the size of the negative charge of an electron us exactly the same as the size of the positive charge of a proton. what is the overall charge of the helium atom ​

The mass of nitric oxide produced by the reaction of 2.81 grams of ammonia is 1.59 grams.

The equation for the reaction of ammonia and oxygen to produce Nitric oxide and water is,

4NH₃ + 5O₂ → 4NO + 6H₂O

From the reaction we can see,

4 moles of ammonia = 4 moles of nitrix oxide.

Mole of ammonia = moles of nitric oxide.

Moles = reacted/formed mass/ molar mass

Molar mass of ammonia = 17 g/mol.

Molar mass of nitric oxide = 30 g/mol.

Mass of ammonia reacted = 2.81 grams.

Putting values,

2.81 x 17 = Formed mass of nitric oxide x 30

Formed mass of nitric oxide  = 1.59grams.

The mass of nitric oxide formed is 1.59 grams.

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Answer:

Double bonds

Explanation:

C is conduction

a is convention

b is radiation

From the given information, approved eye protection is to be worn for certain experiments. Eye protection is an important safety measure in laboratories and other settings where hazardous materials or equipment are used.

However, it is not necessary to wear eye protection all the time, only when it is necessary to protect the eyes from specific hazards. For example, eye protection may be required when working with chemicals that can splash or when using equipment that can produce flying debris or particles.

It is important to follow the specific safety guidelines and regulations for your particular laboratory or workplace. These guidelines will specify when eye protection is required and what type of eye protection is appropriate for the task at hand. It is always better to err on the side of caution and wear eye protection when in doubt.

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The technique to calculate how many grams of element are produced using limiting reactant is shown.

The term "limiting reactant" refers to the reactant that is entirely consumed in a chemical reaction and restricts the quantity of product that can be produced.

1. Determine the limiting reactant by comparing the amount of each reactant to the stoichiometric ratio given in the balanced equation.

2. Use the stoichiometric ratio to calculate the number of moles of the element produced from the limiting reactant.

3. Convert the moles of the element to grams using its molar mass.

The formula is:

Grams of element produced = Moles of element produced x Molar mass of element

where Moles of element produced is calculated using the stoichiometric ratio from the balanced equation, and Molar mass of element is the atomic mass of the element in grams per mole.

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To prevent accidental vapor inhalation from volatile solvents, it is important to use Volatile solvents in a well-ventilated area with proper storage and disposal procedures for volatile solvents to prevent environmental contamination and fire hazards.

A volatile solvent is a liquid substance that has a high vapor pressure at room temperature. This means that the solvent evaporates quickly and easily, producing vapors that can be inhaled or ignite with a spark. Examples of volatile solvents include acetone, ethanol, and methanol.

To prevent accidental vapor inhalation from volatile solvents,

In conclusion, the inhalation of volatile solvents can pose health hazards such as respiratory irritation, intoxication, and central nervous system depression. To prevent accidental inhalation, it is important to use these solvents in a well-ventilated area, wear appropriate PPE and also follow proper storage and disposal procedures for volatile solvents.

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They are classified on the basis of their physical features- Shape and Appearance.

The four basic shapes of bacteria are Coccus (spherical or ovoid), bacillus (rod-like), vibrio (comma-shaped ), and spirilla (spiral or helical shaped).

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Answer:

the answer is 2.34 x 10^2

Answer:

CuO + Zn → ZnO + Cu

Explanation:

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The following statements about strong acids are true:

The conjugate base of a strong acid has negligible acid-base properties.

All strong acids do not have the same strength.

What is Proton?

A proton is a subatomic particle that has a positive charge and is found in the nucleus of an atom. Its mass is approximately 1 atomic mass unit (amu), which is roughly 1.67 x \(10^{-27}\) kg. The number of protons in an atom's nucleus determines the element it represents. For example, all atoms with six protons in their nucleus are carbon atoms. The number of protons in an atom is also known as its atomic number.

They produce stable ions that have little tendency to accept a proton.

They lower the pH of a solution by increasing the concentration of hydronium.

The last option in the statement is incorrect, as strong acids actually lower the pH of a solution, not raise it.

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Answer:

i think the answer is C

Explanation:

if wrong im sorry

Answer:

2 molecules

Explanation:

thete are 2 moleculed in 2NH3

The reaction you provided shows the oxidation of cadmium and the reduction of nickel.

To calculate the standard cell potential of a nickel-cadmium electrochemical cell, we need to use the standard reduction potentials of both elements. The standard reduction potential of nickel is -0.25 V, and the standard reduction potential of cadmium is -0.40 V.

Using the equation:

E°cell = E°reduction (cathode) - E°reduction (anode)

We can calculate the standard cell potential of the nickel-cadmium electrochemical cell as:

E°cell = -0.25 V - (-0.40 V) = 0.15 V

Therefore, the standard cell potential of a nickel-cadmium electrochemical cell is 0.15 V.

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On the Modified Mercalli Scale, intensity XII is described as "Catastrophic" or "Total Destruction."

Intensity XII represents the highest level of damage and destruction caused by an earthquake. It indicates that the shaking is so severe that virtually all buildings and structures experience extensive damage or complete collapse.

Ground fissures, landslides, and other significant ground deformations may also occur. Utility systems, such as water, gas, and electrical networks, are likely to be extensively disrupted or completely destroyed. Additionally, there may be widespread panic, and the overall social and economic impact can be devastating.

The Modified Mercalli Scale is a subjective scale that assesses the effects of an earthquake based on observed damage and the impact on people, structures, and the environment. It provides a qualitative description of the level of shaking and its consequences rather than relying on instrumental measurements.

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If an IV bag of 500 mL D5W is infusing at a rate of 50 mL/hr, and the IV bag was hung at 11:30 am, the infusion will be complete in 10 hours and 30 minutes.

To determine the time it takes for the infusion to be complete, we need to consider the volume of the IV bag and the infusion rate.

The IV bag contains 500 mL of D5W (5% dextrose in water). The infusion pump is set at a rate of 50 mL/hr, which means 50 mL of the solution is administered every hour.

To find the time it takes for the infusion to be complete, we divide the total volume of the IV bag (500 mL) by the infusion rate (50 mL/hr):

Time = Volume / Rate

Time = 500 mL / 50 mL/hr

Time = 10 hours

Since the IV bag was hung at 11:30 am, we add 10 hours to this time to determine when the infusion will be complete:

11:30 am + 10 hours = 9:30 pm

Therefore, the infusion will be complete at 9:30 pm.

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The numbers that balance the following equation: 4NaCl + 2SO2 + H2O + O2 → Na2SO4 + 4HCl is 2, 1, 2.

BALANCING EQUATION:

4NaCl + 2SO2 + 2H2O + O2 → 2Na2SO4 + 4HCl

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Answer:212

Explanation:yeah

Answer:

1.35×10¹² μg

Explanation:

Mass (Kg) = 1350 Kg

Mass (μg) =?

Thus, we can obtain the mass of the adult rhino in micrograms (μg) by converting 1350 Kg to microgram (μg) as follow:

1 Kg = 1×10⁹ μg

Therefore,

1350 Kg = 1350 kg / 1 kg × 1×10⁹ μg

1350 Kg = 1.35×10¹² μg

Therefore, 1350 Kg is equivalent to 1.35×10¹² μg.

Answer:

To convert 1350 kilograms to micrograms, we need to multiply by a conversion factor that takes us from kilograms to micrograms.

1 kilogram = 1,000,000,000 micrograms (by definition)

So,

1350 kilograms = 1350 x 1,000,000,000 micrograms

= 1.35 x 10^12 micrograms (in scientific notation)

Therefore, the mass of an adult rhino is 1.35 x 10^12 micrograms.

Answer:

Aluminum iodide (AlI₃)

Explanation:

The synthesis reaction of aluminum (Al) and iodine (I) can be illustrated as shown below:

Aluminium exhibit trivalent positive ion (Al³⁺)

Iodine exhibit univalent negative ion (I¯)

During reaction, there will be an exchange of ion as shown below:

Al³⁺ + I¯ —> AlI₃

Thus, we can write the balanced equation for the reaction as follow:

Al + I₂ —› AlI₃

There are 2 atoms of I on the left side and 3 atoms on the right side. It can be balance by putting 2 in front of AlI₃ and 3 in front of I₂ as shown below:

Al + 3I₂ —› 2AlI₃

There are 2 atoms of Al on the right side and 1 atom on the left side. It can be balance by putting 2 in front of Al as shown below:

2Al + 3I₂ —› 2AlI₃

Thus the equation is balanced.

The product on the reaction is aluminum iodide (AlI₃)

Answer: simple and complex.

Explanation:These are also called simple sugars. They're found in refined sugars, like the white sugar you see in a sugar bowl. If you have a lollipop, you're eating simple carbs.

Answer:

It will produce 44 grams of carbon dioxide

Explanation:

Step 1: Data given

MAss of CaCO3 = 100 grams

Molar mass of CaCO3 = 100.09 g/mol

Mass of CaO produced = 56 grams

Molar mass of CaO = 56.08 g/mol

Step 2: The balanced equation

CaCO3 → CaO + CO2

Step 3: Calculate moles CaCO3

Moles CaCO3 = mass CaCO3 / molar mass CaCO3

Moles CaCO3 = 100 grams / 100.09 g/mol

Moles CaCO3 = 1.00 moles

Step 4: Calculate moles CaO

Moles CaO = 56 grams / 56.08 g/mol

Moles CaO = 1.00 moles

Step 5: Calculate moles CO2

For 1 mol CaCO3 we'll have 1 mol 1 mol CaO and 1 mol CO2

Step 6: Calculate mass CO2

Mass CO2 = moles CO2 * molar mass CO2

Mass CO2 = 1.00 moles * 44.0 g/mol

Mass CO2 = 44 grams

It will produce 44 grams of carbon dioxide

The structure of ozone (O3) is bent (or V-shaped), with two covalent bonds between the central oxygen atom and the outer oxygen atoms. The bond angles are approximately 117 degrees. Therefore, the structure of ozone is a bent molecule with the same length of chemical bonds.

