What can cause the pH of water to be either to basic or to acidic

Answer:

2

Explanation:

Electron

Answer:

\(p=13330kg*\frac{m}{2}\)

Explanation:

Hello there!

In this case, since the momentum of any body is calculated by multiplying the mass and the velocity:

\(p=m*v\)

We simply need to multiply the 215 kg of the motorcycle by the velocity it has, 62 m/s to obtain:

\(p=215kg*62m/s\\\\p=13330kg*\frac{m}{2}\)

Regards!

Answer:

0.0866 M

Explanation:

answer key

The molarity of the NaOH solution has been 0.0865 M.

The neutralization reaction of the Phosphoric acid and NaOH results in the formation of sodium phosphate and water.

The balanced chemical equation can be given as;

\(\rm H_3PO_4\;+\;3\;NaOH\;\rightarrow\;Na_3PO_4\;+\;3\;H_2O\)

Thus for the neutralization of 1 mole of Phosphoric acid, 3 moles of NaOH has been used.

The moles of phosphoric acid in 0.100 grams sample:

Moles = \(\rm \dfrac{weight}{molecular\;weight}\)

Moles of phosphoric acid = \(\rm \dfrac{0.100}{99}\)

Moles of phosphoric acid = 0.001 mol

For the neutralization of 0.001 moles of NaOH:

1-mole Phosphoric acid = 3 moles NaOH

0.001-mole Phosphoric acid =0.003 moles of NaOH.

The molarity of the NaOH solution:

Molarity = \(\rm \dfrac{moles}{Volume\;(L)}\)

Molarity of NaOH = \(\rm \dfrac{0.003}{0.035}\)

Molarity of NaOH = 0.0865 M

The molarity of the NaOH solution has been 0.0865 M.

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Answer:

Nonmetals is the answer!

Hope this helped!

Answer:

NONMETALS. :)

Explanation:

im in sixth btw.

Answer:

It's the second answer

Explanation:

You learned this in elementary school mixtures aren't chemically mixed.

Answer:

(sorry if i'm too late)

Explanation:

A mixture is a material system made up of two or more different substances, which are mixed but not combined chemically. A mixture refers to the physical combination of two or more substances in which the identities of the individual substances are retained.

Basically, a mixture is not chemically combined  

Answer:

it should be  0-0

Explanation:

The statement “the yeast engages in photosynthesis, which produces oxygen gas” is incorrect. Yeast cells do not engage in photosynthesis to produce oxygen gas.

Photosynthesis is the process by which green plants use sunlight, carbon dioxide, and water to produce glucose (a simple sugar), which serves as food for the plant.

Oxygen is also produced during photosynthesis.Yeast:Yeast is a unicellular fungus that converts sugar into carbon dioxide and alcohol. Yeast cells respire aerobically in the presence of oxygen and anaerobically in the absence of oxygen.

However, yeast cells do not perform photosynthesis. They do not have chloroplasts or pigments that are required for photosynthesis. Therefore, yeast cells cannot produce oxygen gas.Bio quizlet:Quizlet is an online learning platform that allows users to create and share flashcards, study guides, and quizzes.

It is a great resource for studying biology and other subjects. Students can create their own study materials or use existing ones created by other users. Quizlet provides an engaging and interactive way to learn and retain information.

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If the equilibrium constant, Kc, for the following reaction is 1.89 × 10⁻⁶at 506 K, Kc for the reaction: NH3(g) + HCl(g) → NH4Cl(s)is 5.291 × 10⁵.

The given reaction is: NH4Cl(s) → NH3(g) + HCl(g)

To calculate Kc for the reaction: NH3(g) + HCl(g) → NH4Cl(s) we must reverse the given reaction. We must use the relationship: If aA + bB ⇌ cC + dD then Kc = [C]c[D]d/[A]a[B]b where [A], [B], [C], [D] are molar concentrations at equilibrium, while a, b, c, d are the coefficients of the balanced chemical equation. To reverse the given reaction, we must invert the value of the Kc. The equation is: NH4Cl(s) ⇌ NH3(g) + HCl(g)Kc = 1.89 × 10⁻⁶at 506 K

Now, we will invert this equation. Kc(NH3)(HCl) = 1/Kc(NH4Cl)

Now, substituting the values: Kc(NH3)(HCl) = 1/(1.89 × 10⁻⁶)Kc(NH3)(HCl) = 5.291 × 10⁵

Therefore, Kc for the reaction:NH3(g) + HCl(g) → NH4Cl(s)is 5.291 × 10⁵.

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Answer:

0.28moles of silicon

Explanation:

Given parameters:

Number of molecules of silicon  = 1.7 x 10²³molecules

Unknown:

Number of moles of the silicon  = ?

Solution:

A mole of any substance contains the Avogadro's number of particles.

   1 mole of a substance contains 6.02 x 10²³molecules;

  So;

     1.7 x 10²³molecules contains \(\frac{1.7 x 10^{23} }{6.02 x 10^{23} }\)   = 0.28moles of silicon

Five drops of 1.0m HCl decrease the pH of a solution from 10.0 to 9.3. Five additional drops of 1.0m HCl decrease the pH to 9.2. These results are evidence that the solution is buffered with a weak acid and its conjugate base.

These results are evidence that the solution is buffered with a weak acid and its conjugate base. When a solution is buffered, it resists changes in pH when small amounts of acid or base are added. This is because a buffer is made up of a weak acid and its conjugate base, which react with any added acid or base to maintain a relatively constant pH.

In this case, the addition of five drops of 1.0 M HCl caused the pH to decrease from 10.0 to 9.3, indicating that the solution contained a weak base and its conjugate acid. The addition of five more drops of 1.0 M HCl caused the pH to decrease further to 9.2, which is further evidence that the solution is buffered. Therefore, the solution is buffered with a weak acid and its conjugate base.

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Answer:

Crayons use wax and Oil pastels use non-drying oil and wax. Besides the composition of the colours, there is a huge difference in how a wax crayon and an oil pastel works. ... Crayons, don't colour your hands. Well, most crayons don't.

Explanation:

what's crayons are softer and they smudge because they have more oil pastels in them plastic crayons are harder and they don't intend to smudge.

Answer:

it is placed over a bunsen burner to heat up and remove all bacteria

Explanation:

Tetraminobutane (1,1,4,4) has four amino groups and is a kind of diamine that can be combined with other diamines, diacids, or diacyl chlorides to create polyamides.

Tetraminobutane (1,1,4,4) has the chemical formula C6H16N4 and is a diamine compound. Because it is a highly branched chemical with four amino groups at the ends of each branch, it can be used in polymer chemistry cross-linking and branching reactions. In the synthesis of polyamides, which are high-performance polymers with several uses in the textile, automotive, and aerospace sectors, TMB is frequently utilised as a co-monomer. TMB is a special building block for the design and synthesis of new polymeric materials with specialised properties and functionality thanks to its high reactivity, branching potential, and cross-linking capability.

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Answer

[Ne] 3s² 3p⁶

Explanation:

Neutral sulfur has an atomic number of 16.

Neutral sulfur has 16 electrons and 16 protons.

However, S²⁻ implies neutral sulfur has gain two more electrons.

So, S²⁻ is negatively charged (anion) and has 18 electrons.

Electronic Configuration

Neutal sulfur (S) → 1s² 2s² 2p⁶ 3s² 3p⁴ → [Ne] 3s² 3p⁴.

Charged sulfur (S²⁻) → 1s² 2s² 2p⁶ 3s² 3p⁶ → [Ne] 3s² 3p⁶.

Therefore, the electron configuration of S²⁻ is [Ne] 3s² 3p⁶.

Answer:

To find the identity of the isotope we must first calculate the mass number

Mass number (M) = A + Z

Where

A is the atomic number

Z is the neutron number

A = 47

Z = 60

M = 60 + 47 = 107

From the options above

The answer is option A

Hope this helps you

150ml of 0.50 M NaOH are required to completely titration, 15.0 mL of .20 M HNO₃ solution.

To determine the concentration of an identified analyte, titration is a typical laboratory technique for quantitative chemical analysis. A standard solution with a known concentration and volume is prepared as the reagent, also known as the titrant or titrator.

The equivalence point, or the point at which chemically equivalent amounts of the reactants have been combined, is to be detected by the titration. The stoichiometry of the reaction determines how many reactants have been combined at the equivalence point.

Thus, 150ml of 0.50 M NaOH are required to completely titration, 15.0 mL of .20 M HNO₃ solution.

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Answer: electrons

Explanation:

electrons are attracted to the nucleus by the charge of the protons. To get past this force, one would need to add energy. Ionization energy increases to the right and up (according to the periodic table trends) because there are more protons as you move across a period, making it harder to take an electron.

The formula for an electron's energy is E=2.1781018J(n2Z2). wavelength of light needed to move an electron from level n=1 to n=2 in an atom of hydrogen.

The energy needed to remove the electron from Li++'s first excited state is if the binding energy of the electron in a hydrogen atom is 13.6 eV. (A) 122.4eV.

It is necessary to ascertain the electrical configuration of the given nucleus and the level from which the electron has been ejected. Discover the wavelength that matches the ejected condition. the difference in energy level between the electron.

electron's energy is E=2.1781018J(n2Z2)

level n=1 to n=2

hydrogen atom is 13.6 eV. (A) 122.4eV.

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A chemical alteration has occurred. A new material, cottage cheese, with distinct qualities from the original milk and vinegar is produced when the acid in the vinegar and the proteins in the milk react.

