The [H3O+] for 0.26 M HCl is 0.26 Calculate the [OH-] for 0.26 M HCl. Answer in units of M.

Balanced chemical reaction

\(\\ \rm{:}\dashrightarrow 3M+N_2\longrightarrow M_3N_2\)

Answer:

Diamond - E

Sugar- C

Milk - M

Iron- E

Air- M

Sulfuric Acid- C

Gasoline - M

Electricity- X

Krypton- E

Bismuth - E

Uranium - E

Kool-Aid -M

Water - C

Alcohol - C

Pail of Garbage - M

Ammonia - C

Salt - C

Energy - X

Gold - E

Wood - M

Bronze - M

Ink - M

Pizza - M

Dry Ice - C

Baking Soda - C

Explanation:

An element is the smallest part of a substance that is capable of independent existence. An element cannot be broken down into any other substance. Krypton, Bismuth etc are all elements.

A compound is a combination of two or more elements which are chemically combined together e.g NH3, CO2 etc.

A mixture is any combination of substances that are not chemically combined together. E.g Pizza, milk etc

Answer:

5.13x10>-2

Explanation:

Answer:

A. CODIS

Explanation:

The Combined DNA Index System (CODIS), administered by the FBI, maintains DNA profiles obtained through federal, state, and local DNA sample collection programs, and makes this information available to law enforcement agencies across the country for law enforcement identification purposes.

The helium tank has a pressure of 650 torr at 25 degree Celsius and when the temperature is tripled, the pressure will be approximately 1945.71 torr

To find the new pressure when the temperature is tripled, we can use the ideal gas law, which states that the pressure of a gas is directly proportional to its temperature when the volume and the number of particles remain constant. The ideal gas law is given by the equation:

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

First, we need to convert the initial temperature of 25 degrees Celsius to Kelvin. Adding 273.15 to the Celsius temperature gives us 298.15 K.

Let's assume that the volume, number of moles, and the gas constant remain constant.

If the temperature is tripled, the new temperature would be 3 times the initial temperature, which is 3 * 298.15 K = 894.45 K.

Now, we can set up a proportion to find the new pressure:

P1 / T1 = P2 / T2

Solving for P2 (the new pressure), we get:

P2 = (P1 * T2) / T1

Plugging in the values, we have:

P2 = (650 torr * 894.45 K) / 298.15 K

Calculating this expression, we find:

P2 ≈ 1945.71 torr

Therefore, when the temperature is tripled, the pressure will be approximately 1945.71 torr.

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Answer:

5

Explanation:

Answer:

Preventing erosion – Land Reclamation

Protecting nesting areas – Protecting Biodiversity

Preventing littering – Land Reclamation

Preventing habitat disruption – Protecting Biodiversity

Protecting native species – Protecting Biodiversity

Preventing contamination of soil – Land Reclamation

Explanation:

I really hope I'm right! I tried my hardest, please give me brainliest :)

have a good day!

The balanced chemical equation for the reaction between Pb(NO3)2 and NaCl is:

Pb(NO3)2 + 2NaCl -> PbCl2 + 2NaNO3

In order for a chemical equation to be balanced, the number of atoms of each element in the reactants must be equal to the number of atoms of each element in the products.

In the given equation, there are one Pb atom, two Na atoms, two Cl atoms, two N atoms, and six O atoms on the left-hand side (reactants) of the equation. On the right-hand side (products) of the equation, there are one Pb atom, two Na atoms, two Cl atoms, two N atoms, and six O atoms.

To balance the equation, we need to adjust the coefficients (the numbers in front of the chemical formulas) so that the number of atoms of each element is the same on both sides. In this case, we need to add a coefficient of 2 in front of NaCl on the reactant side to balance the number of Cl atoms, which also adds 2 Na and 2 NO3 atoms. This gives us:

Pb(NO3)2 + 2NaCl -> PbCl2 + 2NaNO3

Now the equation is balanced because there are the same number of atoms of each element on both the reactant and product sides.

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To kill bacteria, chlorine is added to the water. However, it does not function immediately away and kill CDC.

