the column of smoke (mostly water vapor) billowing from the huntington beach electrical plant smokestacks levels off at a particular altitude because

Mass of water produced is equal to 7.2 grams.

The reactants are reacting according to the following equation:

HBr + NaOH = NaBr + H2O

1 mole of HBr requires 1 mole of NaOH to be totally transformed into NaBr and water.

Now, let us calculate the amounts of HBr and NaOH in mols:

m(HBr) = 67.2g

m(NaOH) = 16g

M(HBr) = 80.9g/mol

M(NaOH) = 40g/mol

Following the simple relation

n(moles) = m(grams)/M(g/mol)

n(HBr) = 67.2g/(80.9g/mol)

n(NaOH) = 16g/(40g/mol)

n(H2O) = n(NaOH) = 0.40 mol, which is:

m(H2O) = n(H2O) x M(H2O)

0.40mol∗18g/mol=7.2g

Finally, the mass of water produced is equal to 7.2 grams.

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Answer:

Matter is composed of indivisible building blocks. ... The Greeks called these particles atomos, meaning indivisible, and the modern word “atom” is derived from this term. Democritus proposed that different types and combinations of these particles were responsible for the various forms of matter.

I hope this helped

Answer:

0.12g

Explanation:

Volume = 5x3x10 = 150 cm cubed

Mass = 150x100 = 15000 grams

Density = 15000/150 = 100g/cm cubed

The correct answer is: It is oxidized. Oxidation number (also known as oxidation state) is a concept used in chemistry to describe the hypothetical charge that an atom would have if all its bonds were completely ionic.

In the given redox reaction, which can be represented as:

ClO3- + Cl- → Cl2

The chlorine in ClO3- is being reduced, while the chlorine in Cl- is being oxidized. Let's analyze the changes in Oxidation number for chlorine in this reaction:

Oxidation state of chlorine in ClO3- (chlorate ion) is +5.

Oxidation state of chlorine in Cl- (chloride ion) is -1.

In the reaction, the chlorine in ClO3- is reduced to chlorine gas (Cl2), where the oxidation state of chlorine changes from +5 to 0. This means that chlorine in ClO3- is being reduced or its oxidation state is decreasing.

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Answer:

it's rn and the atomic number is 86 if u needed that

Explanation:

:)

Answer:

69, 7 ,89,9,88 atomic numbers

The mass of NaCl would be required to prepare this solution is measured as 251.3 g

Volume of the solution = 2.00 L

Molarity of the solution = 2.15 M

Mass of NaCl needed = molarity  × volume × molar mass

                                   = 2.15 × 2 × 58.44 g

                                   = 251. 292 g

                                   = 251. 3 g

Steps of formation of solution :

Step 1 :  Measure out the desired amount of NaCl  .

Step 2 :  Add the measured NaCl into 2.00 L volumetric flask  .

Step 3 :  partially filled the flask with water .

Step 4 :   Mix until NaCl dissolve completely .

Step 5 :   Dilute the solution , slowly by water until desired volume is reached.  

Three steps are envisioned energetically for the solid's dissolution into a solvent to form a solution. Step 1: the process of breaking a pure solid into smaller pieces. Step 2: Division of unadulterated dissolvable into isolated particles. Step 3: creating a solution by combining the particles.

The straightforward response is that the solute and solvent must have comparable intermolecular interactions. When this is the case, the solvent and solute can easily mix so tightly that each solute particle is surrounded by other solute particles, creating a solution.

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Answer: Chloride and Chromate ions

Explanation:

Two anions used in this lab to perform selective precipitation of the unknowns are chloride and chromate ions.

Anions such as  Cl− ,  Br− ,  SO2−4 ,  CO2−3 ,  S2− ,  Cr2O2−4 ,  PO2−4 ,  OH−  etc., forms a mixture of metal ions in a solution which can be separated by precipitation. If a metal ion or a group of metal ions forms insoluble salts with a particular anion, then they can be separated from others by the precipitation.

Anions can also be separated by the precipitation with appropriate metal ions. There are no separation lines between insoluble salts, sparingly soluble, and soluble salts, but their concentrations of saturated solutions are small, medium, and large. For insoluble and sparingly soluble salts, solubility products are usually listed. But for soluble salts they are not given.

Solubility products for soluble salts are very large.

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Answer:

zn +2Agno3= Zn(No3)2 +2Ag

Answer:

Explanation:

Here, we want to identify the reducing and the oxidizing agent

The reducing agent is the one that undergoes oxidation while the oxidizing agent is the one that undergoes reduction

While oxidation refers to the loss of electrons, reduction is the gain of electrons

By looking at the componets that gained or loss electrons,we can idenify the oxidizing or reducing agent

From what we have in the guestion, sulfuric acid is the oxidiszing agent as it is the one that undergoes reduction.

Option A, ridge formation where cold matter in the mantle is sinking, could be included in an accurate model of thermal convection in Earth's interior.
Thermal convection refers to the transfer of heat energy through the movement of fluids due to temperature differences. In the case of Earth's interior, the heat generated by the core is transferred to the surface through the movement of molten rock in the mantle. This movement is driven by differences in temperature and density of the molten rock.

Option A, ridge formation where cold matter in the mantle is sinking, is a key aspect of this process. At mid-ocean ridges, new oceanic crust is formed as magma rises up from the mantle and solidifies. As this new crust cools, it becomes denser and sinks back down into the mantle, pulling the surrounding cooler rock with it. This sinking motion creates a convection current that helps to transfer heat from the core to the surface.
Option B, seafloor spreading where convection currents meet, is also related to thermal convection in Earth's interior. However, this process occurs at the boundaries between tectonic plates, where the movement of molten rock drives the spreading of the seafloor. While this process is related to thermal convection, it is not a direct part of the movement of molten rock in the mantle.
Option C, subduction where tectonic plates are moving apart from one another, is not related to thermal convection in Earth's interior. Instead, subduction occurs when one tectonic plate is forced beneath another, which is driven by the movement of molten rock in the mantle.
Option D, earthquakes where hotter matter is sinking beneath colder matter, is also not directly related to thermal convection. While earthquakes can occur as a result of the movement of molten rock in the mantle, they do not contribute to the overall transfer of heat from the core to the surface.

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The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.The hybridization change that occurs for phosphorus in the reaction PCl3 + Cl2 → PCl5 is sp3 → sp3d.PCl3 + Cl2 → PCl5The above reaction is a balanced chemical equation.

The phosphorus (P) atom in PCl3 has a hybridization of sp3, whereas the Cl2 molecule has a hybridization of sp2. During the formation of PCl5, there is a hybridization change in the phosphorus atom from sp3 to sp3d.A change in the hybridization of an atom occurs when it is involved in a chemical reaction. The changes in hybridization occur due to the difference in electronegativity of the atoms in the reactants or due to the bond formation.

For instance, in the reaction PCl3 + Cl2 → PCl5, the reaction occurs due to the formation of a covalent bond between the P atom in PCl3 and Cl atom in Cl2. This causes the electrons in the 3p subshell of the P atom to undergo excitation, resulting in the hybridization change from sp3 to sp3d.Hence, the correct answer is sp3 → sp3d.

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Answer:

Solid ionic compounds do not have electrical conductivity because the ions are not free to move. In a liquid, the ionic compound dissociates into its respective ions.

Answer: yes, it depends on the substance though

Explanation:

Answer:To calculate the molar mass, first calculate the number of moles of gas using the ideal gas equation. 1 atm. 750 mmHg. (1.00 L). 760 mmHg. 0.0306 mol. L atm.

Explanation:

Answer:

A. Antibiotic resistance can sometimes be shared among bacteria.

B. Mutation can cause antibiotic resistance.

D. Antibiotics killing bacteria while allowing mutated bacteria to live is an example natural selection.

Explanation:

Identifying: Archaea have cell walls that lack peptidoglycan and have membranes that enclose lipids with hydrocarbons rather than fatty acids (not a bilayer). ... Bacteria: cell membrane contains ester bonds; cell wall made of peptidoglycan; have only one RNA polymerase; react to antibiotics in a different way than archea do.

Hope this helps, I reported some answer that was absurd, not applicable, incomplete and confusing

Mutation can cause antibiotic resistance, Bacteria that become resistant are an example of evolution. Antibiotics killing bacteria while allowing mutated bacteria to live is an example natural selection The correct options are B, D, and C.

Archaea, like bacteria, lack interior membranes but have a cell wall and swim with flagella.

Archaea differ from bacteria in that their cell wall lacks peptidoglycan and their cell membrane contains ether linked lipids rather than ester linked lipids.

The dispersion of antibiotic resistance in pathogenic bacteria is a simple and elegant example of natural selection at work.

Bacteria can develop antibiotic resistance through mutations that alter antibiotic cellular targets or by acquiring dedicated resistance genes from other bacteria.

Antibiotic resistance can be caused by mutation; bacteria that become resistant are an example of evolution. Natural selection is demonstrated by antibiotics killing bacteria while allowing mutated bacteria to live.

Thus, B, D, and C are correct options.

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The cube root of a number is the reverse of the cube of a number and it can be found by prime factorization method. The cube root of 8000 is 20.

Prime Factorization is the finding which prime numbers multiply together to make the original number. A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number.

Prime factorization of 8000 is 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5

Simplifying the above expression: \(2^{6}\) * \(5^{3}\)

Simplifying further: \(20^{3}\)

Therefore, the cube root of 8000 by prime factorization is (2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5)1/3 = 20.

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Answer:

Explanation:

The net ionic equation is essentially the most simplified version of a reaction with only the reactants that form the precipitate (the solid). Due to this it is extremely important to properly write your ionic equation first. In your total ionic equation, you forgot to balance the compounds with 2- charges.  The coefficients in your equation is due to the 2- charge of sulfate and 2+  charge of Strontium. Additionally, precipitates are solid which means they do not dissociate. SrSO4 will stay together while KBR which are both spectator ions will dissociate leaving you with the ionic equation below.

Total Ionic Equation: Sr^2 (aq)+  + 2Br ^1- (aq) +2K ^ 1(aq) +  SO4 ^2- (aq) --> SrSO4 (s) + 2K^1+ (aq) + 2Br^1- (aq)

The coefficient of 2 on both K and Br in the products is to ensure that the equation is balanced and that for your net ionic equation, all spectator ions cancel. When you cancel all of the ions that dissociate you are left with the essence of the reaction:

Net Ionic Equation:  Sr^2 (aq) + SO4 ^2- (aq) --> SrSO4 (s)

Answer:

Rate cup 1: 36.00 tsp/h.

Rate cup 2: 59.50 tsp/h.

Rate cup 3: 70.13 tsp/h.

Explanation:

Based on the given example, the units must be in tsp/hour. To do this we just have to divide tsp by seconds and then convert it to hours remembering that 1 hour equals 3600 seconds.

Let's calculate each case:

- Cup 1: 1 tsp, 1 minute 40 seconds. Remember that 1 minute equals 60 seconds, so 1 minute and 40 seconds equals 100 seconds. The calculation of the rate will look like this:

The rate of cup 1 is 36.00 tsp/h.

- Cup 2: 2 tsp, 2 minutes 1 second. As we saw before 1 minute equals 60 seconds, so 2 minutes equals 120 seconds. 2 minutes and 1 second equals 121 seconds. The rate of cup 2 will be calculated as:

The rate of cup 2 is 59.50 tsp/h.

- Cup 3: 3 tsp, 2 minutes 34 seconds. 2 minutes are the same that 120 seconds, so 2 minutes 34 seconds equals 154 seconds. The rate of cup 3 is calculated as follows:

The rate of cup 3 is 70.13 tsp/h.

Answer:

0.213 J/g°C

Explanation:

To calculate specific heat of the metal, the formula is used:

Q = m × c × ∆T

Where Q = amount of heat

m = mass

c = specific heat

∆T = change in temperature

According to this question, Q = 37.7 J, m= 12.5 g, initial temperature= 19.5 °C, final temperature = 33.6°C, c=?

Q = m × c × ∆T

37.7 = 12.5 × c × (33.6-19.5)

37.7 = 12.5c × 14.1

37.7 = 176.25c

c = 37.7/176.25

c = 0.2139

Hence, the specific heat of the metal is 0.213 J/g°C

18.5 * 10² milliliters of NaCl solution have to use to deliver 18.5g of NaCl.

Given data:

1% (m/v) NaCl

For 18.5g

1g --------------------------100ml

18.5g ---------------- Xml

X = 1850ml

The mass/ volume percent of a result is defined as the rate of the mass of solute that's present in a result, relative to the volume of the result, as a whole. Because this type of attention is expressed as a chance, the indicated proportion must be multiplied by 100.

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Answer:

fractional distillation since ot depends on the different liquids to have different boiling points

a) 25.0 mL of the compound has a mass of 17.95 g.

b) The cost of this amount of the compound is $31.43 ($1.75 x 17.95 g).

Answer:

A

Explanation:

There are 16 rearrangements of abcd that no two adjacent letters are also adjacent letters in the alphabet.

We need to find out the number of rearrangements of abcd such that no two adjacent letters are also adjacent letters in the alphabet.

The number of ways in which we can arrange 4 letters is given by 4! = 24.

Let's consider the case where the first letter is 'a'. The second letter cannot be 'b' as it is adjacent to 'a' in the alphabet.

The second letter can be either 'c' or 'd'. This gives us 2 options. The third letter cannot be 'b' or 'd' as they are adjacent to 'c' in the alphabet.

The third letter can be either 'a' or 'c'. This gives us 2 options. The last letter will then be the remaining letter, giving us only one option.

Therefore, there are 2*2*1 = 4 ways to arrange the letters if the first letter is 'a'.

We can repeat this process for the cases where the first letter is 'b', 'c', or 'd'.

This gives us a total of 4*4 = 16 rearrangements where no two adjacent letters are also adjacent letters in the alphabet. Therefore, the answer is 16.

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Answer:

option 1

Explanation:

i had a test with same question

The first equivalence point in the titration of H2CO3 (carbonic acid) with LiOH (lithium hydroxide) occurs when all the H2CO3 has been converted to its conjugate base HCO3-. At this point, the primary species in solution would be HCO3- and Li+. Therefore, the correct answer is b. HCO3-.

Carbonic acid is a carbon-containing compound which has the chemical formula H2CO3. Solutions of carbon dioxide in water contain small amounts of this compound. Its chemical formula can also be written as OC(OH)2 since there exists one carbon-oxygen double bond in this compound.

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