how many protons, neutrons, and electrons are found in a neutral atom of hydrogen -3

Answer:

Adding Na3PO4(s) will introduce more PO4^3- ions into the solution, which will react with H3O+ ions to form more H3PO4 and H2O through the reverse reaction. This will shift the equilibrium to the left, decreasing the concentration of H3O+ ions and increasing the concentration of H3PO4 and H2O. Therefore, the concentration of H3O+ ions will decrease, and the correct answer is (C) H3O+.

Answer:

Water is a solvent.

Explanation:

What is solvent? Solvent is substance, ordinarily a liquid, in which other materials dissolve to form a solution.

Aerobic organisms must have oxygen in order to develop, breathe, metabolize, and use other vital routes. At the end of the electron transport chain during respiration in these organisms.

oxygen acts as an electron acceptor. Hence, when an obligatory aerobe is incubated in anaerobic conditions, they are unable to grow because there is no oxygen present, which in turn restricts its respiration and metabolism.

An electron is a subatomic particle with a negative charge that orbits the nucleus of an atom. It has a relative mass of 9.109 x 10⁻³¹ kg, which is about 1/1836th the mass of a proton. Electrons are responsible for the chemical behavior of atoms, as they are involved in the formation of chemical bonds between atoms. They also play a crucial role in electricity and magnetism, as they are the carriers of electrical charge and can produce magnetic fields. Electrons exist in energy levels around the nucleus, and they can absorb or emit energy to move between energy levels, giving rise to the emission and absorption of light and other electromagnetic radiation. Electrons are also used in various technologies, including electronics, telecommunications, and medical imaging.

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Group C : 32.1°C , 31.9°C, 31.8°C makes the most precise measurements of the object's temperature.

Precision :The degree of similarity between study results of the experiment if they were performed today under comparable conditions.

If repeated measurements yield similar results, the measurement is considered precise (or repeated surveys).

It means how closely all the results are related .

Therefore, there should be less difference between the measurements of all the results.

In option (a) , there is a difference of 1° in all the results.

In option (b) , there is a difference of approximately 1.5° in all the results.

In option (c), there is only 0.2° difference in all the results.

In option (d) , there is a difference of 3° in all the results.

Therefore, All the option of group (c) are closely related.

Hence, Group (c) 32.1°C, 31.9°C, 31.8°C makes the most precise

measurements of the object's temperature.

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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).

The magnification of the magnifying glass is approximately 1.44.

To calculate the magnification of the magnifying glass, we can use the formula:

Magnification = (image distance) / (object distance)

In this case, the magnifying glass is held 10.4 cm from the mole, so the object distance (d₀) is 10.4 cm. The focal length (f) of the magnifying glass is given as 15.0 cm.

Using the formula, we can calculate the magnification (M):

M = (image distance) / (10.4 cm)

The magnification of a magnifying glass is typically assumed to be the ratio of the image distance to the least distance of distinct vision (25 cm for a relaxed eye). Therefore, we need to find the image distance (dᵢ) in terms of the least distance of distinct vision.

Using the lens formula: 1/f = 1/d₀ + 1/dᵢ

We can rearrange the formula to solve for the image distance (dᵢ):

1/dᵢ = 1/f - 1/d₀

Substituting the given values:

1/dᵢ = 1/15 cm - 1/10.4 cm

Calculating the result:

1/dᵢ ≈ 0.0667 cm⁻¹

dᵢ ≈ 15 cm

Now we can substitute the values for image distance (dᵢ) and object distance (d₀) into the magnification formula:

M = 15 cm / 10.4 cm

Simplifying the calculation:

M ≈ 1.44

Therefore, the magnification of the magnifying glass in this scenario is approximately 1.44.

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Using the standard curve provided, we can use the equation y = mx + b, where y is the glucose level in mg/dl and x is the absorbance value. The slope of the line is 0.0071 and the intercept is 0.0514.

Plugging in x = 0.7, we get: y = 0.0071(0.7) + 0.0514 = 0.05647 mg/dl

Rounding to the nearest whole number, we get that person A's blood glucose level is 0 mg/dl. However, it is important to note that this may not be an accurate result as it falls outside of the range of the standard curve provided.

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Answer:

Physicol properties can be extensive or intensive. Extensive properties vary with the amount of the substance and include mass, weight, and volume

Explanation:

%Mass

Ar C = 12 g/mol, Mr C₄H₁₀ = 58 g/mol, Ar H = 1 g/mol

\(\tt C=\dfrac{4.12}{58}\times 100\%=82.8\%\\\\H=100\%-82.8\%=17.2\%\)

or

\(\tt H=\dfrac{10.1}{58}\times 100\%= 17.2\%\)

When a racemic mixture reacts with a single enantiomer of another compound, then a pair of diastereomers are formed.

A racemic mixture is an equimolar composition of enantiomers are optically inert. On the right side and the left side of the enantiomer in a chiral molecule, they contain an equal amount.

Now, in an organic reaction:

When a racemic mixture reacts with a single enantiomer of another compound, two compounds are formed and their formation possesses the different configurations on each side. Hence, a pair of diastereomers are formed.

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Answer:

its horizon O

Explanation:

When the o is h is horizon O

In the chemical reaction, NAD+ is reduced to NADH.

In the given chemical reaction, glyceraldehyde-3-phosphate is being oxidized, while NAD+ is being reduced. NAD+ (nicotinamide adenine dinucleotide) is a coenzyme that acts as an electron carrier in redox reactions. During the reaction, NAD+ accepts two electrons and a hydrogen ion (H+) to form NADH.

The oxidation of glyceraldehyde-3-phosphate results in the transfer of electrons to NAD+, leading to its reduction. As a result, NAD+ is converted to NADH, which now carries the extra electrons and a hydrogen ion.

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The Rf value is lower, it indicates a more polar compound, while a higher Rf value indicates a less polar compound.

Before diving into the details of the experiment, let's define the terms involved:

1. Analytical equipment: Instruments used to analyze substances or samples.
2. Bottom flask: A round-bottom flask is a type of laboratory glassware with a spherical body and a long neck, used in chemical reactions.
3. Starting materials: The initial substances used in a chemical reaction.

In your experiment, you're using TLC (Thin Layer Chromatography) to monitor the progress of a reaction. Initially, both the starting material lane (left) and the reaction lane (right) show the same two spots because the reaction has not progressed, and the starting materials are still present in both lanes.

After advancing the reaction by 15 minutes, you might see a new spot on the TLC plate, indicating the formation of a product. The size of the starting material spots might have decreased, which means some starting materials are being consumed in the reaction.

To determine the completion of the reaction, continue monitoring it with TLC measurements until the starting materials are no longer observed. The time it takes for this to happen will depend on the specific reaction.

The Rf (Retention Factor) values for the starting materials and product can be calculated using TLC results. Comparing these values will give you insights into the relative polarities of the starting materials and the product. Generally, if the Rf value is lower, it indicates a more polar compound, while a higher Rf value indicates a less polar compound.

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Explanation:

Metallic bond, force that holds atoms together in a metallic substance

The rust is not formed in test tube 1 since the Gibbs free energy of the products is higher without water being present. Hence, the justified option is C.

The Gibbs free energy of the product is greater when water is present. The given chemical reaction can be represented as:

                         4 Fe(s) + 3O₂(g) → 2Fe₂2O₃(s)

                          ΔG°rxn = -1800 kJ/mol

As the reaction is spontaneous (ΔG°rxn is negative), the reaction proceeds with a release of energy. This implies that the formation of rust in the second test tube shows that the reaction is thermodynamically favored. The student's observation demonstrates that the presence of water has accelerated the reaction, which is consistent with the proposed reaction mechanism in which water is required for oxygen to diffuse to the iron surface.

Gibbs free energy is the difference between the energy of the products and the reactants, so a negative Gibbs free energy indicates that the energy of the products is less than the energy of the reactants. As a result, if water is not present, the Gibbs free energy of the products would be greater than when water is present.

Therefore, the rust is not formed in test tube 1 since the Gibbs free energy of the products is higher without water being present. Hence, the justified option is C. The product is not formed in measurable quantities because the equilibrium constant for the reaction when water is not present is less than one.

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Answer: I think it is ‘Genetically diverse’

Explanation:

When 500g of acetylene is burned, 24174.3472kj of heat is released.

Given ,

In an oxyacetylene torch, acetylene gas (ethyne; HCCH) burns to produce carbon dioxide and water vapour.

The acetylene combustion reaction is given by,

H2O + HCCH + 5/2 O=O 2CO2

Heat of reaction for acetylene combustion = 1259kj/mol

We are aware,

Acetylene has a molecular mass of 26.04g/mol.

The amount of energy released by the combustion of 26.04g acetylene is 1259kj.

the amount of energy released by the combustion of 500g of acetylene

500g/26.04g = 24174.3472kj = 1259kj/mol

As a result, when 500g of acetylene burns,24174.3472kj of heat is released.

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To determine whether the forward reaction is exothermic or endothermic, we need to analyze the change in the concentration of nitrogen dioxide with respect to temperature.