Thus, When handled correctly, free chlorine* can destroy the majority of bacteria in a matter of minutes.

The CDC advises maintaining a pH of 7.2–7.8 and free chlorine levels of at least 1 ppm in swimming pools and 3 ppm in hot tubs and spas.

The CDC advises a pH of 7.2–7.8 and a free accessible chlorine content of at least 2 ppm in swimming pools when using cyanuric acid, a chlorine stabilizer, or chlorine products containing cyanuric acid (for instance, products generally known as dichlor or trichlor. The CDC advises against using cyanuric acid or chlorine products containing it in hot tubs or spas.

Thus, To kill bacteria, chlorine is added to the water. However, it does not function immediately away and kill CDC.

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A)Nuclear fusion releases protons and neutrons, so the total number of protons and neutrons in a star changes throughout its life is the true statement.

A suggested method of producing energy would use heat from nuclear fusion processes to produce electricity. A heavier atomic nucleus is created by the fusion of two lighter ones, which also produces energy. Fusion reactors are devices created to use this energy.

Nuclear fusion is less risky than nuclear fission because the fuel rods produced by nuclear fission include dangerous radioactive waste that may be used in weapons and must be maintained carefully for thousands of years.

Powering the Sun and other stars are nuclear fusion processes. Two light nuclei combine to produce one heavy nucleus during a fusion process. The resultant single nucleus's total mass is less than the mass, which causes the process to release energy.

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Answer:

0.10 amps

Explanation:

A hypothesis is a proposed explanation or prediction based on limited evidence or observations, which can be tested through further investigation or experimentation. It should be specific, testable, and based on existing knowledge.

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Answer:

2, 4

Explanation:

Answer:

yqujsbr

Explanation:

hejsudh2ihdg4 they t sjh5c4uSvreju5 aur bd84kskythddok6vr for

Answer:

I would choose E

Explanation:

Chemical reactions occur when chemical bonds between atoms are formed or broken. The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products

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Considering the definition of molar mass, 5 grams of hydrogen is contained in methane, which contains 15 grams of carbon.

Definition of molar mass

The molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.

The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.

In this case, you know the molar mass of the elements is:

So, the molar mass of the compound CH₄ is calculated as:

CH₄= 12 g/mole + 4× 1 g/mole

Solving:

CH₄= 16 g/mole

In this case, from the above you can see that 1 mole of methane contains 4 grams of hydrogen.

In first place, you must know the moles de methane that contain 15 grams of carbon. For that, you can apply the following rule of three: If from the above you can see that 12 grams of carbon are contained in 1 mole of methane, 15 grams of carbon are contained in how many moles of methane?

\(moles of methane=\frac{15 grams of carbonx1 mole of methane}{12 grams of carbon}\)

moles of methane= 1.25 moles

Next, you can apply the following rule of three: If 1 mole of methane contains 4 grams of hydrogen, 1.25 moles of methane contains how many moles of hydrogen?

\(mass of hydrogen= \frac{1.25 moles of methanex4 grams of hydrogen}{1 moles of methane}\)

mass of hydrogen= 5 grams

Finally, 5 grams of hydrogen is contained in methane, which contains 15 grams of carbon.

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Explanation:

If 50.0 grams of Zinc are reacted with 50.0 grams of Hydrogen Chloride ... 50.09 Zn x 1 mol Zn , Imol ZnCl2 , 136.4g. ... If a decomposition reaction produces a 75.0% yield for the oxygen by mass (128.0 grams were.

Answer:

A its a step by step equation the answer is A

Answer:

5.5 grams

Explanation:

To find how much of the isotope remains, you need to use the half-life equation:

\(N(t) = N_0(\frac{1}{2})^\frac{t}{h}\)

In this equation,

-----> N(t) = remaining mass (g)

-----> N₀ = initial mass (g)

-----> t = time (hrs)

-----> h = half-life (hrs)

You can find the remaining mass by plugging the given values into the equation and solving.

N(t) = ? g                          t = 30 hrs

N₀ = 22 g                         h = 15 hrs

\(N(t) = N_0(\frac{1}{2})^\frac{t}{h}\)                                         <----- Half-life equation

\(N(30) = (22)(\frac{1}{2})^\frac{30}{15}\)                                    <----- Insert values

\(N(30) = (22)(\frac{1}{2})^2\)                                      <----- Simplify exponent

\(N(30) = (22)(0.25)\)                                   <----- Solve \((\frac{1}{2} )^2\)

\(N(30) = 5.5\)                                              <----- Multiply 22 and 0.25

Plants are directly influenced by human activities because deforestation or the use of land for other purposes dramatically and negatively affects ecosystems.

The relationship between human activities and plant habitats suppose a risk factor for natural plants because human populations alter the ecosystem with industrial activities and deforestation in order to obtain land for agriculture and urbanization purposes.

Therefore, with this data, we can see that the relationship between human activities and plant habitats is negative in the sense humans may be dangerous to the ecosystem.

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An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

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The concentration (M) of hydrogen fluoride is mathematically given as

HF= 0.095 M

Question Parameters:

A buffer solution contains 0.100 M fluoride ions and 0.126 M hydrogen fluoride.

after addition of 9.00 mL of 0.0100 M HCl to 25.0 mL of this buffer solution

Generally, the equation for the Chemical Reaction  is mathematically given as

F- + H+ > HF

Where

Initial moles of HF = molarity * volume

mi= 0.126 × 25

mi= 3.15

Hence

moles of F- = 2.5 milimoles

moles of H+ added  = 0.09mol

In conclusion

Total volume of Hf = 9 + 25

Total volume of Hf = 34 ml

Where

moles of HF after reaction

mr= 0.09 + 3.15

mr= 3.24

Hence

HF = 3.24 /34

HF= 0.0953 M

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Answer:

In chemistry, a compound is a substance made up of two or more different chemical elements combined in a fixed ratio. When the elements come together, they react with each other and form chemical bonds that are difficult to break.

Explanation:

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As with most stoichiometry problems, it is necessary to work in moles. The ratio of the moles of each element will provide the ratio of the atoms of each element.

Get the mass of each element by assuming a certain overall mass for the sample (100 g is a good mass to assume when working with percentages).

Remeber that percentages are a ratio multiplied by 100. You must convert percentages back to their decimal value before working with them.

(.4838) (100 g) = 48.38 g C

(.0812 ) (100 g) = 8.12 g H

(.5350) (100 g) = 53.38 g O

Convert the mass of each element to moles of each element using the atomic masses.

(48.38 g C) (1 mol/ 12.10 g C) = 4.028 mol C

(8.12 g H) (1 mol/ 1.008 g H) = 8.056 mol H

(53.38 g O) (1 mol/ 16.00 g O) = 3.336 mol O

Find the ratio or the moles of each element by dividing the number of moles of each by the smallest number of moles.

Use the mole ratio to write the empirical formula.

Answer:

I think it is covalent bonding...

Explanation:

The bonding is covalent in homonuclear diatomic molecules. Each atom in the molecule has the same electronegativity, which means electrons are shared equally between the two. The electronegativity of the atoms in heteronuclear diatomic molecules varies, and these molecules have polar covalent bonds. A dipole is formed when a molecule interacts with another molecule. (i think it's covalent bonding but i might be wrong)

hope this helps...

Go to the Data tab > Sort & Filter group, and click Clear.

Go to the Home tab > Editing group, and click Sort & Filter > Clear.

"The characteristics of electro-magnetic travel in straight lines and have the ability to bounce off objects. Traveling at the speed of light can bend around moving objects due to the interplay of an electric and magnetic field."

What is electromagnetic wave?

Electromagnetic waves, or EM waves, are formed when an electric field as well as a magnetic field vibrate together. EM waves, in other terms, are magnetic and electric fields that oscillate.

What is Electromagnetic radiation?

Electromagnetic radiation is made up of electromagnetic field waves that travel over space and convey electromagnetic radiant energy. Radio waves, microwaves, infrared, light, ultraviolet, X-rays, and gamma rays are all examples. The electromagnetic spectrum includes all of these wavelengths.

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