4. Calculate the density of a solid placed in an initial 50 mL of liquid and afte
dropping the solid in, it rises to 55 mL. The solid has a mass of 20.0 grams
Include the correct sig figs and correct density unit.

Solubility rules are used to predict the outcome of precipitation reactions, which involve the formation of insoluble products.

Solubility rules are guidelines that help predict the solubility of different compounds in water. These rules are based on the general principles of ionic interactions and the solubility of common ionic compounds. When two soluble compounds are mixed together, a precipitation reaction may occur if the resulting compound formed is insoluble in water.

In precipitation reactions, the reactants are typically aqueous solutions of two different compounds. The solubility rules are used to determine if a precipitate will form by identifying the combination of ions that can form an insoluble compound. The rules state that certain combinations of ions will result in the formation of insoluble products, while others will remain soluble in water.

In conclusion, solubility rules are used to predict precipitation reactions, which involve the formation of insoluble products. These rules help determine whether certain combinations of ions will result in the formation of a precipitate or if the compounds will remain soluble in water. By understanding the solubility properties of different ions, scientists and chemists can predict the outcome of chemical reactions and better understand the behavior of substances in solution.

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Answer: Make it extra pointy and the paper must be strong secure, but not too heavy or else is wont fly.

Explanation: it will work if you follow these steps:... BELIEVE IN YOURSELF!!! :)

The purpose of the fourth pot that contained no fertilizer is to observe the actual growth of the plant without any fertilizers.

Fertilizers paintings by means of imparting vital vitamins to developing plants, bushes, and veg, as a form of multi-nutrition or meal substitute for the plant international. Many fertilizers additionally improve the way the soil works by helping it to maintain water higher and allowing air to drift freely, which is right for roots.

Fertilizers increase their growth via the application of fertilizer remedies. development in plant boom was notably discovered by means of the application of each natural and inorganic source of mineral vitamins.

The more fertilizer a crop gets, the faster it grows. We understand if a crop is supplied with too little fertilizer, plant increase response is negative; however if fertilizer charges are immoderate, plant increase slows and there is a potential for root harm or demise from high fertilizer salts.

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Answer:

H₂+O₂→H₂O

Explanation:

Answer: 0on

Explanation:

Answer:

It should be 115.5 amu but you didnt type that as an answer choice so...

Explanation:

Bruh all you had to do was add oxygen and sulfur and subtract from the total to get your answer :D.

She will create a solution.

Explanation:

an increase in concentration increases the rate of the reaction. This is because there are more reactant particles available which allows for more effective collisions between reactant particles in a given period of time. More effective collisions bring about a faster rate of reaction.

Answer:

Mass = 32.69 g

Explanation:

Given data:

Mass of copper = 32 g

Mass of zinc formed = ?

Solution:

Chemical equation:

Cu + Zn(NO₃)₂     →       Cu(NO₃)₂ + Zn

Number of moles of copper:

Number of moles = mass/molar mass

Number of moles = 32 g/ 63.55 g/mol

Number of moles = 0.5 mol

now we will compare the moles of zinc with copper.

           Cu          :           Zn

            1            :            1

          0.5          :         0.5

Mass of Zn:

Mass = number of moles × molar mass

Mass = 0.5 mol  × 65.38 g/mol

Mass = 32.69 g

Answer:

A proton carries a positive charge and an electron carries a negative charge

Explanation:

is this what u want???

When current is applied to an aqueous solution of sodium bromide,

Na is produced at the cathode

Br₂ is produced at the anode

This reaction is an electrochemical reaction, which is defined as " A process involving flow of electrons between an electrode and an electrolyte by passing of electricity". The electrochemical reaction that takes place when rory allies current to an aqueous solution of sodium bromide is given below:

2Na + 2Br→ Br₂ + Na₂⁺+ 2OH⁻

Reactions taking place at cathode:

2Na + 2e⁻ → 2Na

2Na + H₂O → Na⁺ + OH⁻ + H₂

Reaction taking place at anode:

2Br⁻ → Br₂ + 2e⁻

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Answer:

im not sure

Explanation:

Answer:

The difference is typically their level within the organisation, with bookkeeper being the higher of the two.

Also, this question isn't related to Chemistry!

Answer:

An accounting clerk takes care of common office tasks that include reporting, bookkeeping, research, and some more things. Bookkeepers are responsible for giving accurate, up-to-date financial information about a business.

The two choices of acids available in the lab to add to the salsa during production to lower the pH of the salsa are citric acid and vinegar.

Acids are an essential component of salsa, and lowering the pH of salsa is crucial to ensuring the safety of the product. When the pH is low, bacteria growth is slowed down, and the shelf life of the salsa is increased. The two options of acids available in the lab to add to the salsa during production to lower the pH of the salsa are citric acid and vinegar.

Citric acid is one of the most commonly used acids in the food industry. It is a natural preservative and can also be used as a flavor enhancer. When citric acid is added to salsa, it reduces the pH of the salsa, making it more acidic. This makes the environment less hospitable to bacteria, thus extending the shelf life of the salsa. Vinegar is another acid that is commonly used to lower the pH of salsa.

Vinegar is a dilute solution of acetic acid and water. When it is added to salsa, it lowers the pH of the salsa, making it more acidic. As a result, the growth of bacteria is inhibited, and the shelf life of the salsa is extended. In conclusion, citric acid and vinegar are two choices of acids available in the lab to add to the salsa during production to lower the pH of the salsa.

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Explanation:

An element just has one-type atoms/atom (e.g. O2). Meanwhile, a compound is a variety of atoms (e.g. H2O).

the benzoic acid/benzoate buffer ( ka = 6.5x10-5) has been measured to have a ph of 5.6. calculate the ratio of [c7h6o2] to [c7h5o2-]:- the ratio of [C7H6O2] to [C7H5O2-] in the benzoic acid/benzoate buffer is 1:25.1.

Given the information, we need to calculate the ratio of benzoic acid ([C7H6O2]) to benzoate ([C7H5O2-]) in the buffer solution.

1. First, we'll use the  Henderson-Hasselbalch equation, which is:

pH = pKa + log ([A-]/[HA])

In this case, pH = 5.6 and pKa = -log(Ka) = -log(6.5 x 10^-5)

2. Calculate the pKa:

pKa = -log(6.5 x 10^-5) ≈ 4.19

3. Now, plug the pH and pKa values into the Henderson-Hasselbalch equation:

5.6 = 4.19 + log ([C7H5O2-]/[C7H6O2])

4. Solve for the ratio ([C7H5O2-]/[C7H6O2]):

5.6 - 4.19 = log ([C7H5O2-]/[C7H6O2])

1.41 = log ([C7H5O2-]/[C7H6O2])

5. Use the antilog to solve for the ratio:

[C7H5O2-]/[C7H6O2] = 10^1.41 ≈ 25.5

So, the ratio of [C7H5O2-] to [C7H6O2] in the buffer solution is approximately 25.5.

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Answer:

The pressure also increases.

Explanation:

As we can see in this equation,

Pressure is directly proportional to the moles of a gas in the glass jar.

Temperature and Volume remains constant.

Hence, if number of moles of a gas increases, the pressure also increase "n" number of times.

Hi im not sure but there you go . hope its helpful and good luck:)

Answer:

Fossil fuel

Explanation:

Answer:

2

Explanation:

Nonrenewable energy resources include coal, natural gas, oil, and nuclear energy. Once these resources are used up, they cannot be replaced, which is a major problem for humanity as we are currently dependent on them to supply most of our energy needs.

The correct formula for a compound formed from the elements Al and O is Al₂O₃.

Correct option is C.

Aluminum oxide is an oxide of aluminum with the chemical formula Al₂O₃ which is primarily composed of two chemically bonded aluminum and oxygen atoms. Aluminum oxide chemical compounds exist in various forms, with the most common being alpha, gamma, and theta.

The solid compound is an odorless, white powder which is insoluble in water and is a major component of the Earth's crust. It occurs naturally as corundum, bauxite, and cryolite and can be synthetically produced through burning aluminum metal or dissolving alumina tri-hydrate.

Aluminum oxide is widely used in a variety of applications due to its unique properties such as hardness, thermal conductivity, electrical conductivity, optical properties, and chemical inertness.

Correct option is C.

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The phase diagram of water depicts the behavior of water with respect to temperature and pressure, showing the physical states of water: solid, liquid, and gas, at different points on the diagram. It is also known as the pressure-temperature phase diagram

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Answer:

14 elements.

Explanation:

B

boron

C

carbon

F

fluorine

H

hydrogen

I

iodine

N

nitrogen

O

oxygen

P

phosphorus

K

potassium

S

sulfur

W

tungsten

U

uranium

V

vanadium

Y

yttrium

Half life, as stated, is a measurement of the rate at which radioactive material decays.

This process can be artificially produced by people, such as within a nuclear reactor, but can also occur spontaneously in nature. Depending on the particles or energy generated during the reaction, there are many kinds of radioactivity. Alpha particles, beta particles, and gamma rays are the three categories.

Average and half-life are two characteristics that may be used to describe the decay constant. Moments are used as the measuring unit in both scenarios. The average lifespan of such an element, as indicated by its name, may be expressed in the form of the following affirmation:

Nt=N₀ * e^(−λt).

The duration of time that is defined by how long it takes for half of a material to degrade is known as its half-life (both radioactive and non-radioactive elements). All through process of decay, its rate of decay is constant. It may be seen by:

Nt=N₀* (1/2)^(t/t₁₂).

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Answer:

occur if two of the ions form an insoluble ionic compound, which precipitates out of solution

Explanation:

When two ionic compounds are dissolved in water, a double replacement reaction takes place if two of the ions form an insoluble ionic compound, which precipitates out of solution. In double displacement reaction ions switch partners. And hence, produce an insoluble precipitate.

The electron-domain geometry of a species is the arrangement of electron domains around the central atom, whereas the molecular geometry is the arrangement of bonded atoms. Two species with the same electron-domain geometry may have different molecular geometries.

In the valence shell electron pair repulsion (VSEPR) theory, the electron-domain geometry refers to the three-dimensional arrangement of electron domains (bonding pairs and lone pairs) around the central atom. The electron-domain geometry is determined by the total number of electron domains around the central atom, regardless of whether they are bonding or non-bonding pairs.

The molecular geometry, on the other hand, refers to the arrangement of the bonded atoms around the central atom. It is determined by the number of bonding pairs and the number of lone pairs on the central atom. The molecular geometry is often used to describe the shape of a molecule.

For example, a species with four electron domains around the central atom has a tetrahedral electron-domain geometry. However, if all four electron domains are bonding pairs, the molecular geometry is also tetrahedral. If one of the electron domains is a lone pair, the molecular geometry is trigonal pyramidal.

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The number of atoms on both the reactant and product side is equal, the products must contain 4 copper atoms, 5 oxygen atoms, and 10 hydrogen atoms.

A reactant refers to any substance that takes part in a chemical reaction. Chemical reactions involve the breaking and forming of chemical bonds between atoms, molecules, or ions to form new substances. Reactants are the starting materials that undergo a change during a chemical reaction to produce one or more new substances, called products.

Reactants can be solids, liquids, or gases, and they can be pure substances or mixtures. They may be organic or inorganic compounds, acids, bases, salts, or other types of chemicals. Reactants participate in chemical reactions according to their properties and reactivity. The reactivity of a reactant is influenced by its electronic structure, molecular shape, polarity, and other factors.

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The type of bond that results from the side-on overlap of orbitals is a pi (π) bond.

In chemical bonding, the side-on overlap of orbitals occurs when parallel p orbitals align and share electron density. This type of overlap is characteristic of pi (π) bonding.

Pi (π) bonds are formed in addition to sigma (σ) bonds, which result from the head-on overlap of orbitals. Unlike sigma bonds that allow rotation, pi bonds are formed by the sideways overlap of p orbitals and restrict rotation around the bond axis.

Pi bonds are commonly observed in molecules with double or triple bonds, such as alkenes and alkynes. The additional overlap of p orbitals in these molecules creates the pi-bonding framework, which adds strength and stability to the overall molecular structure.

It is important to note that ionic bonds involve the complete transfer of electrons between atoms, while hydrogen bonds are weaker electrostatic attractions between a hydrogen atom and an electronegative atom. Neither of these bond types are directly associated with the side-on overlap of orbitals.

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Answer

10.6 liters

Explanation

What is given:

Density of the gasoline = 0.680 g/mL

Mass of the gasoline = 7.20 kg

What to find:

To find how large of a container, (volume) in liters needed to hold the gasoline.

Step-by-step solution:

Step 1: Convert the mass of gasoline from kg to g.

Conversion factor: 1 kg = 1000 g

So 7.20 kg = (7.20 kg/1 kg) x 1000 g = 7200 g

Step 2: Determine the volume in mL using the density equation.

Step 3: Convert the volume in step 2 from mL to liters.

Conversion factor: 1000 mL = 1 L

So, 10588.24 mL = (10588.24 mL/1000 mL) x 1 L = 10.58824 liters

How large of a container, (volume) in liters needed to hold 7.20 kg of gasoline is approximately 10.6 liters