived from the concentrations of the ions at equilibrium raised by the stoichiometric coefficients:

Ksp = [Ag⁺]²[CrO₄²⁻] = (2s²)s = (4s²)s = 4s³

Since s = [Ag⁺] = 1.3 x 10⁻⁴ M, we calculate the Ksp as follows:

Ksp = 4s³= 4(1.3 x 10⁻⁴)³ = 8.79 x 10⁻¹² M

Therefore, the correct option is B. 8.8 x 10⁻¹²

Answer:

they have shape.

they have volume.

they occupy space.

Answer:

m = 0.544 moles/kg

Explanation:

To do this, we need to use the expression for molality of a solution which is:

m = n / kg water

Where:

n: moles of solute

m: molality of solution

In this case, we have the moles of the solute, which is the C6H12O6 and the grams of water, and these grams would have to be turn into kg. Let's do this first:

kg of water = 150 g * 1 kg / 1000 g = 0.150 kg of water.

Now, replacing in the above expression of molality, we can calculate the molality of the solution:

m = 0.0816 / 0.150

Answer:

E:ammonium chloride

F:sodium hydroxide

G:ammonia

Answer:

A reversible reaction.

Answer:

C.) Avogadro's number represents the number of particles in one

mole.

Explanation:

Considering the definition of Avogadro's number, the correct answer is option C. Avogadro's number represents the number of particles in one  mole.

Avogadro's Number or Avogadro's Constant 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 represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression.

Avogadro's number applies to any substance.

Finally, the correct answer is option C. Avogadro's number represents the number of particles in one  mole.

Learn more about Avogadro's Number:

There are three subshells that are attached to the electron at the 4p level.

The term orbital refers to the region in space where there is a high probability of finding an electron. We know that in the atom, there is an arrangement of the electrons into orbitals. Each of the orbitals have a specific energy. The energy that is available to the orbital is dependent on the value of the principal quantum number n as it species the distance of the orbital from the nucleus.

In the case of the electron that has the designation of quantum numbers n = 4, l = 1, this electron is found in the 4p level and there are three subshells that are attached to the electron at the 4p level.

Learn more about orbital:https://brainly.com/question/18914648

#SPJ1

This is a balanced chemical reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) which results in the formation of sodium chloride (NaCl) and water (H2O).

In this reaction, the acid (HCl) and the base (NaOH) undergo a neutralization reaction where the hydrogen ion (H+) from the acid reacts with the hydroxide (OH-) from the base to form water (H2O). The remaining ions, Na+ from the base and Cl- from the acid, combine to form the salt, sodium chloride (NaCl).

It is important to note that the salt formed in this reaction contains only sodium and chlorine ions and not potassium. The hint provided in the question may be incorrect or misleading.
Hi! To write a balanced chemical reaction between an acid and sodium hydroxide, we first need to determine the acid that contains potassium in its formula. In this case, the acid is potassium hydrogen phthalate (KHP), with the chemical formula KHC₈H₄O₄.
KHC₈H₄O₄ (aq) + NaOH (aq) → H₂O (l) + NaKC₈H₄O₄ (aq)

To know more about hydrochloric acid visit:

https://brainly.com/question/14519330

#SPJ11

A balanced chemical reaction between an acid and sodium hydroxide, forming water and a sodium salt, can be represented by the following equation HCl + NaOH → NaCl + H2O

In this reaction, hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to produce sodium chloride (NaCl) and water (H2O). The reaction is a neutralization reaction, where the acid and base react to form a salt and water. The resulting salt, sodium chloride, contains both sodium and chlorine ions.

To know more about hydrochloric visit :

https://brainly.com/question/28727533

#SPJ11

Answer:

4 4 8 4 is the balanced equation

Answer:

J. Their momentum is conserved

Explanation:

According to the diagram, the best statement that describes what happens when two astronauts collides in space is that their momentum is conserved.

The momentum before collision is 320kgkm/hr and after collision it is 320kgm/s

 This collision is an inelastic collision;

    momentum before  = momentum after

              m₁v₁ + m₂v₂     =       v(m₁ + m₂)

m₁ = 80kg

v₁  = 4km/hr

m₂ = 80kg

v₂  = 0

v  = 2km/hr

 Insert the parameters;

              (80 x 4) + (80 x 0)    = 2(80 + 80)

                    320                      = 320

The name of the compound CH₃CHOOH is acetic acid.

The International Union of Pure and Applied Chemistry (IUPAC) names organic compounds according to chemistry rules.

To locate the longest carbon chain, there are various requirements to follow, such as finding the functional group.

Thus, the name of the compound CH₃CHOOH is acetic acid.

Learn more about IUPAC

https://brainly.com/question/16631447

#SPJ1

Answer:

light grey

Explanation:

cause it just got mixed

When mixed polycarboxylate cement is mixed correctly, it should have a syrup-like in consistency, which thickens as it sets.

One for the few dental fillings that exhibits real adherence to tooth structure is polycarboxylate cement. The liquid consists polyacrylic acid and a copolymer made from that acid, while the powder is predominantly zinc oxide. As filling substances, protective cavity lines, luting materials as crowns, bridges, inlays, and orthodontic appliances, as well as for root canal fillings and pulp capping, they are also employed in these procedures. When mixed polycarboxylate cement is mixed correctly, it should have a syrup-like in consistency, which thickens as it sets.

To know more about polycarboxylate cement, here:

https://brainly.com/question/30224951

#SPJ6

Hydrogen Lyman absorption transition. A hydrogen atom is excited from a state with n=1 to one with n=4. The energy that must be absorbed by the atom is 12.75 eV.

The energy that must be absorbed by the hydrogen atom to transition from a state with n=1 to one with n=4 can be calculated using the formula for the energy difference between two energy levels in the hydrogen atom:

E = -13.6 eV / n²

Where E is the energy in electron volts (eV) and n is the principal quantum number.

For the initial state with n=1, the energy is:

E₁ = -13.6 eV / (1²) = -13.6 eV

For the final state with n=4, the energy is:

E₄ = -13.6 eV / (4²) = -13.6 eV / 16 = -0.85 eV

To calculate the energy that must be absorbed by the atom, we subtract the energy of the initial state from the energy of the final state:

ΔE = E₄ - E₁ = -0.85 eV - (-13.6 eV) = -0.85 eV + 13.6 eV = 12.75 eV

Therefore, the energy that must be absorbed by the hydrogen atom to transition from a state with n=1 to one with n=4 is 12.75 eV.

To know more about Lyman absorption here

https://brainly.com/question/31856036

#SPJ4

Answer:

-40J

Explanation:

E= -w+q

E= -75J+30J

E= -40J

Answer:The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material. This material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.

Explanation:

Answer:

One of water's most significant properties is that it takes a lot of heat to it to make it get hot. Precisely, water has to absorb 4,184 Joules of heat (1 calorie) for the temperature of one kilogram of water to increase 1°C.

Explanation: