Which multimedia does this ad from the Centers for Disease Control’s advertising campaign for the flu vaccine include? (more than one)


A.) animation

B.) image

C.) text

D.) graph

E.) chart

(NH4)3PO4 is insoluble in water. The correct option is D

According to their chemical formula and ionic charges, ionic compounds generally follow a set of solubility laws that define their solubility patterns in water. These guidelines aid in determining whether an ionic compound will dissolve in water or not as well as if it will precipitate when combined with other ionic compounds.

Therefore, (NH4)3PO4 is the compound that is expected to be insoluble in water based on the solubility rules.

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Answer:

D. adhesion and cohesion

The volume of hydrogen gas required to produce 25.0 grams of water at STP is 31.2 liters.

The balanced chemical equation for the reaction between hydrogen gas and oxygen gas to produce water is:

2H2(g) + O2(g) → 2H2O(l)

From the equation, we can see that 2 moles of hydrogen gas are required to produce 2 moles of water. The molar mass of water is 18 g/mol, so 2 moles of water has a mass of 36 g.

Therefore, to produce 25.0 grams of water, we need to use:

(25.0 g / 36.0 g/mol) * 2 mol H2/mol H2O = 1.39 mol of H2

At STP (standard temperature and pressure), 1 mole of gas occupies 22.4 L of volume.

So, 1.39 moles of H2 will occupy:

1.39 mol x 22.4 L/mol = 31.2 L

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Answer:

2.63*10^23

Explanation:

1 mol rhodium = 102.91

44.8g/1 mol * 1 mol/ 102.91mol * 6.022*10^23/1 mol =

2.63*10^23

The formula on the left, which consists of two sodium ions and one sulfide ion, is the equation for the dissociation of sodium sulfide in water. The ions split from one another as the chemical dissociates in water. On the right side of the equation, there are 2 Na+ ions and 1 S2- ion.

Na2S(s) ---> 2Na+(aq)  +  S2- (aq)

Being a strong acid, hydrogen bromide, or HBr, has the equation HBr(aq) -> H+(aq) + Br- for its dissociation (aq). The equation for hydrogen flouride, or HF, is HF(aq) -> H+(aq) + F- because it creates a weak acid (aq). Weak acids create equilibrium, which is why the two-way arrow is there!

The hydrogen bromide ionizes and dissolves in water as follows:

H3O+(aq) + Br- = HBr(g) + H2O(l) (aq)

A soluble ionic molecule called lead(II) nitrate, Pb(NO3)2, completely dissociates in water to produce lead(II) cations, Pb2+, and nitrate anions, NO3. Hydrogen sulfide, H2S, is bubbled through the solution in order to precipitate the lead(II) cations.

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The kinetic energy of a 23.2-g object moving at a speed of 98.7 m/s is  113.30 J. Option D

The kinetic energy of an object can be calculated using the formula: KE = (1/2)mv^2, where KE is the kinetic energy, m is the mass of the object, and v is the velocity or speed of the object.

Given:

Mass (m) = 23.2 g = 0.0232 kg

Speed (v) = 98.7 m/s

Substituting these values into the formula, we can calculate the kinetic energy:

KE = (1/2)(0.0232 kg)(98.7 m/s)^2

KE = (1/2)(0.0232 kg)(9756.09 m^2/s^2)

KE ≈ 113.30 J

Therefore, the kinetic energy of a 23.2-g object moving at a speed of 98.7 m/s is approximately 113.30 J.

It's worth noting that the question is repeated twice, but the answer remains the same. The kinetic energy of the object is determined by its mass and speed, and both calculations yield the same result. Option D

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Answer:

2.46 × 10²⁵ atoms H

Explanation:

Avagadro's Number: 6.022 × 10²³

Step 1: Find formulas

Hydrogen - H

Ammonium Sulfide - (NH₄)₂S

Step 2: Use Dimensional Analysis

\(5.10 \hspace{3} mol \hspace{3} (NH_4)_2S(\frac{8 \hspace{3} mol \hspace{3} H}{1 \hspace{3} mol \hspace{3} (NH_4)_2S})(\frac{6.02(10)^{23} \hspace{3} atoms \hspace{3} H}{1 \hspace{3} mol \hspace{3} H} )\) =

Step 3: Simplify

We have 3 sig figs.

2.45616 × 10²⁵ atoms H ≈ 2.46 × 10²⁵ atoms H

Answer: True because if you leave it outside and it rains on the bike it will cause rust. Keep it in the garage or something. :) I have a bike btw.

Explanation:

The best way to prevent rusting is to store your bike safely away when it isn't being used and apply a rust-proofing lubricant to protect it when you are riding it – enjoying those wet and wild rides guilt-free!

so true

The volume of O₂ produced when 8.52 g of Na₂O₂ is added to excess water is approximately 1.17 liters at STP.

When it comes to the ideal gas law, the underlying assumption is that the gas is in a state of thermodynamic equilibrium. This means that its molecules are not interacting with each other except through perfectly elastic collisions.

Equation:

We can use stoichiometry to determine the volume of oxygen gas produced from the reaction of 8.52 g of Na₂O₂.

First, we need to convert the mass of Na₂O₂ to moles using its molar mass:

8.52 g Na₂O₂ × (1 mol Na₂O₂ / 77.98 g Na₂O₂) = 0.1093 mol Na₂O₂

According to the balanced chemical equation, 1 mole of Na₂O₂ produces 1/2 mole of O₂:

2 Na₂O₂ + 2 H₂O → 4 NaOH + O₂

1 mol Na₂O₂ produces 1/2 mol O₂

So, the number of moles of O₂ produced is:

0.1093 mol Na₂O₂ × (1/2 mol O₂ / 1 mol Na₂O₂) = 0.05465 mol O₂

Finally, we can use the ideal gas law to determine the volume of O₂ produced at standard temperature and pressure (STP), which is defined as 0°C (273 K) and 1 atmosphere (1 atm) of pressure:

PV = nRT

At STP, the pressure and temperature are known, so we can rearrange the equation to solve for V:

V = nRT / P

Plugging the values, we get:

V = (0.05465 mol) × (0.08206 L atm mol⁻¹ K⁻¹) × (273 K) / (1 atm)

V ≈ 1.17 L

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The above exercise is designed to help the students understand how living things and non-living things are classified. See the solution for this below.

The items are classified as follows:

Food:

Sports Items:

Furniture:

It is to be noted that The science of living beings or even anything requires classification. It is necessary for understanding the many types of organisms and things. It aids in the identification of different species. It is beneficial to understand the genesis and evolution of organisms.

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Full Question:

In the exercises that follow, arrange the items listed into different groups. Give each group a title indicating what the members of that group have in common.

Steak, football, sausage, chair, table, bacon, sofa, baseball bat, cleats, ham, bookcase

Answer:B.

Explanation: I trust me on this

Explanation:

the definition of genuine:

genuinly means honestly or truley

The value in mol/Kg would be 12000 g/mol from the calculation.

When converting from mol/kg (moles per kilogram) to g/mol (grams per mole), it's important to take the substance's molar mass into account.

Consider a material that has a 12 mol/kg concentration and a molar mass of M g/mol.

You can perform the following conversion from mol/kg to g/mol:

Find out how many grams there are in a kilogram (1000 grams). This conversion factor is dependent on how the kilogram is defined.

To get the concentration in g/mol, multiply the concentration in mol/kg by the molar mass conversion factor.

Consequently, this conversion would be:

Concentration in mol/kg * 1000 g/kg is 12 mol/kg * 1000 g/kg, or 12000 g/mol.

In light of this, 12 mol/kg is equal to 12000 g/mol.

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The isoelectric point (pI) is the pH at which an amino acid or protein.

Functional groups of amino acids in enzymes present have the ability to readily ionize. other amino acids which have ionizable side chains. These include arginine, aspartic acid, cysteine, glutamic acid, histidine, lysine and tyrosine.

There are basically four different classes of amino acids determined by different side chains: (1) non-polar and neutral, (2) polar and neutral, (3) acidic and polar, (4) basic and polar. Principles of Polarity: The greater the electronegativity difference between atoms in a bond, the more polar the bond.

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The average height of the poodle in your kennel is 1.46.

The term average has to do with the mean value of something now we have been told that one group, with contains 24 dogs, averages 20.5 inches, another group that contains 12 dogs, averages 32.1 inches.

The first group has  24 dogs and the second group has 12 dogs the total number of dogs is 24 + 12 = 36 dogs. The total height of the dogs is 20.5 inches + 32.1 inches = 52.6 inches

The average height of the poodle in your kennel = 52.6 inches/36 dogs

= 1.46

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The work performed on an electron by the field is  0.18 × 10⁻¹⁸J.

An electric field that has a constant field strength value throughout is said to be uniform.

The product of the electron charge q and the electric field intensity determines the force that the electric field applies to the electron.

F: qE = ( 1.6 × 10⁻¹⁹) (375 N/ C)  = 6 × 10⁻¹⁷ N

The electron moves by the following distance when this force is at work: x = 3.10 cm = 0.031 m

Additionally, the product of the force's magnitude and the electron's displacement represents the work that the electric field does on the electron. Since the force's direction matches the electron's displacement, the sign must be interpreted as positive, hence

W = FΔx = ( 6 × 10⁻¹⁷ N) (0.031 m ) = 0.18 × 10⁻¹⁸ J

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Intermolecular force connects atoms in different molecules. Intermolecular forces determine physical qualities including boiling temperature, melting point, viscosity, and surface tension.

London dispersion, dipole-dipole, and hydrogen bonding are intermolecular forces. London dispersion forces, caused by electron movement-induced dipoles, are the smallest intermolecular interactions between all atoms and molecules.

Polar molecules have greater dipole-dipole interactions than London dispersion forces. Hydrogen bonding is a specific dipole-dipole interaction between a hydrogen atom bound to an electronegative atom (N, O, or F) in one molecule and an electronegative atom in another molecule.

