One of the basic building blocks of matter, which cannot be broken down by chemical means is a(n)______ , of which there are 92 that occur naturally.

Answer:

c2Na+2H 2 0 -2NASH +H 2

Explanation:

i think its wrong

The errors in concentration which are introduced when only dilution include the following:

This is the process in which the concentration of a solute in a solution is decreased and it's usually done by adding water to it.

When performing dilution, errors which may occur include incorrect measurement and contamination of the samples.

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Answer:

43.2 x 10⁻¹¹

Explanation:

The rate law equation for the reaction is:

Rate = k[CH₃CHO]²

In the table, you are given some of the concentrations and rates. What you are not given is the value of "k". Since you are only given the concentration in Trial 3, you need to know the value of "k" in order to find the rate. To find this value, plug the information from one of the trials into the equation and simplify to find "k".

Rate = k[CH₃CHO]²

2.70 x 10⁻¹¹ = k[2.00 x 10⁻³]²

2.70 x 10⁻¹¹ = k[4.00 x 10⁻³]

6.75 x 10⁻⁶ = k

Now that you know the value of "k", you can use it and the concentration from Trial 3 to find the rate.

Rate =  k[CH₃CHO]²

Rate = (6.75 x 10⁻⁶)[8.00 x 10⁻³]²

Rate = (6.75 x 10⁻⁶)[6.4 x 10⁻⁵]

Rate = 4.32 x 10⁻¹⁰  -------> 43.2 x 10⁻¹¹

Answer:

A reaction is "completed" when it has reached equilibrium — that is, when concentrations of the reactants and products are no longer changing. If the equilibrium constant is quite large, then the answer reduces to a simpler form: the reaction is completed when the concentration of a reactant falls to zero.

Explanation:

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In the given illustration, Carbon is black, and Oxygen is red. The given reaction can be balanced by following the law of conservation of mass.The reaction can be given as:

CO + O2 → CO2

Here, CO and O2 are the reactants, and CO2 is the product.To balance the given equation, the coefficients can be placed before each substance present in the reaction.Here are the balanced coefficients required to balance the reaction illustrated: 2 CO + O2 → 2 CO2. Here, the coefficient 2 is required to balance both the reactants and products.

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Answer:

1.78 moles

Explanation:

to find moles, use the formula moles=mass/rfm

the rfm is the mass number (the bigger number) on the element's square thingy on the periodic table

the mass number of fluorine is 19

19*2 (because it's diatomic you multiply it by 2) =38

so 67.8/38=1.78421052632

round it to 2 sf= 1.78 moles

Answer:

C

Explanation:

Explanation:

atomic number = proton

Answer:

59.46 g

Explanation:

To answer this question, the molecular weight of ammonium sulfate must be computed.  To accomplish this, the weights of the individual elements must be noted.
N=14.01\(\frac{g}{mol}\)

H=1.01\(\frac{g}{mol}\)

S=32.07\(\frac{g}{mol}\)

O=16.00\(\frac{g}{mol}\)

To compute the molecular weight:

\(2[14.01\frac{g}{mol}+4(1.01\frac{g}{mol})]+32.07\frac{g}{mol}+4(16.00\frac{g}{mol})=132.14\frac{g}{mol}\)

To calculate the mass:

\(0.45 mol(\frac{132.14g}{1mol})=59.463g\)

Answer:

fdsfesd

Explanation:

fesdfes

Answer:

To answer your question use the code ICE on here to get your answer works every time for me hope this helps

The specific gravity measured by the urine chemical reagent strip method is a measure of the density of the urine compared to water.

What is specific gravity?
The ratio of a substance's density (mass per unit volume) to the density of a specific reference material is known as its relative density or specific gravity. When determining a substance's specific gravity, liquids are typically compared to the densest form of water (at 4 °C or 39.2 °F); for hydrocarbons, the reference point is air at room temp (20 °C or 68 °F). Scientific jargon favours the term "relative density," which is frequently abbreviated as "RD," while deprecating the term "specific gravity." A substance is less dense than the reference if its relative density is less than 1, and it is denser than the reference if it is greater.

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A) Animals break down food molecules to obtain energy. B) The remains of producers are broken down by decomposers. and C) The remains of consumers are broken down by soil decomposers.

Decomposers are organisms that break down dead or decaying organisms, and in doing so, they carry out the natural process of decomposition. Decomposers are a vital part of the food chain and the nutrient cycle. They are usually fungi and bacteria, but may also include other organisms, such as protists and certain animals, like worms and certain insects. Decomposers play an important role in the cycle of matter and energy in an ecosystem. They break down dead and decaying organisms, as well as feces, and in doing so, they release important nutrients back into the soil, which can then be used by other organisms. Decomposers are essential for the health of an ecosystem, as they help to maintain the balance of organisms and resources in an environment.

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Answer:

He put segregationists in charge of federal agencies...

Explanation:

...

Answer:

He placed segregationists in charge of federal agencies.

Explanation:

You will need 60ml of the 75% solution to add to the 240ml of a 25% alcohol mixture.

A solution is a specific kind of homogenous mixture made up of two or more components that is used in chemistry. A solute is a substance that has been dissolved in a solvent, which is the other substance in the mixture. The solvent particles will pull the solute particles apart and surround them if the attractive forces between the solvent and solute particles are stronger than the attractive forces holding the solute particles together. The particles of the solute that are enclosed by the solid solute subsequently disperse into the solution.

Now m be the amount of the 75% mixture and you have 240ml of the 25% alcohol mixture.

75% m + 25%(240) = 35%(m + 240)

75/100m + 25/100 × 240 = 35/100m + 35/100 × 240

divide all by 5 to get,

15/20m + 5/20 × 240 = 7/20m + 7/20 × 240

multiply by 20 to get

15m + 1200 = 7m + 1680

Then it will reduces to,

8m = 480

m = 60ml.

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When filling a buret for a titration, first adjust the buret in the clamp so that it is vertical. Then, choose an appropriate funnel to add the titrant into the buret. The titrant should be filled to just above the zero mark on the buret, and the buret tip should be briefly opened to remove any bubbles.

After that, the buret can be adjusted to the desired volume and the titration can proceed. It is important to take note of the initial buret reading before starting the titration to ensure accurate measurement of the titrant volume.

When filling a buret for a titration, it is important to first adjust the buret in the clamp so that it is vertical and its tip is below eye level to ensure accurate volume measurements. Next, choose an appropriate method to add the titrant into the buret, such as using a funnel or a pipette.

It is important to avoid splashing or spilling the titrant to ensure accurate and precise measurements. The titrant should be filled above the zero mark on the buret and then slowly drained until the bottom of the meniscus is aligned with the zero mark.

This process is called "buret priming" and it helps to remove any air bubbles from the buret tip that can affect the accuracy of the measurements. Once the buret is primed and filled with the titrant, it is ready to be used for the titration.

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You can increase the thermal energy of a substance by heating it. When you apply heat, you are transferring energy from one source to another.

The state of matter of a substance is an extrinsic property, which means that its surroundings can alter it. The state of matter is influenced by physical factors like pressure and temperature. A substance’s temperature rises when thermal energy is applied, changing the substance’s state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).

Sublimation is defined as the property of a substance when it directly converts to a gaseous state from a solid state. Condensation can occur when a substance is subjected to increasing pressure. It may evaporate as a result of a decrease in pressure. Decreased pressure can also cause some forms of rock to melt.

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Hello! HNO2 is not a strong acid so therefore your answer is A.

A rule of thumb, the rest are strong acids, so when you ever come across a similar question you will be able to rule out the wrong answers quicker :).

Strong acid list:

H2SO4

HNO3

HCLO4

HCLO3

HCL

HBr

HI

hope this helps!

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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The order of activity from most active to least active in the given scenario is: zinc, iron, lead. This is because zinc is the most active element in the group, as it has the least number of valence electrons.

making it more likely to participate in chemical reactions and replace other elements. Iron is the next most active, as it has a higher number of valence electrons than zinc, but still fewer than lead, which is the least active element in the group due to its high number of valence electrons, making it less likely to participate in chemical reactions and replace other elements.A chemical element with the atomic number 30 and the symbol Zn is zinc (Zn). It belongs to the periodic table's group 12 and is a transition metal. A bluish-white, glossy metal with high conductivity for electricity, zinc is a substance. It reacts with oxygen and water to produce zinc oxide (ZnO) and zinc hydroxide (Zn(OH)2) due to its comparatively high reactivity. Brass manufacture, galvanizing (coating steel or iron to prevent corrosion), and alloying other metals all utilize it often.

