Predict the products of the reaction below. That is, complete the right-hand side of the chemical equation. Be sure your equation is balanced. HClO3 + NaOH -->

To keep burning, fires require oxygen. Carbon dioxide is used in certain fire extinguishers to put out flames. Explanation: Because magnesium is higher on the reactivity scale than carbon, it is more reactive and eliminates oxygen from carbon dioxide (to give carbon and magnesium oxide).

Answer:

There are 1.253*10²⁴ particles in 2.080 moles

Explanation:

Avogadro's number is called the number of particles that make up a substance (usually atoms or molecules) that can be found in the amount of one mole. In other words, Avogadro's number is the number of molecules that one mole of any substance contains.  Its value is 6.023 * 10²³ particles per mole.

So, you can apply a rule of three as follows: if 1 mole has 6.023*10²³ particles, then 2.080 moles, how many particles does it have?

\(amount of particles=\frac{2.080 moles*6.023*10^{23}particles }{1 mole}\)

amount of particles= 1.253*10²⁴ particles

There are 1.253*10²⁴ particles in 2.080 moles

Answer:

carbon dioxide + water+ energy+ soot+carbon monoxide

Answer:

The answer is a) \(C_{4} H_{16} O_{5}\)

Explanation:

The other chemical formulas' subscripts share a common factor, so they can be simplified to an empirical formula, however, the subscripts in  \(C_{4} H_{16} O_{5}\) cannot be simplified any further, because they do not share any more whole-number factors with each other.

Answer:

has very different properties from sodium and chlorine

Explanation:

We know that salt (chemical name: Sodium Chloride) is made from two elements, Sodium (Na) and Chlorine (Cl). But the properties of the compound of sodium and chlorine has completely different properties than those of its elements: Sodium and Chlorine.

Sodium is quite a low density but highly reactive silvery white metal and Chlorine is a highly reactive greenish yellow gas. While salt (NaCl) is a crystalline material, white in color, which readily dissolves in water and is used as a condiment to add flavor to food.

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The formula that represents a carbohydrate is C8h16C8.

Carbohydrates contain carbon, hydrogen, and oxygen and have a hydrogen-to-oxygen ratio of 2:1

What is a carbohydrate?

Carbohydrates are a kind of macronutrient found in many foods and beverages. Most carbohydrates occur naturally in plant-based foods,  like grains.

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Answer:

V1 = 3.09 L

Explanation:

Initial Pressure, P1 = 15.6 psi

Initial Volume, V1 = ?

Final Pressure, P2 = 25.43 psi

Final Volume, V2 = 1.895 L

The relationship between these quantities is given by boyles law;

V1P1 = V2P2

V1 = V2P2 / P1 = 1.895 * 25.43 / 15.6

V1 = 3.09 L

Answer:

For drinking.

For cleaning dishes.

For cooking.

for watering plants.

for washing clothes.

for bathing.

for generation of hydroelectricity.

for washing car.

making our dog bath

it helps in maintaining osmotic rate in humans

Explanation:

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Answer:

drinking,washing clothes ,washing dishes ,cooking,watering plants,cleaning ,for generation of hydroelectricity,washing vehicles,aquatic life,bathing

Explanation:

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Answer:

6

Explanation:

If there are 6 electrons and it has a balanced charge, there also must be six protons.

The paired t-test yields a different conclusion than the normal t-test because it accounts for the paired nature of the data, comparing the measurements taken at the top and bottom of the lake separately.

In this scenario, the paired t-test is appropriate because it analyzes the data as pairs, considering the chloride levels measured at the top and bottom of the lake for each sample. By comparing the differences within each pair, the paired t-test determines whether there is a significant difference between the chloride levels at the top and bottom of the lake.

Using the paired t-test, the differences between the paired observations are calculated, and the null hypothesis assumes that the mean difference is zero (no significant difference between the top and bottom chloride levels). The test then determines whether the observed differences are statistically significant at a chosen confidence level, in this case, 95%.

The normal t-test for differences in means, on the other hand, would treat the top and bottom chloride levels as separate and unrelated groups, disregarding their paired nature. By pooling the data and conducting a standard t-test, the analysis assumes that the two sets of measurements are independent, which may not be appropriate in this case. This can lead to a different conclusion compared to the paired t-test.

The different conclusion drawn from using the paired t-test compared to pooling the data and using the normal t-test is due to the consideration of the paired nature of the measurements. The paired t-test takes into account the potential correlation or connection between the measurements taken at the same location (top and bottom of the lake) and assesses the differences within each pair.

Pooling the data and using the normal t-test treats the measurements as independent, disregarding the pairing. This can result in a loss of valuable information and may lead to an inaccurate conclusion. The paired t-test is more appropriate when dealing with dependent or related measurements, ensuring a more accurate assessment of the differences between the top and bottom chloride levels.

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Answer:

The independent variable is the cause. Its value is independent of other variables in your study.

The dependent variable is the effect. Its value depends on changes in the independent variable.

Ex: The ice cube melts on the stove.

Dependent variable: Ice Cube

Independent variable: heat of stove

Answer:

In an experiment, the IV(independent variable) is a variable that is changed to see how it affects something else, and the DV (dependent variable)is a variable that is being measured/observed.

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The compound that has ionic bonds is KBr (potassium bromide). Therefore the correct option is Option E.

Ionic bonds develop when two atoms with significantly differing electronegativities create a bond in which one atom (the metal) contributes electrons to the other atom (the non-metal). Potassium (K) is a metal in KBr, while bromine (Br) is a nonmetal. The electronegativity of K is low, whereas that of Br is high. When K and Br bond, K contributes its valence electron to Br, resulting in an ionic bond.

The other chemicals listed, on the other hand, have covalent bonding. When atoms with similar electronegativities share electrons in order to produce a more stable electron configuration, covalent bonds occur.

a. H2O has covalent bonds;

b. O2 contains covalent bonds; and

c. Ne is a noble gas that does not create bonds.

d. CO contains covalent bonds.

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The number of mole of the gas present, given that a pressure of 2.85 atm was exerted at 25 °C is 0.0047 mole

We know that the ideal gas equation is given as:

PV = nRT

Where

Therefore, using the ideal gas equation, we can obtain the number of mole of the gas present as follow:

PV = nRT

2.85 × 0.04 = n × 0.0821 × 298

0.114 = n × 24.4658

Divide both sides by 24.4658

n = 0.114 / 24.4658

n = 0.0047 mole

Thus, the number of mole of the gas present is 0.0047 mole

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The corrected balanced chemical equation for the given reaction:
4C14H10O2 + 4NaBH4 → 4C14H14O2 + 4NaB + 2H2

To obtain the balanced chemical equation, follow these steps:

1. Identify the reactants and products:

4C14H10O2 + 4NaBH4 (reactants) → 4C14H14O2 + 2Na2 + B4 (products)

2. Note that there is an issue with the products side, so we'll correct it by replacing 2Na2 and B4 with 4NaB, which is a more likely product: 4C14H10O2 + 4NaBH4 → 4C14H14O2 + 4NaB

3. Count the number of atoms for each element on both sides of the equation.

4. Adjust the coefficients to make the number of atoms equal on both sides.

5. Double-check to make sure the equation is balanced.

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Oxygen and carbon dioxide are two substances that can diffuse directly from the blood through the plasma membrane of endothelial cells.

After exiting circulation, red blood cells transport oxygen, which is required for aerobic respiration, and this oxygen diffuses into the body's cells.

Carbon dioxide is produced as a byproduct of cellular respiration and diffuses into the bloodstream from the cells. In contrast to carbon dioxide and oxygen steroid hormones are too large to diffuse through the membrane instead they must be transferred into or out of the cell by a specific carrier molecule known as a transporter protein.

As a result, steroid hormones do not rapidly diffuse past the plasma membrane of endothelial cells and depart the body.

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When a salt dissolves, it is not safe to assume that it completely dissociates because some salts may form complexes and not completely dissociate into ions. An example of this is when silver nitrate is dissolved in water.

Dissociation is the separation of a molecule into smaller particles or ions. The ions have an electric charge and may be positively or negatively charged.

The process of dissolving a salt in water involves dissociation. When salt is dissolved in water, it splits into its constituent ions.

For instance, sodium chloride dissolves in water to produce sodium ions and chloride ions. These ions are electrically charged and are free to move in the solution.

A complex is a type of molecule or ion that consists of a central atom or ion that is bonded to other ions or molecules called ligands.

Complexes usually form when a metal ion binds with ligands. The formation of a complex often involves the donation of an electron pair from a ligand to the metal ion.

The central atom or ion is usually a metal ion with one or more vacant orbitals.

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Answer:

C) are a result of hydrogen bonding

Explanation:

Cohesion, surface tension, and adhesion are the properties of water molecules that are a result of hydrogen bonding.

Answer:

1: At temperatures below 542.55 K

2: At temperatures above 660 K

Explanation:

Hello there!

In this case, according to the thermodynamic definition of the Gibbs free energy, it is possible to write the following expression:

\(\Delta G=\Delta H-T\Delta S\)

Whereas ΔG=0 for the spontaneous transition. In such a way, we proceed as follows:

1:

\(0=\Delta H-T\Delta S\\\\T=\frac{-102kJ/mol}{-0.188kJ/mol-K} \\\\T=542.55K\)

It means that at temperatures lower than 542.55 K the reaction will be spontaneous.

2:

\(0=\Delta H-T\Delta S\\\\T=\frac{132kJ/mol}{0.200kJ/mol-K} \\\\T=660K\)

It means that at temperatures higher than 660 K the reaction will be spontaneous.

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Answer:

malleable

Explanation:

The image represent in malleable property of metal.

The image possibly represents the photoelectric effect of a metal, which is when it emits electrons after being exposed to electromagnetic radiation. Metals are also characterized by physical properties such as conductivity, malleability, metallic luster, and metallic bonding.

Based on your question, the image possibly represents the photoelectric effect, a key property of metals. This phenomenon occurs when a metal surface exposed to electromagnetic waves of a certain frequency absorbs radiation and emits electrons. These emitted electrons are called photoelectrons. Metals can also exhibit free electron model behavior, where electrons freely roam within the metal structure.

Metals possess unique physical properties like conductivity, malleability, and metallic luster. Malleability refers to the metal's ability to deform without breaking, while conductivity refers to the metal's ability to transfer heat or electricity. A metallic luster gives metals their characteristic shiny appearance.

Finally, metals are also known for their metallic bonding—a unique force that holds together the atoms within a metallic solid. Metallic bonding gives rise to many useful and varied bulk properties of metals.

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Answer: The mass of \(H_2\) produced is 0.153 g

Explanation:

The number of moles is defined as the ratio of the mass of a substance to its molar mass. The equation used is:

\(\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}\) ......(1)

Given mass of zinc = 5.0 g

Molar mass of zinc = 65.38 g/mol

Putting values in equation 1, we get:

\(\text{Moles of zinc}=\frac{5.0g}{65.38g/mol}=0.0765mol\)

Given mass of HCl = 10.0 g

Molar mass of HCl = 36.46 g/mol

Putting values in equation 1, we get:

\(\text{Moles of HCl}=\frac{10.0g}{36.46g/mol}=0.274mol\)

The given chemical equation follows:

\(Zn+2HCl\rightarrow ZnCl_2+H_2\)

By stoichiometry of the reaction:

If 1 mole of zinc reacts with 2 moles of HCl

So, 0.0765 moles of zinc will react with = \(\frac{2}{1}\times 0.0765=0.153mol\) of HCl

As the given amount of HCl is more than the required amount. Thus, it is present in excess and is considered as an excess reagent.

Thus, zinc is considered a limiting reagent because it limits the formation of the product.

By the stoichiometry of the reaction:

If 1 mole of zinc produces 1 mole of \(H_2\)

So, 0.0765 moles of zinc will produce = \(\frac{1}{1}\times 0.0765=0.0765mol\) of \(H_2\)

We know, molar mass of \(H_2\) = 2 g/mol

Putting values in above equation, we get:

\(\text{Mass of }H_2=(0.0765mol\times 2g/mol)=0.153g\)

Hence, the mass of \(H_2\) produced is 0.153 g

C8 columns refer to chromatography columns that contain a stationary phase consisting of hydrocarbon chains with eight carbon atoms. c8 columns means none of the given options. The correct answer is (d) None of the above.

C8 columns refer to chromatography columns that contain a stationary phase consisting of hydrocarbon chains with eight carbon atoms. These carbon chains are typically covalently bonded to a solid support material.

The C8 designation represents the length and composition of the hydrocarbon chains in the stationary phase.

These columns are commonly used in chromatography techniques, such as reversed-phase liquid chromatography, where nonpolar compounds are separated based on their interactions with the hydrophobic stationary phase.

The C8 stationary phase provides moderate retention for analytes with different polarities, allowing for effective separation.

The statement about ionic bonding or the presence of a phenyl group is not applicable to C8 columns.

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Answer:

Explanation:

SANA PO MAKATULONG PO YUNG SAGOT NA BINIGAY KO

The relative ability of a bonded atom to attract shared electron pairs is called its electronegativity. This ability increases as the size of the atom decreases because for a smaller atom the shared electrons will be closer to the nucleus.

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted to two nuclei.

Electronegativity is defined as the ability of an atom within a molecule to attract electrons to itself. The concept of an elemental electronegativity scale was proposed by Pauling.

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B

The sodium hydroxide (NaOH) solution is a basic solution, so the pH of that solution should be close to 14

then when adding hydrochloric acid (HCl) we start to neutralice the solution, meaning the pH must sift slowly to lower pH.

Assuming both solutions have similar concentration the pH shall shift form basic (above 7) to acid pH (below 7). Until now both B and D images agreed with the explanation given. To chose between them we need to remember that HCl is a very strong acid, which means that in solution will get to very acid solutions (very low pH values) which leaves only B as possible answer

Answer:

O b

Explanation:

high compressibility is not the property of metal.

The total charge on the left side is -10 and on the right side is 0. To balance the charges, we need to add 10 electrons to the right side. So, we can say that 10 electrons are transferred in the given reaction.

In the given reaction, 2103 + 10Ag+ + 12H* —10Ag+ + I₂ + 6H₂O, the oxidation state of iodine changes from (-1) to (0).In order to determine the number of electrons transferred in the given reaction, we need to find the oxidation state of iodine in the reactants and products.

Let's solve it step by step;2103:

Oxidation state of Iodine (I₂) = -1 × 2 = -2

Oxidation state of Ag+ = +1 × 10 = +10

Oxidation state of H = +1 × 12 = +12

Total charge on left side = -2 + 10 + 12 = +20

On the right side, we have;

10Ag+: Oxidation state of Ag+ = +1 × 10 = +10I₂:

Oxidation state of Iodine (I₂) = 0H₂O:

Oxidation state of Hydrogen (H) = +1 × 12 = +12

Oxidation state of Oxygen (O) = -2 × 6 = -12

Total charge on the right side = +10 + 12 + (-12) = +10 Therefore, the net charge of the reaction is balanced, and we can calculate the electrons transferred by counting the change in oxidation states. Since the oxidation state of iodine changes from (-1) to (0), there is a gain of 1 electron. Hence, 1 electron is transferred in the given reaction.

3Hg + 2CrO4²-+ 5H₂O—>2Cr(OH)3 + 3HgO

In the given reaction, the oxidation state of chromium changes from (+6) to (+3).

The electrons transferred can be calculated by finding the difference in oxidation state of chromium in reactants and products. We have: CrO4²- :

Oxidation state of Chromium (Cr) = +6

Oxidation state of Oxygen (O) = -2 × 4 = -8

Total charge = +6 + (-8 × 2) = -10

Hg: Oxidation state of Mercury (Hg) = +2

Oxidation state of Oxygen (O) = -2 × 1 = -2

Total charge = +2 + (-2) = 0

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Glucose (a monosaccharide) has the molecular formula c6h12o6. The number of carbon atoms are in each glucose molecule is 6 carbon atoms.

Glucose is an organic compound that forms carbohydrates with monosaccharide types and is the simplest type of carbohydrate. Glucose is a form of carbohydrate metabolism which functions as the main energy source which is controlled by insulin.

The chemical formula of glucose is  C6H12O6 which means that glucose is composed of 6 carbon atoms, 12 hydrogen atoms and 6 oxygen atoms. Glucose is also an aldehyde which contains -CHO groups and forms a pyranose ring which is in equilibrium with a more reactive form.

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B.

Explanation:

Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves. This can kill, damage, or change the cells and make you sick.

In the context of atomic orbital (AO) wavefunctions, the terms "radial node" and "nodal plane" refer to different aspects of the wavefunction's behavior.

A radial node is a region in the AO wavefunction where the probability of finding an electron is zero along the radial direction. In other words, it represents a spherical shell where the electron is unlikely to be found. The number of radial nodes is determined by the principal quantum number (n) of the orbital. For example, the 2s orbital has one radial node, while the 2p orbital has no radial nodes.

On the other hand, a nodal plane is a flat plane within the AO wavefunction where the probability of finding an electron is zero along a particular direction. It represents a surface that divides the orbital into two regions of opposite phases. The number of nodal planes is determined by the angular quantum numbers (l and m) of the orbital. For example, the 2s orbital has no nodal planes, while the 2p orbital has one nodal plane (the xz or yz plane).

Radial nodes arise from the radial part of the wavefunction because they depend on the distance from the nucleus. The radial part determines the distribution of the electron density as a function of distance, and the nodes correspond to regions where the density drops to zero.

On the other hand, nodal planes arise from the angular part of the wavefunction because they depend on the orientation and shape of the orbital. The angular part describes the angular distribution of the electron density around the nucleus, and the nodal planes correspond to regions where the phase of the wavefunction changes sign.

In summary, radial nodes are related to the distance from the nucleus and arise from the radial part of the wavefunction, while nodal planes are related to the orientation and shape of the orbital and arise from the angular part of the wavefunction. The 2s orbital has one radial node and no nodal planes, while the 2p orbital has no radial nodes and one nodal plane.

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Answer:

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo chemical transformation or physical transport.

Explanation: