The ph of a 0. 55 m aqueous solution of hypobromous acid, hbro, at 25. 0 °c is 4. 48. What is the value of ka for hbro?.

55.845 g/mol of the mass of cans in the box we brought had a mass of 23kg. 411.74 mol moles we have.

To determine the number of moles of tin cans you have, we need to know the molar mass of the metal that the cans are made of. Tin cans are usually made of steel, which is an alloy made primarily of iron and carbon, with small amounts of other elements.

To convert the mass of the cans (23 kg) to moles, we need to use the following formula:

moles = mass / molar mass

moles = 23,000 g / 55.845 g/mol = 411.74 mol

Therefore, the number of moles of iron in the 23 kg of tin cans is approximately 411.74 mol.

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Answer:

WATER!!!!!

Explanation:

hope it helps

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The ultraviolet waves have the greatest energy.

Electromagnetic energy refers to the energy carried by electromagnetic waves, which include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

These waves are a type of oscillating electromagnetic field that travels through space at the speed of light. Electromagnetic energy can be described both as a wave and as particles, called photons.

Given the fact that the energy is inversely proportional to the wavelenegth, the ultraviolet radiation has the greatest energy.

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Answer:

C. A down-filled coat via a p e x

Thermal insulation maintains the temperature inside the system and inhibits heat transfer. A down-filled coat would have the best thermal insulation properties. Thus, option C is correct.

Thermal insulation is the property of the substance to resist the heat and energy transfer from a substance of abundance to a lesser concentration. They lack the conducting particles.

It inhibits the heat to get transferred to other substances. The minimum heat transfer is achieved by the structural formation and the choice of the substance.

A down-filled coat is made of insulation material that keeps warm during the winters as its structure can trap and retain heat making the person warm during colds.

Therefore, option C. A down-filled coat best shows thermal insulation.

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Answer:

coastal area with very high tides deep ocean water miles from a river's mouth

Explanation:

Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges(National Geographic Society).

Animals found in a marsh include;  frogs, toads, turtles, snakes, mammals, birds and insects. A marsh is a wetland that is dominated by herbaceous rather than woody plant species(Wikipedia). It is characterized by very high tides deep ocean water miles from a river's mouth.

Answer:

a shallow, sheltered area near an estuary

Explanation:

HCI + NaOH --> NaCl + H2O

Neutralization reaction is the reaction between acid and base which results in formation of salt and water. Here salt is NaCl (common salt) in above reaction.

SO, (A) H20 + NaCl is your answer.

Answer:

182.94 g/mol is the correct

Explanation:

hope this helps

Answer:

Your answer would be:
182.94 g/mol

Explanation:

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Answer:

\(\boxed {\boxed {\sf 0.068 \ mol \ NaCl}}\)

Explanation:

To convert from molecules to moles, Avogadro's Number must be used. This number is 6.022 *10²³. It tells us the number of particles (atoms, molecules, etc.) in 1 mole of a substance.

In this case, the particles are molecules of sodium chloride. We can make a ratio.

\(\frac {6.022*10^{23} \ molecules \ NaCl}{ 1 \ mol \ NaCl}\)

Multiply by the given number of molecules.

\(4.1*10^{22} \ molecules \ NaCl *\frac {6.022*10^{23} \ molecules \ NaCl}{ 1 \ mol \ NaCl}\)

Flip the fraction so the moles of sodium chloride cancel.

\(4.1*10^{22} \ molecules \ NaCl *\frac {1 \ mol \ NaCl}{6.022*10^{23} \ molecules \ NaCl }\)

\(4.1*10^{22} *\frac {1 \ mol \ NaCl}{6.022*10^{23} }\)

\(\frac {4.1*10^{22} \ mol \ NaCl}{6.022*10^{23} }\)

\(0.06808369313 \ mol \ NaCl\)

The original measurement of molecules has 2 significant figures, so our answer must have the same. For the number we calculated that is the thousandth place.

The 0 in the ten thousandth place tells us to leave the 8.

\(0.068 \ mol \ NaCl\)

There are 0.068 moles of sodium chloride.

Answer:

nuclear energy

Explanation:

this holds the nucleus together

Answer:

A. chemical energy

Explanation:

Explanation:

At 4th point the slump block is located

hope this helps you

have a great day :)

It is point 2, for anyone who sees this is the future

2.999 mol Br

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

1.806 × 10²⁴ molecules Br

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

\(\displaystyle 1.806 \cdot 10^{24} \ molecules \ Br(\frac{1 \ mol \ Br}{6.022 \cdot 10^{23} \ molecules \ Br} )\) = 2.999 mol Br

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

Our final answer is already in 4 sig figs, so there is no need to round.

Answer:

\(\boxed {\boxed {\sf About \ 2.999 \ moles \ of \ bromine}}\)

Explanation:

To convert from moles to molecules, we must use Avogadro's Number.

\(6.022*10^{23}\)

This tells us the number of particles (atoms, molecules, ions, etc) in 1 mole. In this problem, the particles are molecules of bromine in 1 mole of bromine.

\(6.022*10^{23} \ molecules \ Br / 1 \ mol \ Br\)

1. Convert from moles to molecules

Use Avogadro's number as a fraction or ratio.

\(\frac{6.022 *10^{23} \ molecules \ Br}{1 \ mol \ Br}\)

Multiply this fraction by the given number of bromine molecules.

\(1.806 *10^{24} molecules \ Br *\frac{6.022 *10^{23} \ molecules \ Br}{1 \ mol \ Br}\)

Flip the fraction so the molecules of bromine can cancel out.

\(1.806 *10^{24} \ molecules \ Br* \frac{1 \ mol \ Br}{6.022 *10^{23} \ molecules \ Br}\)

\(1.806 *10^{24} * \frac{1 \ mol \ Br}{6.022 *10^{23}}\)

Multiply and condense the expression into 1 fraction.

\(\frac{1.806 *10^{24} \ mol \ Br}{6.022 *10^{23} }\)

Divide.

\(2.999003653 \ mol \ Br\)

2. Round

The original measurement, 1.806*10^24 has 4 significant figures (1, 8, 0, and 6). We must round our answer to 4 sig figs. For the answer we found, that is the thousandth place.

\(2.999003653 \ mol \ Br\)

The 0 in the ten-thousandth place tels us to leave the 9 in the thousandth place.

\(\approx 2.999 \ mol \ Br\)

There are about 2.999 moles of bromine in 2.806 *10^23 molecules.

A 4.0 m solution of kno3 has a volume of 1.8 l. if the solution is diluted to 9.0 l, then the new concentration is  0.8 m

The concentration of solution of the amount of solute that has been dissolved in a given amount of solvent or solution

Here given data is

C₁ = 4.0 m

V₁ = 1.8 l

C₂ = ?

V₂ = 9.0 l

So the formula is

C₁V₁ = C₂V₂

4.0 m×1.8 l = C₂× 9.0 l

C₂ = 7.2/9.0 l

C₂ = 0.8 m

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Explanation:

The general formula of an alkane is given as;

        CₙH₂ₙ₊₂

n is the number of the member;

 For the 97th member in the series;

 n  = 97;

 2n + 2  = 2(97) + 2  = 196

So, the 97th member is;

                C₉₇H₁₉₆

This is how to apply the formula of alkanes which are saturated hydrocarbons to find any member of the series.

: PM2.5 is defined as the mass concentration of particles in the air less than or equal to 2.5 micrometers in diameter.Question 15: False, carbon dioxide (CO2) is not considered a criteria air pollutant.

Question 16: The closest answer is 50%, but the exact percentage is not provided in the question.Question 17: The term "photochemical smog" is most synonymous with ozone (O3), which is a criteria air pollutant.Question 18: True, attainment of ambient air quality standards requires that measured concentrations at all monitoring stations within an air district are below ambient air standards.

Question 14 asks about the definition of PM2.5. PM2.5 refers to particulate matter with a diameter less than or equal to 2.5 micrometers. It represents the mass concentration of particles suspended in the air, which are small enough to be inhaled into the respiratory system and can have adverse health effects.

Question 15 states whether carbon dioxide (CO2) is a criteria air pollutant. Criteria air pollutants are a set of pollutants regulated by environmental agencies due to their detrimental impact on air quality and human health. However, carbon dioxide is not considered a criteria air pollutant because it does not directly cause harm to human health or the environment in the same way as pollutants like ozone or particulate matter.

Question 16 asks about the percentage of carbon monoxide (CO) emissions from mobile sources in Santa Clara County. While the exact percentage is not provided in the question, the closest answer option is 50%. However, it is important to note that the precise percentage may vary depending on specific local conditions and emissions sources.

Question 17 inquires about the criteria air pollutant most synonymous with the term "photochemical smog." Photochemical smog is primarily associated with high levels of ground-level ozone (O3). Ozone is formed when nitrogen oxides (NOx) and volatile organic compounds (VOCs) react in the presence of sunlight, creating a hazy and polluted atmospheric condition.

Question 18 addresses the concept of "attainment" of ambient air quality standards. To achieve attainment, measured concentrations of pollutants at all monitoring stations within an air district must be below the established ambient air quality standards. This ensures that the air quality in the given area meets the required standards for protecting human health and the environment.

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Answer:

1.

a. Sodium

b.Hydrogen

c Carbon

d Oxygen

2.

a He

b S

c Cu

d Pb

Answer:

1.

a. Sodium

b.Hydrogen

c Carbon

d Oxygen

2.

a He

b S

c Cu

d Pb

Explanation:

Hope this will help

The compounds that will ionize in water include \(H_2SO_4\), \(NaCl\), and \(MgBr_2\). Options 1, 3, and 5.

Ionic compounds are compounds that are formed when two ions become bonded together by ionic bonding. One of the ions is positively charged and is referred to as the cation while the other is negatively charged and is referred to as the anion.

The compound in itself is neutral, however. But when they are dissolved in water, they ionize into their respective ionic components.

Ionic compounds are usually formed between metals and non-metals. The metals, being always ready to lose electrons, form the cation while the non-metals, being always ready to gain electrons, form the anion. Hydrogen behaves like metal because of its readiness to donate an electron.

Thus, from the available options, the compounds that will ionize in water are  \(H_2SO_4\), \(NaCl\), and \(MgBr_2\).

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Answer: 1,2,5

Explanation: Egde 2023

Answer:

Mechanical weathering breaks rocks into smaller pieces without changing their composition. … Chemical weathering breaks down rocks by forming new minerals that are stable at the Earth's surface. Water, carbon dioxide, and oxygen are important agents of chemical weathering.

Explanation:

brainlist me pls and I'm right, correct me if I'm wrong

Answer:

Mechanical weathering reduces the size of rocks without altering their content.

Chemical weathering damages rocks by creating new materials that are stable on earth's surface.

The atomic number of vanadium is 23.

Explanation:

elctronic configuration of manganese

Mn=1s²2s²2p⁶3s²3p⁶4s²3d⁵

ground state

Mn=Ar3d⁵4s²

note that Ar is argon

When 52.0140 grams is added to 50.71 grams, the result is 102.72 grams.

When adding or subtracting numbers, it is important to consider the number of decimal places or significant figures in each value to determine the appropriate number of decimal places in the result.

In this case, we have 52.014 grams and 50.71 grams. Since the number 50.71 grams has the fewest decimal places (two decimal places), we need to round the result to two decimal places.

Adding 52.0140 grams to 50.71 grams gives us a result of 102.7240 grams. However, since we need to round to two decimal places, the final result is 102.72 grams.

Therefore, reported to the correct number of significant figures, the result when 52.0140 grams is added to 50.71 grams is 102.72 grams.

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2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

Let's denote the number of liters of the 80% acid solution to be added as x.

To determine the amount of acid in the resulting solution, we can calculate the sum of the acids in the initial solutions and set it equal to the acid in the final solution.

The acid in the 80% solution (0.80x) added to the acid in the 20% solution (0.20 × 4 liters) should be equal to the acid in the final 40% solution (0.40 × (4 + x) liters).

This can be expressed as:

0.80x + 0.20 × 4 = 0.40 × (4 + x)

Simplifying the equation:

0.80x + 0.80 = 1.60 + 0.40x

Combining like terms:

0.80x - 0.40x = 1.60 - 0.80

Simplifying further:

0.40x = 0.80

Dividing both sides by 0.40:

x = 2

Therefore, 2 liters of the 80% acid solution must be added to 4 liters of the 20% acid solution to obtain a 40% acid solution.

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Answer:

Explanation:

d i think but im not sure