How many moles of solute particles are produced by adding one mole of each of the following to water? Sodium nitrate
Glucose
Aluminum chloride
Potassium iodide

Answer:

Common properties of hydrocarbons are the facts that they produce steam, carbon dioxide and heat during combustion and that oxygen is required for combustion to take place. The simplest hydrocarbon, methane, burns as follows: CH4 + 2 O2 → 2 H2O + CO2 + energy.

Explanation:

The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

Answer:

Explanation:

Mass m1 = 44.8776

The statement that is a characteristic of water is strong cohesion. Details about characteristics of water can be found below.

Water is a unique molecule which is attributed to its unique characteristics or features.

Water is made up of two hydrogen atoms and one oxygen atom that are chemically bonded to one another.

Some of the characteristics of water are as follows:

Therefore, the statement that is a characteristic of water is strong cohesion.

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VSEPR (Valence Shell Electron Pair Repulsion) theory is a model used to predict the geometry of a molecule based on the number of electron pairs surrounding its central atom.

The central atom is the focus of the VSEPR theory, as the number and arrangement of electron pairs will determine the shape of the molecule. The electron pairs, both lone pairs and bonding pairs, repel each other, causing them to adopt an arrangement that maximizes the distance between them. This arrangement determines the overall shape of the molecule, and is based on the number of electron pairs around the central atom.

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Answer:

Chromatography Elephants Toothpaste

Colour Changing Potions

Explanation: or Easy Vinegar and Baking Soda Volcano

Answer:

All waves of the electromagnetic spectrum have a speed of 3 × 10⁸ ms⁻¹

The pH of the solution is 9.54.

(a) To calculate the pH of the solution containing sodium formate and formic acid, we need to first write the equation for the dissociation of formic acid:

HCHO2 + H2O ⇌ H3O+ + CHO2−

The equilibrium constant expression for this reaction is:

Ka = [H3O+][CHO2−]/[HCHO2]

We can use an ICE table to find the equilibrium concentrations:

HCHO2 + H2O ⇌ H3O+ + CHO2−

I 0.300 M 0 0

C -x +x +x

E 0.300-x x x

Substituting the equilibrium concentrations into the equilibrium constant expression gives:

1.8x10^-4 = (x^2)/(0.300-x)

Solving for x gives: x = 0.0074 M

The pH of the solution is:

pH = -log[H3O+]

= -log(0.0074)

= 2.13

Therefore, the pH of the solution is 2.13.

(b) To calculate the pH of the solution containing pyridine and pyridinium chloride, we need to first write the equation for the dissociation of pyridine:

C5H5N + H2O ⇌ C5H5NH+ + OH−

The equilibrium constant expression for this reaction is:

Kb = [C5H5NH+][OH−]/[C5H5N]

We can use an ICE table to find the equilibrium concentrations:

C5H5N + H2O ⇌ C5H5NH+ + OH−

I 0.0720 M 0 0

C -x +x +x

E 0.0720-x x x

Substituting the equilibrium concentrations into the equilibrium constant expression gives:

1.7x10^-9 = (x^2)/(0.0720-x)

Solving for x gives: x = 3.5x10^-5 M

The pOH of the solution is:

pOH = -log[OH^-]

= -log(3.5x10^-5)

= 4.46

The pH of the solution is:

pH = 14 - pOH

= 14 - 4.46

= 9.54

Therefore, the pH of the solution is 9.54.

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Answer:

percentage by mass of each element in a compound.

Explanation:

Answer:

Water, H2O, is a pure substance, a compound made of hydrogen and oxygen. Although water is the most abundant substance on earth, it is rarely found naturally in its pure form. Most of the time, pure water has to be created. Pure water is called distilled water or deionized water.

An element that can exhibit more than one structural form in the same state is called an allotrope.

Yes, there are industrial and technological applications that utilize the property of elements that can exhibit more than one structural form in the same state. For example, carbon exists in multiple structural forms such as graphite and diamond. In industry, graphite is used in lubricants, batteries, and as a refractory material, while diamond is used for cutting and polishing due to its extreme hardness. Additionally, this property of an element is also utilized in technologies such as semiconductors and in the production of advanced materials such as aerospace composites.

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Answer:

true

Explanation:

energy is the energy to do things

and there is a force in our bodies wich is giving out energy through a distance

Answer:Material X would be classified as a crystalline solid because atoms are in a highly ordered three-dimensional arrangement.

Explanation: it makes sense I'm sorry if its wrong

In the Circuit Builder Gizmo, the substances that were demonstrated to be conductors include copper, silver, brass, iron, and lead.

The ability of a substance to carry electricity is referred to as conductivity. While plastics and wood are poor conductors of electricity, some materials, such as metals, are excellent conductors. We may build and test electrical circuits using a variety of materials using the Circuit Builder Gizmo. We may create a circuit by connecting a battery, a switch, and a light bulb. Then, by using various materials as conductors in the circuit, we can test the conductivity of those materials. By inserting a sample of each substance as a conductor in the circuit and checking to see if the light bulb illuminates, we can test the conductivity of each item listed in the question using the Circuit Builder Gizmo. If the light bulb illuminates, the substance is a good conductor of electricity; if the light bulb remains dark, the substance is a insulator.

Due to their high electrical conductivity and low resistance, copper and silver are both effective conductors of electricity. Brass, a copper and zinc alloy, has a good conductivity as well. Iron and lead are not as effective conductors of electricity as copper and silver, but they can still do so. This is so that electrons can pass through them due to their metallic characteristics.

Therefore, the substances that were demonstrated to be conductors include copper, silver, brass, iron, and lead.

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The freezing temperature of a solution of 115.0 g of sucrose, c12h22o11, in 350.0 g of water is -1.8 C.

The freezing point of the solvent in a solution changes as the concentration of the solute in the solution changes (but it does not depend on the identity of either the solvent or the solute(s) particles (kind, size or charge) in the solution).The freezing point depression ∆T = KF·m where KF is the molal freezing point depression constant and m is the molality of the solute. Rearrangement gives: mol solute = (m) x (kg solvent) where kg of solvent is the mass of the solvent (lauric acid) in the mixture. This gives the moles of the solute.The normal freezing point is the temperature at which a substance melts (or freezes) at one atmosphere (760 torr = 760 mm Hg = 14.7 psi = 101.3 kPa) of pressure.

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An ionic salt, is more soluble in water

Polar substances  are generally more soluble in water compared to nonpolar substances. This is because water is a polar solvent, meaning that it has a partial positive charge on one end and a partial negative charge on the other end due to the asymmetric arrangement of its atoms.

Polar substances also have a partial positive and partial negative charge on different parts of their molecules, which allows them to interact with water molecules through electrostatic interactions,

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Answer:

Two factors that contribute to the efficiency of a chromatographic separation are the amount of sample being separated and the separation time. A larger sample size or a longer separation time will generally result in a more efficient separation. Other factors that can impact the efficiency of a chromatographic separation include the nature of the sample, the type of chromatographic technique being used, and the characteristics of the separation column.

Answer:

37.9%

Explanation:

x/100 × 16.9 = 10.5

16.9x/100=10.5

16.9x=1050. (÷ b.s by 16.9)

x=62.1%

100%-62.1%=37.9%

Answer:

this is not and reaction of acid and base.(CaOCL2)

Explanation:

Ca2, Cl, are base and O is a neutral.

so how can that be a acid and base reaction

Answer:

power is work/time so 10,000j/5s=2000J/s

The mass of the compound that contains 185.0 g of hydrogen is 2384.02 g

The following data were obtained from the question:

Percentage of carbon = 92.24%

Percentage of hydrogen = 7.76%

Mass of hydrogen = 185.0 g

Mass of compound =?

The mass of the compound can be obtained as illustrated below:

Percentage of hydrogen = (mass of hydrogen / mass of compound) × 100

7.76% = 185 / mass of compound

0.0776 = 185 / mass of compound

Cross multiply

0.0776 × mass of compound = 185

Divide both sides by 0.0776

Mass of compound = 185 / 0.0776

Mass of compound = 2384.02 g

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Answer:

0.0698

Explanation:

k = Ae^-Ea/RT

A= frequency factor = 8.0 x 10^11 /s

Ea = activation energy= 250 * 10^3J/mol

R= 8.314 J/mol/K

T = 1000K

Substituting values;

k = 8.0 x 10^11 * e^-250 * 10^3/ 8.314 * 1000

k = 0.0698

The chemical formula for francium phosphide is FrP.

A chemical formula is described as a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

There are three main types of chemical formulas which include :

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By comparing the voltage values of the half-cell reaction of Sn with various metals, we can determine the relative reactivity of these metals. Here are the interactions listed along with their respective voltages:

- Sn + Ag: -1.018V

- Sn + Cu: -0.603V

- Sn + Fe: -0.082V

- Sn + unknown metal: 0.253V

Based on the given information, we can observe the following:

1. Sn + Ag: -1.018V

The voltage of -1.018V indicates that the reaction of Sn with Ag is spontaneous, with Sn acting as the reducing agent and Ag as the oxidizing agent. This suggests that Sn has a higher reactivity than Ag.

2. Sn + Cu: -0.603V

The voltage of -0.603V suggests that the reaction of Sn with Cu is also spontaneous, with Sn acting as the reducing agent and Cu as the oxidizing agent. This implies that Sn has a higher reactivity than Cu.

3. Sn + Fe: -0.082V

  The voltage of -0.082V indicates that the reaction of Sn with Fe is spontaneous, with Sn acting as the reducing agent and Fe as the oxidizing agent. This suggests that Sn has a higher reactivity than Fe.

4. Sn + unknown metal: 0.253V

  The voltage of 0.253V suggests that the reaction of Sn with the unknown metal is not spontaneous. The unknown metal is more reactive than Sn since it acts as the reducing agent, while Sn acts as the oxidizing agent.

In summary, Sn is more reactive than Ag, Cu, and Fe based on their respective voltage values. However, the unknown metal is more reactive than Sn.

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Answer: If a reaction releases 675,000 Joules then it means it releases 161.328872 kcal.

Explanation:

According to the standard conversion,

\(1 Joule = 0.000239006 kcal\)

Therefore, 675,000 Joules will be converted into kcal as follows.

\(1 Joule = 0.000239006 kcal\\675,000 J = 675000 J \times \frac{0.000239006 kcal}{1 J}\\= 161.328872 kcal\)

Thus, we can conclude that if a reaction releases 675,000 Joules then it means it releases 161.328872 kcal.

newton's first law of motion states than an object motion will not change unless subjected to an external force.

Food chemistry is a branch of chemistry that deals with the composition, properties, and interactions of food constituents and the chemical reactions and processes that occur during food processing, storage, and preparation.

It plays an important role in understanding the nutritional value and safety of foods, as well as in developing new food products and technologies.

Opinion:
Food chemistry is an essential field of study as it has led to significant advancements in food processing technology and the production of safer, healthier, and more nutritious foods. It also provides insights into the chemical composition and properties of foods, which can help to understand the interactions between food components and how they affect human health. Overall, I believe that food chemistry is crucial in improving food quality and safety.

Pros:

1. Food chemistry can help in developing new food products with improved taste, nutritional value, and shelf life.

2. It can help to identify and remove harmful substances from foods, thereby ensuring their safety.

3. Food chemistry can aid in the development of food additives, preservatives, and processing techniques that can help to preserve the quality and nutritional value of foods.

Cons:

1. The use of food additives and preservatives can have negative health effects in some people, such as allergic reactions.

2. Food processing can sometimes lead to a loss of nutrients in foods, which can be harmful to human health.

3. There is a risk of contamination or adulteration of foods during processing or storage, which can compromise food safety.

Overall, food chemistry is a crucial field of study that has both benefits and drawbacks. By identifying and addressing these pros and cons, researchers and food industry professionals can work together to develop safer, healthier, and more sustainable food products for the future.

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