The structure of ozone is bent because the oxygen atoms are arranged in a V-shape, with a bond angle of approximately 117 degrees. There are two covalent bonds between the central oxygen atom and the outer oxygen atoms. These bonds have the same length because they involve the same atoms and bond type. Therefore, the structure of ozone is a bent molecule with the same length of chemical bonds.

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(a) Strontium (Sr) is the element when X⁺² a cation that has 36 electrons. (b) Bromine (Br) is the element when X⁻ an anion that has 36 electrons.

To do this, we add or subtract the number of electrons from the base atomic number, which in this case is 36, indicating that the base element is Krypton.

1. X⁺² denotes that we subtract two electrons from Strontium to obtain the isoelectronic atom of Sr⁺², which also has 36 electrons.

Strontium is the element X. (Sr has an atomic number of 38.)

2. X denotes the addition of one electron to Bromine to produce the isoelectronic atom of B r, which also has 36 electrons.

Bromine is the element X. (Br has an atomic number of 35.)

In chemistry, the periodic table of elements is based on the properties of elements in increasing order. It was designed with an element's atomic number in mind. An element's atomic number is simply the number of electrons or protons in the element. A periodic table arranges elements in increasing order of atomic number.

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Complete Question:

What is the identity of the element X in the following ions:

a. X⁺². a cation that has 36 electrons

b. X⁻, an anion that has 36 electrons.

The chemical formula [VBr(CO)(en)₂] corresponds to a vanadium complex that contains one bromine atom (Br), one carbon monoxide molecule (CO), and two ethylenediamine ligands (en).

To draw all of the isomers for this complex, we need to consider the possible arrangements of these ligands around the central vanadium atom (V).

First, let's start with the geometric isomers. These are also called cis-trans isomers, and they result from different arrangements of ligands around a metal ion that cannot be interconverted by a simple rotation. In other words, if you have a cis isomer and you rotate it, you will end up with a trans isomer.

For [VBr(CO)(en)₂], there are two possible geometric isomers:

1. cis-[VBr(CO)(en)₂]: In this isomer, the two ethylenediamine ligands are adjacent to each other, while the bromine atom and the carbon monoxide molecule are on opposite sides of the central vanadium atom. The term "cis" comes from Latin and means "on this side."

2. trans-[VBr(CO)(en)₂]: In this isomer, the two ethylenediamine ligands are on opposite sides of the central vanadium atom, while the bromine atom and the carbon monoxide molecule are adjacent to each other. The term "trans" comes from Latin and means "across."

Now let's move on to the optical isomers. These are also called enantiomers, and they result from the presence of a chiral center in the molecule, which is a carbon atom or a metal ion that has four different ligands attached to it. In other words, if you have an enantiomer and you try to superimpose it on its mirror image, you will not be able to do so.

For [VBr(CO)(en)₂], there are two possible optical isomers:

1. Λ-[VBr(CO)(en)₂]: In this isomer, the two ethylenediamine ligands are arranged in a clockwise direction around the central vanadium atom. The term "Λ" comes from Greek and means "left-handed."

2. Δ-[VBr(CO)(en)₂]: In this isomer, the two ethylenediamine ligands are arranged in a counterclockwise direction around the central vanadium atom. The term "Δ" comes from Greek and means "right-handed."

In summary, the four possible isomers for [VBr(CO)(en)₂] are:

1. cis-Λ-[VBr(CO)(en)₂]

2. cis-Δ-[VBr(CO)(en)₂]

3. trans-Λ-[VBr(CO)(en)₂]

4. trans-Δ-[VBr(CO)(en)₂]

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Answer:

Zinc metals was oxidized ,zinc ions were reduced

Explanation:

The zinc atoms lose electrons and becomes oxidized . And zinc ions gain electrons (becomes reduced)

The redox reaction taking place here, is the zinc metal is oxidized and zinc ions are reduced further by accepting electrons. Hence, option a is correct.

In a redox reaction, one reactant species is oxidized and another one is reduced. Oxidation is the process of loss of one or more electrons to form its higher oxidation state.

Reduction is the process of gaining electrons forming its lower oxidation state. The species which undergoes oxidation is called oxidant and the one reduced is called reductant.

Zn metal have higher negative electrode potential and undergoes oxidation by losing two electrons to form the Zn²⁺ ions. Thus the Zn metal is oxidized.  The Zn²⁺ ions further undergoes reduction to form the metal by gaining electrons.

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Answer:

C

Explanation:

Edge 2022 trust the process

Knowing about the greenhouse effect we have that what intensifies this effect is an increase in gases in the atmosphere that absorb heat.

Greenhouse effect is a natural atmospheric phenomenon responsible for the maintenance of life on Earth. Without the presence of this phenomenon, the temperature on Earth would be very low, around -18ºC, which would make the development of living beings impossible.

Thus, the main cause of the greenhouse effect is industrialization. Due to this process, the burning of fossil fuels has intensified in recent centuries. The main products of the combustion reaction of these reagents are the gases mentioned above as the main ones for the greenhouse effect.

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If the battery was removed, the energy produced by the battery would not be able to continue its path along the circuit.