The change described is a chemical change. When vinegar, which is an acid, is combined with milk, a reaction occurs between the acid and the proteins in the milk. This reaction causes the milk to sour and thickens, resulting in the formation of cottage cheese. This change cannot be easily reversed, and the resulting cottage cheese is a new substance with different properties than the original milk and vinegar. This is a chemical change because the molecules in the milk and vinegar are rearranged to form a new substance, which has different chemical and physical properties than the original substances. This process is different from a physical change, such as melting ice, which does not result in the formation of a new substance.

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Answer:

To convert grams to kilograms, you divide the number of grams you have by 1000. So, 800 g = 800/1000 = 0.8 kg.

Explanation:

Answer:

2Mg + O2 → 2MgO

Explanation:

Answer:

I'm pretty sure the volume decreases because the volume is like how much space it takes up. Sorry if im wrong.

Answer:

D. both are stated to be in aqueous solutions by the (aq)

Explanation:

Taking into account the definition of molarity, the molarity of the solution is 2.351 M.

Molarity is a measure of the concentration of a solute in a solution and indicates the number of moles of solute that are dissolved in a given volume.

The molarity of a solution is calculated according to the following formula:

molarity= moles÷ volume

Molarity is expressed in units \(\frac{moles}{L}\).

In this case, you have for methanol:

On the other hand, you know for ethanol:

Assuming additive volumes, the total volume is:

Total volume= Volume methanol + Volume ethanol= 7.92 mL + 125 mL= 132.92 mL= 0.13292 L (being 1000 mL= 1 L)

Replacing in the definition of molarity:

molarity= moles of methanol÷ total volume

molarity= 0.3125 moles÷ 0.13292 L

Solving:

molarity= 2.351 \(\frac{moles}{L}\)= 2.351 M

Finally, the molarity of the solution is 2.351 M.

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When switch S is closed, positive ions will undergo a drift velocity and move towards the negative electrode. A drift velocity is the average velocity an ion will undergo while in an electric field. The electric field pushes on the positive ions and accelerates them towards the negative electrode.

When the ions reach the negative electrode, they lose their charge and deposit on the electrode surface. The movement of positive ions is important in various processes such as electrolysis, batteries, and other electrochemical applications. The ions move in response to the electric field created by the potential difference between the two electrodes. The strength of the electric field is determined by the voltage and the distance between the two electrodes. In general, the larger the voltage and the shorter the distance between the electrodes, the stronger the electric field and the faster the ions move towards the negative electrode.

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The pH of the buffer consisting of 0.11 M H3PO4 and 0.11 M NaH2PO4 is approximately 2.21.

To calculate the pH of the buffer, we'll use the Henderson-Hasselbalch equation, which is pH = pKa + log([A-]/[HA]).

In this case, we have a mixture of a weak acid (H3PO4) and its conjugate base (NaH2PO4), and we need to find the pH using the given Ka values. Since Ka1 is the largest and most significant Ka value, we'll use it in our calculation:
1. Determine the pKa: pKa1 = -log(Ka1) = -log(7.2 x 10^-3) ≈ 2.14
2. Calculate the pH using the Henderson-Hasselbalch equation:
  pH = pKa1 + log([NaH2PO4]/[H3PO4]) = 2.14 + log(0.11/0.11)
Since the concentrations of the acid and its conjugate base are equal, the log term becomes log(1) which is equal to 0.
3. Calculate the final pH: pH = 2.14 + 0 = 2.14

Summary: The pH of the buffer consisting of 0.11 M H3PO4 and 0.11 M NaH2PO4 is approximately 2.14.

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The components of the carbon cycle that would be classified as fast processes include:1. Photosynthesis 2. Respiration
3. Decomposition of organic matter 4. Dissolution of CO2 in the ocean 5. Release of CO2 by burning fossil fuels.

The carbon cycle is the process by which carbon, a crucial element for life on Earth, is exchanged and recycled among different reservoirs, such as the atmosphere, oceans, land, and living organisms. Some processes in the carbon cycle are considered fast processes due to their relatively rapid rates of carbon exchange.

Photosynthesis: Photosynthesis is the process by which plants and other photosynthetic organisms use sunlight, carbon dioxide (CO2), and water to produce organic matter and release oxygen.

Respiration: Respiration is the process by which living organisms, including plants, animals, and microorganisms, release energy by oxidizing organic carbon compounds and producing CO2 as a byproduct.

Decomposition of organic matter: Decomposition is the breakdown of dead organic matter by microorganisms, such as bacteria and fungi, into simpler organic compounds and eventually into CO2.

Dissolution of CO2 in the ocean: Dissolution of CO2 in the ocean is a fast process in which atmospheric CO2 dissolves into the surface waters of the ocean, forming dissolved carbon species such as bicarbonate and carbonate ions.

Release of CO2 by burning of fossil fuels: Burning of fossil fuels, such as coal, oil, and natural gas, releases CO2 into the atmosphere as a byproduct of combustion.

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