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Transformation in chemistry is scientifically used to explain the process of changing one compound to another in a chemical reaction.

The word "transformation" has a very special significance in chemistry. We know that in English, to transform would simply imply to change from one form to another. This is not quite far from its meaning in the parlance of chemistry.

The word transformation is normally applied in the area of chemical reactions especially as it has to do with reaction with in organic chemistry. It has to do with the change from one molecule to another and this is of great importance in the discussion of synthetic chemistry.

As such, the word transformation in chemistry is scientifically used to explain the process of changing one compound to another in a chemical reaction.

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Answer:

A. The increase in size of the battery results in a smaller internal resistance and hence, a larger current delivery.

B. Zinc serves as the anode

Explanation:

A. The current that a battery can deliver is affected by the internal resistance of the battery.

The internal resistance resistance, r, is the resistance to flow of current within the battery. The smaller the internal resistance for a given emf, the more current and the more power the source can supply.

The relationship between current, I, emf, E, the external load ,R, and internal resistance is given by the equation:

I = E / (R + r)

The bigger the size of a battery, the smaller its internal resistance and thus, the larger the current the battery can deliver.

B. In a battery, the cathode is reduced by accepting electrons from the anode, while the anode is oxidized to zinc ion by giving up its electrons to the cathode.

From the equation of the reaction, metallic zinc is oxidized by giving up two electron to the cathode.

Zn(s) ----> Zn2+ + 2e-

Therefore, metallic zinc serves as the anode.

Answer:

268 nm

Explanation:

The equation needed to find wavelength is:

E = hc / w

In this equation,

-----> E = energy (J)

-----> h = Planck's Constant (6.626 x 10⁻³⁴ J*s)

-----> c = speed of light (3.0 x 10⁸ m/s)

-----> w = wavelength (m)

To find the wavelength, you can plug the given values into the equation and simplify. Then, you can convert meters to nanometers.

E = hc / w

7.41 x 10⁻¹⁹ J = (6.626 x 10⁻³⁴ J*s)(3.0 x 10⁸ m/s) / w     <---- Input given values

7.41 x 10⁻¹⁹ J = 1.9878 x 10⁻²⁵ / w                                   <----- Simplify

(7.41 x 10⁻¹⁹ J) x w = 1.9878 x 10⁻²⁵                                <----- Rearrange

w = 2.68 x 10⁻⁷ m                                                          <----- Simplify

 2.68 x 10⁻⁷ m           1 x 10⁹ nm
----------------------  x  ----------------------  = 268 nm
                                         1 m

The number of molecules in 1 drop of the water is 1.67×10²¹ molecules

We'll begin by calculating the mass of the water. This can be obtained as follow:

•Volume = 50 μL = 50×10¯⁶ L = 50×10¯⁶ × 10³ = 0.05 mL

•Density = 1 g/mL

•Mass =?

Mass = Density × Volume

Mass of water = 1 × 0.05

Mass of water = 0.05 g

1 mole of water = 6.02×10²³ molecules

1 mole of water = 18 g

Thus,

18 g of water = 6.02×10²³ molecules

Therefore,

0.05 g of water = (0.05 × 6.02×10²³) / 18

0.05 g of water = 1.67×10²¹ molecules

Thus, the number of molecules in 1 drop of the water is 1.67×10²¹ molecules

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Answer:

chemical reaction

Explanation:

Answer:

Making soap can be considered a chemical reaction.

Explanation:

In the process of making soap, a reaction takes place between a fat or oil and an alkali, such as lye (sodium hydroxide), which results in the formation of soap molecules and glycerol. This reaction is known as saponification. The change in the composition of the reactants to form a new substance is a chemical change, not a physical change or a phase change.

Answer:

A. The sun's rays strike the water more directly near the equator.

Explanation:

I pass the test

Answer:

15.5343

Explanation:

Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:

Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)

The molar mass of MgCl₂ is 95.21 g/mol.

First, we need to calculate the number of moles of MgCl₂ formed:

Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂

Moles of MgCl₂ = 34.52 g / 95.21 g/mol

Moles of MgCl₂ = 0.363 mol

According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:

Moles of HCl = 2 * Moles of MgCl₂

Moles of HCl = 2 * 0.363 mol

Moles of HCl = 0.726 mol

To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.

Number of molecules of HCl = Moles of HCl * Avogadro's number

Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol

Number of molecules of HCl = 4.37 x 10^23 molecules

Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.

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Answer:

H₂²⁺(aq) + O₂²⁻(aq) + SO₃²⁻(aq) → SO²⁻₄(aq) + H₂O(l)

Explanation:

H₂²⁺(aq) + O₂²⁻(aq) + Mg²⁺(aq) + SO₃²⁻(aq) → Mg²⁺(aq) + SO²⁻₄(aq) + H₂O(l)

A careful observation of the equation above, shows that the equation is already balanced.

To obtain the net ionic equation, we simply cancel Mg²⁺ from both side of the equation as shown below:

H₂²⁺(aq) + O₂²⁻(aq) + SO₃²⁻(aq) → SO²⁻₄(aq) + H₂O(l)