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Answer:

pollution and waste every where like in are ouceans

Explanation:

People around us will affect us in positive or negative way. If someone is going to torture mentally or abuse by anything it will negatively impact on us. If some people support for our good deeds it will helps us positively.

We are all social livings. We do influenced from our surrounding atmosphere, the people, place, climate everything. There will be positive things as well negative influences.

Some people behaves as anti social and they may ruin the life of others directly or indirectly. They may abuse others or being angry. These facts will make a person hate or the circumstances and will tend to runoff there.

Some other people always support for good beings and motivates others in their falls and hopeless conditions. From these kind of people, we can absorb the positive thoughts from positive people.

Good deeds and positive talks will make the surroundings also positives otherwise it will lead to negative thoughts and image that affect mental health.

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Rainforests are not generally considered a source of none of the above choices. You can get food from Rainforests, and also spices and medicines. In fact, Rainforests have a variety of plants that have medicinal properties. When you know how to find the right plant in the rainforests, you can access almost everything.

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Answer:

D. None of the above

Explanation:

trusttt

Answer:

????? questions there no question

Answer:

what

Explanation:

The three true statements are:1,2,3

Three true statements from the provided options are:

The bilayer of a cellular membrane is primarily composed of amphipathic (amphiphilic) lipids. This statement is true. The cellular membrane consists of a phospholipid bilayer, with the hydrophilic (polar) heads facing the aqueous environment and the hydrophobic (nonpolar) tails facing inward, creating a barrier.

The tendency of hydrophobic molecules to aggregate in water is called the hydrophobic effect. This statement is true. Hydrophobic molecules repel water due to their nonpolar nature, causing them to aggregate together to minimize contact with water. This phenomenon is known as the hydrophobic effect.

Placing a hydrophobic molecule into water causes water molecules to orient themselves around it. This statement is true. In order to minimize contact with hydrophobic molecules, water molecules arrange themselves in an ordered network around the hydrophobic molecule, forming a hydration shell. This arrangement is energetically favorable and helps to stabilize the system.

The other statements, such as the increase of water entropy around hydrophobic molecules and the formation of micelles by nonpolar molecules, are not true. Increasing the order of water around hydrophobic molecules decreases the entropy of water, and nonpolar molecules typically form micelles in nonpolar solvents rather than in water.

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The mass of the products when 5g of a chemical A is combined with 5g of chemical B is 10g.

The law of conservation of mass is a law of classical physics that states that the total mass of a closed system remains constant regardless of the chemical or physical changes that take place within it.

The law explains that a mass in an isolated system can neither be created nor be destroyed but can be transformed from one form to another”.

This means that in a chemical reaction, the mass of the reactants must be equal to the mass of the products.

According to this question, chemical A has a mass of 5 grams and chemical B has a mass of 10 grams. If these two chemicals are mixed and a complete chemical reaction occurs, the total mass of the products in accordance with the law of conservation of mass is 5g + 5g = 10 grams.

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Answer:

For 2. the answer is 15.0 mL

For other examples, you can solve by exact way as I have solved the 2nd example.

I have writen down all the balanced chemical reaction equation for examples 1, 3, 4, 5 for you. ( picture 2 )

Explanation:

Please see the step-by-step solution in the picture attached below.(picture 1)

Hope this answer can help you. Have a nice day!

The mass of the air in the room is approximately 5.65 kg.

To solve the problem, we need to convert the dimensions of the room from feet to liters, then use the density of air to calculate the mass of the air in the room.

First, let's convert the dimensions of the room from feet to liters:

1 ft = 0.3048 m

1 m^3 = 1000 L

So, the volume of the room in liters is:

V = (11.5 ft) × (17.5 ft) × (9.0 ft) × (0.3048 m/ft)^3 × (1000 L/m^3)

= 4740 L

Now, we can use the density of air to calculate the mass of the air in the room:

mass = density × volume

= 1.19 g/L × 4740 L

= 5646.6 g

≈ 5.65 kg

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Answer:

Explanation:

The basic idea of a hypothesis is that there is no predetermined outcome. For a solution to be termed a scientific hypothesis, it has to be an idea that can be supported or refuted through carefully crafted experimentation or observation.