If the concentration of nitrogen dioxide increases as the temperature increases, it indicates that the forward reaction is endothermic. Conversely, if the concentration decreases with increasing temperature, the forward reaction is exothermic.

In this case, we observe that as the temperature increases from 25 °C to 100 °C, the concentration of nitrogen dioxide increases from 20% to 90%. This suggests that the forward reaction is endothermic.

The reason for this behavior lies in Le Chatelier's principle, which states that a system at equilibrium will adjust to counteract any change imposed upon it. In an endothermic reaction, heat is absorbed from the surroundings to drive the reaction forward. Increasing the temperature will shift the equilibrium towards the products to absorb more heat, resulting in a higher concentration of nitrogen dioxide.

Therefore, based on the increase in nitrogen dioxide concentration as the temperature rises, we can conclude that the forward reaction is endothermic.

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Answer:

4

Explanation:

Having the coefficient 4 in front of HCl and the coefficient 2 in front of H₂O balances out the equation.

Answer:

Same i have headaches daily, maybe from infections such as meningitis or Intracranial pressure that's either too high or too low or id.k.

Answer:

When you are in the laboratory and take a direct sniff the chemicals you are using, you run the risk of damaging your mucous membranes or your lungs. When its necessary to smell chemicals in the lab, the proper technique is to cup your hand above the container and waft the air towards your face.

Gas is a naturally odourless substance, but the completely harmless artificial smell is added to make it more detectable. The substance is called mercaptan and gives off a strong sulphur like smell.

Answer:

Diagram B shows the correct arrangement of electrons in the product.

Magnesium reacts with fluorine to form magnesium fluoride two electrons of magnesium are transferred to the 2 atoms of fluorine and fluorine is the most electronegative element of the periodic table. Option C is correct.

Electronegativity is the tendency or power of an atom to attract the electrons from the metals they are mostly nonmetals and want to complete their octave too.

The most electronegative elements of the periodic table are oxygen, nitrogen, and fluorine, as they are always willing to complete the octave, and fluorine will take electrons from magnesium.

Therefore, Option C is correct if the 2 atoms of fluorine and fluorine are the most electronegative element of the periodic table. Magnesium reacts with fluorine to form magnesium fluoride two electrons of magnesium are transferred.

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When the hematite particles rearrange to form a new substance", this statement describes chemical change.

A chemical change is a change of materials into another, new materials with different properties and one or more than one new substances are formed.

As a chemical changes is usually a change where a substance undergoes a chemical change and forms a new substance; which cannot be easily reversed into reactants by any simple physical methods.

In this example the hematite ore forms a new substance by an irreversible chemical change.

Hence, "The hematite particles rearrange to form a new substance", this statement describes chemical change.

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The treatment for magnesium poisoning involves slowly injecting 10mL of calcium gluconate (2.2mmol of calcium in a 10mL vial; formerly known as 10% solution) into the vein over the course of 10 minutes.

What are the symptoms and treatment for magnesium sulfate toxicity?

Early symptoms of magnesium toxicity include nausea, feeling heated, flushing, somnolence, double vision, slurred speech, and weakness. The first sign of magnesium toxicity is typically the loss of patellar reflexes, which happens with serum magnesium levels of 9 mg/dl to 12 mg/dl.

What symptoms indicate toxicity from magnesium sulfate?

Keep an eye out for the warning signs and symptoms of magnesium sulfate toxicity, such as hypotension, areflexia (loss of DTRs), respiratory depression and arrest, oliguria, shortness of breath, chest pains, slurred speech, hypothermia, confusion, and circulatory collapse.

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Step 1

The reaction involved here:

3 FeO + 2 Al => 3 Fe + AI2O3 (Don't forget to completed it and balance it)

---------------

Step 2

Data provided:

125 grams of FeO react with 25.0 grams of AI

--

Data needed:

The molar masses of:

FeO) 71.8 g/mol

Al) 27.0 g/mol

Fe) 55.8 g/mol

---------------

Step 3

The limiting reactant:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

3 x 71.8 g FeO ----- 2 x 27.0 g Al

125 g FeO ----- X

X = 125 g FeO x 2 x 27.0 g Al/3 x 71.8 g FeO

X = 31.3 g Al

For 125 g of FeO, 31.3 g of Al is needed, but there is 25.0 g of Al, so the limiting reactant is Al.

-------------

Step 4

The amount of Fe produced:

By stoichiometry,

3 FeO + 2 Al => 3 Fe + AI2O3

2 x 27.0 g Al ---- 3 x 55.8 g Fe

25.0 g Al --- X = 77.5 g Fe

Answer: 77.6 g Fe (the closest value)

Answer:

Explanation: