Which statement properly describes the bromination of an alkene with respect to the oxidation state of the alkene?.

Answer:  The correct answer is:  " 0.54 g " .

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Explanation:

Note that "hydrogen gas" is:  

H₂ (g)  ;   that is:  a "diatomic element" (diatomic gas) ;

_________________________________________

The molecular weight of "H" is:  1.00794 g ;

   (From the Periodic Table of Elements).

So, the molecular weight of:  H₂ (g)  is:

    " 1.00794 g * 2  = 2.01588 g ; {use calculator) ;

_________________________________________

Note the conversion for a gas at STP:

______

  1 mol of a gas = 22.4 L gas;

___

i.e. " 1 mol / 22.4 L " ;

____

So:     " 5.7 L H₂ (g)  \(* \frac{1 mol H_{2} }{22.4 L} *\frac{2.01588 g}{mol} =? ;\)

The "L" ("literes" cancel out to "1" ;  since "L/L = 1 ;

The "mol" (moles) cancel out to "1" ; since "mol/mol = 1 ;

____

and we are left with:

____

 [5.7 * 2.104588 g ] / 22.4  =  ?  g ;

______________________

→ [ 11.9961516  g ] / 22.4 =

          0.53554248214  g ;l

_____________________________

We round this value to:  " 0.54 g " ;

 → since "5.7 L " has 2 (two) significant figures;  

     22.4 is an exact number conversion;

     and "5.7 L" has fewer significant figures than:

    " 2.104588 " ; or:  " 1.00794 " .

  → as such: We round to "2 (two) significant figures."

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Hope this is helpful.  Wishing you the best in your academic endeavors!

_______________________________

Answer:

give answer of following questions and get 35 points.

Answer:

ok so basicalkly he lloked at how the subdiction zone formed and where previus conintal drift occured

Explanation:

To determine which reactant is limiting in the reaction and the theoretical yield of iron(III) oxide, we need to compare the moles of each reactant.

First, let's calculate the number of moles of iron and oxygen in the reaction using their respective masses and molar masses:

Molar mass of Fe = 55.85 g/mol

Molar mass of O2 = 32.00 g/mol

Moles of iron (Fe) = mass of iron / molar mass of Fe

Moles of iron (Fe) = 42.3 g / 55.85 g/mol

Moles of iron (Fe) = 0.758 mol

Moles of oxygen (O2) = mass of oxygen / molar mass of O2

Moles of oxygen (O2) = 53.9 g / 32.00 g/mol

Moles of oxygen (O2) = 1.684 mol

Next, we need to determine the stoichiometric ratio between iron and iron(III) oxide in the balanced equation 4 Fe + 3 O2 → 2 Fe2O3

From the balanced equation, we can see that the stoichiometric ratio between iron and iron(III) oxide is 4:2, or simply 2:1.

Now, to determine the theoretical yield of iron(III) oxide, we use the stoichiometry of the balanced equation. From the equation, we see that 4 moles of iron react to form 2 moles of iron(III) oxide.

The moles of iron(III) oxide can be calculated as follows:

Moles of iron(III) oxide = 0.758 mol (moles of iron) × (2 mol Fe2O3 / 4 mol Fe)

Moles of iron(III) oxide = 0.379 mol.

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Answer:

2.38 g of oxygen (O2).

Explanation:

What is given?

Mass of potassium chlorate (KClO3) = 6.06 g.

Molar mass of KClO3 = 122.4 g/mol.

Molar mass of oxygen (O2) = 32 g/mol.

Step-by-step solution:

First, let's state the balanced chemical equation. Remember that the decomposition of a compound produces two or more products:

Now, let's convert 6.06 g of KClO3 to moles using its molar mass:

You can see in the chemical equation that 2 moles of KClO3 produce 3 moles of O2. By doing a rule of three with this data, we obtain that:

The final step is to convert from 0.0743 moles of O2 to grams using its molar mass, like this:

The answer is that we will produce 2.38 g of oxygen (O2) from the decomposition of 6.06 g of potassium chlorate (KClO3).

There are numerous methods for determining if the water collected in the receiving flask during the experiment is salt-free or not like taste test, conductivity test and chemical analysis.

To establish this, the experimenter may utilise one or a combination of the approaches listed below:

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Answer:

the load is between the fulcrum and the handle

Explanation:

The Group 15 element that exists as diatomic molecules at STP is Nitrogen (N2). This element is a chemical element with the symbol N and atomic number 7. It is the lightest member of Group 15 (VA) of the periodic table, sometimes referred to as the pnictogens.

Nitrogen is a common element in the Earth's atmosphere, accounting for approximately 78 percent of the air we breathe.Nitrogen is a colourless, odourless, and tasteless gas that makes up the majority of the air we breathe. At standard temperature and pressure, nitrogen is a diatomic molecule, meaning that two nitrogen atoms are chemically bonded together. Nitrogen has an atomic mass of 14.00674 u and a density of 1.251 g/L. Nitrogen is a vital component of amino acids, which are the building blocks of proteins, and nucleic acids, which are the building blocks of DNA and RNA.

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Answer:

In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed.

The molar mass of calcium hydroxide, Ca(OH)₂ is 74.10 g/mol. The moles of the K₂SO₄ is 0.086 mol . The grams of the glucose is 639 g.

The molar mass of the Calcium oxide , Ca(OH)₂ is :

Ca(OH)₂ = 40 + 2( 15.99 + 1 )

              = 74.10 g/mol

The moles of the  K₂SO₄ in the 15 g of the  K₂SO₄ :

Moles = mass / molar mass

Moles = 15 / 174.25

Moles = 0.086 mol

The moles of the glucose, C₆H₁₂O₆ = 3.55 mol

The mass of the glucose = moles × molar mass

                                         = 3.55 × 180

                                         = 639 g

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Answer:

synergy

Explanation:

when two substances combine effects to be greater than just their sum of their individual effects

Antibodies against nicotinic acetylcholine receptors (nAChR), present at neuromuscular junction (NMJ), can affect function of junction by interfering with normal signaling between nerve and muscle.

Antibodies against nicotinic acetylcholine receptors (nAChR), which are present at neuromuscular junction (NMJ), can affect the function of junction by interfering with normal signaling between nerve and muscle.

At NMJ, the nerve terminal releases acetylcholine (ACh), which binds to nAChR on muscle cell membrane, leading to depolarization of muscle cell and muscle contraction. If antibodies bind to nAChR, they can block or reduce the number of available receptors for ACh, leading to decrease or even complete loss of the normal muscle response to nerve stimulation.

This can result in muscle weakness, fatigue, and even paralysis, depending on the severity of antibody binding and amount of functional nAChR remaining at the NMJ.

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The balanced titration reaction for the given reaction involving 0.0100 M Sn2+ in 1 M HCl with 0.0500 M Tl3+ is as follows:

2 Sn2+ (aq) + 3 Tl3+ (aq) → 2 Sn4+ (aq) + 3 Tl+ (aq)

The balanced titration reaction for the titration of 20.00 ml of 0.0100 m Sn2 in 1 m HCl with 0.0500 m Tl3 resulting in the formation of Sn4 and Tl can be written as:

2 Sn2+ + 2 Tl3+ + 2 H+ → 2 Sn4+ + 2 Tl+ + H2

The Pt indicator electrode and the saturated Ag|AgCl reference electrode are used to monitor the titration process.

1. Identify the reactants: Sn2+ and Tl3+
2. Identify the products: Sn4+ and Tl+
3. Balance the charges: 2 Sn2+ ions have a total charge of +4, while 3 Tl3+ ions have a total charge of +9. To balance the charges, multiply Sn2+ by 2 and Tl3+ by 3.
4. Write the balanced equation: 2 Sn2+ (aq) + 3 Tl3+ (aq) → 2 Sn4+ (aq) + 3 Tl+ (aq)

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Answer:

\(^{}\)nk to the answer:

ly/3fcEdSx

bit.\(^{}\)

Explanation:

Answer:

owaowa

Explanation:

what is the question. is there no question or is this just free points?

Explanation:

Answer: D) Sodium Chloride is dense, soluble in water, brittle, ionic lattice, high melting point.

Answer: The alkyne

Explanation:

Answer:

the alkyne

Explanation:

Hope it helps u

FOLLOW MY ACCOUNT PLS PLS

Answer:

The coefficient is the number of molecules and the subscript is the number of atoms

Explanation:

You can change the coefficient to balance an equation but, never touch the subscript. It cannot be changed.

Electronegativity for boron is 2.0, and electronegativity for fluorine is 4.0. which type of bond forms between boron (B) and fluorine (F) in BF₃ is non polar covalent bond.

The  BF₃ is the covalent molecule. the electronegativity for boron is 2.0 and the electronegativity for the fluorine is 4.0 . the boron has 3 valence electrons and need 5 more to complete the octet and fluorine has 7 valence electrons . thus boron form three covalent bond with the atom of fluorine and try to complete the octet.

The  BF₃ is a triangular planar molecule. the dipole moment in the  BF₃ molecule is zero therefore  BF₃, boron trifluoride is a non polar covalent molecule.

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Answer:

variable

Explanation:

While visiting his uncle's farm, Derek learned that horses and donkeys are two different species. Based on this information, Derek can infer that horses and donkeys are members of different populations.


Since horses and donkeys are different species, they belong to different populations. A population refers to a group of individuals of the same species that live in the same area and can interbreed. While horses and donkeys can mate, their offspring, known as mules, are usually infertile.

This means that mules cannot produce offspring of their own, which indicates that horses and donkeys are not members of the same population. In contrast, if they were members of the same population, they would be able to produce fertile offspring. Therefore, Derek can infer that horses and donkeys are members of different populations.

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Answer: Nobel gases

i dont know what the options were but i hope that helped

The first step in this calculation is to know how many liters is equal to 1 gallon, and the value is 3.785 liters, so now we have to make the following calculation:

1 gal = 3.785 Liters

30.0 gal = x Liters

x = 3.785 * 30.0

x = 114 Liters

Answer:

three 3

Explanation:

oxygen, sulphur and hydrogen.

1. Indicate the texture of each of the following igneous rocks, explaining how it was formed to have such a texture:

a. Gabbro: Gabbro has a coarse-grained texture, formed through the slow cooling and crystallization of magma beneath Earth's surface. This slow cooling allows for the growth of large, interlocking mineral crystals.

b. Massive Basalt: Massive basalt has a fine-grained texture due to its rapid cooling and solidification on or near Earth's surface. The rapid cooling doesn't allow enough time for large crystals to form.

c. Porphyritic granite: Porphyritic granite has a mixed texture, featuring both large and small crystals. It forms when magma cools slowly at first, allowing the formation of large mineral crystals, followed by a more rapid cooling that forms smaller crystals around the larger ones.

d. Obsidian: Obsidian has a glassy texture, formed when lava cools rapidly without the time for crystal growth. The rapid cooling leads to a smooth, amorphous rock without a defined crystal structure.

e. Pumice: Pumice has a vesicular texture due to the gas bubbles trapped within the rock during the rapid cooling of frothy, gas-rich magma. The gas bubbles give pumice its lightweight and porous nature.

f. Amygdaloidal: Amygdaloidal rocks have a vesicular texture with secondary mineral growth, formed when gas bubbles within the rock are later filled with secondary minerals, such as quartz or calcite, through the process of mineralization.

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Answer:

c i think

Explanation:

Answer:

Rise surface fall surface rise

Explanation:

Hope this helps!

Answer:

P4O6 is the formula

Explanation:

I hope I could help

Yes, species of Pfiesteria need to be controlled even if they are not considered to be harmful for any cause.

Pfiesteria are known to be linked to kill fishes, such as the significant fish kill in North Carolina's oceans. Additionally, it leads to massive algal blooms that make it difficult for fish and other marine life to survive in the water bodies. It has an impact on people as well since it releases pollutants into the air and water, which frequently causes respiratory issues, gastrointestinal illnesses, headaches, and weariness. There is an urgent need to regulate in these types of serious circumstances that cause the population of Pfiesteria to explode.

The well-known fish killer Pfiesteria piscicida from the American Atlantic coast was located using genetic techniques and light microscopy. The presence of fish in the sediment attracted the related species Pfiesteria shumwayae and has proved to be toxic.

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