Write a nuclear equation for the most likely mode of decay for each unstable nuclide.
Part A
Re-165
Express your answer as a nuclear equation.
Part B
Th-221
Express your answer as a nuclear equation.
Part C
-85
Express your answer as a nuclear equation.
Part D
-33

Answer:

The limiting reactant is hydrogen, and the grams HCl produced is 36.175 g.

Explanation:

Balanced equation is 2 H + Cl2 = 2 HCl.

First thing, convert grams to moles via using molar mass.

Molar mass for hydrogen is 1.0079 g/mol. 1g x 1 mol / 1.0079 g = 0.99216 mol.

Molar mass for chlorine is 70.906 g/mol. 55g x 1 mol / 70.906 g = 0.7756748 mol.

Next, determine which is the limiting reactant - probably the fastest way to do it is just to take one of the reactants, say it's the limiting one, and calculate how much of the other reactant would be needed if that really was the limiting reactant, and then compare it to the actual moles of reactant available.

If hydrogen was the limiting reactant at 0.992 mol, you'd need .496 mol of Cl2 to complete the reaction.

If chloride was the limiting reactant at 0.776 mol, you'd need 1.55 mol of H to complete the reaction.

Comparing these numbers to the amounts we actually have available, the limiting reactant is hydrogen.

Once you've determined that, just plug in the amounts to the balanced equation to get the number of moles of HCL produced, which in this case, is just 0.992 mol.

Now, reverse the process that you took to get the moles of reactant, and you have the grams of product produced.

0.992 mol x 36.4609 g / 1 mol = 36.175 g.

Answer: 91.96 grams

Explanation:

Answer:

a

Explanation:

Combination reaction.

Decomposition reaction.

Displacement reaction.

Double Displacement reaction.

Precipitation Reaction.

Answer: The texture is one of the most important physical characteristics of the solid or liquid materials.

Texture is actually the physical feel of the surface layer of a material when we physically touch it.

So,by it's definition we came to know that the texture is only possible for the substances which have physical surfaces.

And the gaseous materials don't have any physical surface to feel it's texture.

That's why gaseous materials including hydrogen gas don't have any kind of texture.

Explanation:

Answer:

A

Explanation:

Have a nice day

Answer:

C) Lipids and Carbohydrates

Explanation:

Lipids, or fats, are stored long-term for energy when an organism cannot find carbohydrates (specifically glucose), which are used as short-term energy.

A pi bond is the result of the d) sideways overlap of two parallel p orbitals.

Pi bonds are bonds that occur as a result of overlapping orbitals of atoms that are not in the bond axis. Each p orbital that contributes to a pi bond has two lobes and has a node at the core.

The pi orbital can hold a maximum of two pairs of electrons. Whereas each electron in a pi bond is also called a pi electron, the pi electrons are used for double bonds or triple bonds. The 2p orbital of carbon has slightly higher energy than the sp2 orbital, so the pi bond formed from two 2p orbitals has somewhat higher energy and is slightly less stable than the sp2-sp2 sigma bond.

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Explanation:

So if V œ T, then V = kT ; if we solve for k under different conditions of volume and temperature......

\( \frac{v1}{t1} = \frac{v2}{t2} \)

temperature is measured in degrees Kelvin.

And

\( v2 = \frac{v1}{t1} \times t2 = \frac{275 . ml}{298 \: . \: k } \times 403 \: . \: k = ?\)

?mL

0.403 L is the new volume where the initial volume is 275 mL and the initial temperature is 273 K.

Gas laws relate to the pressure, volume, and temperature of a gas. Boyle's law—named for Robert Boyle—states that, at constant temperature, the pressure P of a gas varies inversely with its volume V, or PV = k, where k is a constant.

The relationship between volume and temperature is: \(\frac{V_1}{T_1} =\frac{V_2}{T_2}\) where \(V_1\)and \(T_1\) are the initial volumes and \(V_2\) and \(T_2\) are the final volumes.

\(\frac{V_1}{T_1} =\frac{V_2}{T_2}\)

Given data:

\(V_1 =\) 275 mL, \(T_1 =\) 0

\(V_2 =\) 275 mL, \(T_2 =\) 130

Putting all the values in the equation:

\(\frac{V_1}{T_1} =\frac{V_2}{T_2}\)

\(\frac{0.275}{273} =\frac{V_2}{403}\)

\(V_2 =\) 0.403 L

Hence, 0.403 L is the new volume.

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Oxygen has 6 Valence electrons

Valence shell gains two electrons to achieve complete Valence shell

Sulfur has 6 Valence electrons

valence shell gain 2 electrons to achieve full valence shell.

Fluorine, Chlorine, Bromine and Iodine have 7 Valence electrons and gain 1 electron to achieve full valence shell.

Helium has two Valence electrons and gain 2 electron to achieve full valence shell.

Neon, Argon, Krypton, Xenon and Radon have 8 Valence electrons and have full valence shell.

Elements like fluorine , chlorine, bromine and iodine are called halogens. They are the high reactive non-metals in group 17 of the periodic table. They have seven valence electrons and therefore gain one electron to have a full valence shell.

Non-reactive, non-metallic elements in group 18 of the periodic table that include helium , neon , argon  krypton , xenon , and radon are noble gases. They the least reactive of all known elements, because they have  eight valence electrons and hence outer energy levels are full.

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Hydrogen bond in H2O is the strongest intermolecular force.

What is intermolecular force?

Intermolecular forces are those that form between a substance's molecules and have the ability to attract and repel one another. All the physical and chemical properties depend on the type of intermolecular force present in the matter.

Dipole-Dipole Interactions

Ion-Dipole Interactions

Ion Induced Dipole Interactions

Dipole Induced Dipole Interaction

Dispersion Forces or London Forces.

These above are the five types of Intermolecular forces-

The order of the Intermolecular forces where

Ion-dipole force is the strongest

Hydrogen bond

Dipole-dipole force

and dispersion force is the weakest.

Hence, the Hydrogen bond present in H2O is the strongest intermolecular force.

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The strongest intermolecular force is the hydrogen bond in water (H2O).

What is intermolecular force?
Intermolecular forces are those that develop between the molecules of a substance and can cause them to attract or repel one another. The type of intermolecular force that is present in the matter determines all of the material's physical and chemical properties.

Interactions between dipoles
Involvements of Ion-Dipoles
Dipole Interactions Induced by Ions
DID Interaction: Dipole Induced DID
London Forces or Dispersion Forces
These five intermolecular force types are listed above.

The intermolecular forces were in this order:
The strongest force is ion-dipole force.
the hydrogen bond
Force between dipoles
the least powerful is the dispersion force.
The strongest intermolecular force is therefore the hydrogen bond in H2O.

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The reaction that would result in decreased entropy is : ( A ) CO(s) → CO2(g)

Reactions that absorb heat from its surroundings are known as endothermic reactions, Endothermic reactions result in a decreased entropy as the temperature of the surrounding becomes lower than the temperature of the container where the reaction occurs.

Examples of endothermic reactions are : melting and evaporation which results in the change of state from solid to liquid or from solid to gaseous state.

Hence we can conclude that The reaction that would result in decreased entropy is : ( A ) CO(s) → CO2(g)

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Aluminium is a natural material that is widely utilised in a variety of sectors and may be converted into a variety of synthetic goods via various chemical processes.

The following are some examples of synthetic compounds created from aluminium and the accompanying chemical processes:

Thus, these are only a few examples of synthetic goods generated from aluminium and the chemical processes that produce them.

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Your question seems incomplete, the probable complete question is:

What synthetic products are derived from the natural resource aluminum? What kind of chemical processes are used to create these synthetic products?

Answer:

I have a FUNNY feeling I should TAKE you out

Explanation:

Answer:

cause i have a good feeling i should shout you out!

Explanation:

is your name Karina cause if so we have the same name

Volume is measured inside a graduated cylinder

The total pressure of a gaseous mixture that contains three gases with partial pressures is 972 torr.

When more than one gas is present in a container, each gas exerts pressure, which is known as partial pressure. Its partial pressure refers to the pressure of any gas inside the container.

According to Dalton's Law, also known as the Law of Partial Pressures, the combined pressure of a mixture of gases is equal to the sum of their individual partial pressures.

1 - 0.845 atm - 0.854 atm x 760 Torr/atm = 642 torr

2 - 120 torr

3 - 210 mmHg - 1 mmhg is almost equivalent to 1 torr - therefore its 210 torr

total pressure - 642 + 120 + 210 = 972 torr

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Avogadro's Number and the Mole. The mole is represented by Avogadro's number, which is 6.022×1023 atoms or molecules per mol.

The adjacent nucleotides are bound to each other through a phosphodiester bond in a nucleic acid.

Nucleic acid is a biopolymer made up of nucleotide monomers that make up nucleic acid chains. The nucleotide's three components are a five-carbon sugar, a phosphate group, and a nitrogenous base. Nucleic acids are present in all living cells, including viruses and bacteria, and they play a critical role in storing, transmitting, and expressing genetic information. RNA and DNA are two types of nucleic acids.

The phosphate group in one nucleotide forms a phosphodiester bond with the hydroxyl group on the sugar molecule of the next nucleotide in line in nucleic acids. This reaction is carried out by removing a molecule of water, resulting in a strong covalent bond between two nucleotides. These bonds make up the sugar-phosphate backbone of a nucleic acid chain, which is fundamental to its structure.

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Answer:

The answer is "The number of feedings per day and fishes body fat".

Explanation:

In the independent variable, it is the fish feed to its fish, that because it variable affects the factor-dependent. In this case, the fish weight is equal to the dependent variable. In the water storage capacity as well as the conditions are also constant in variable and become maintain but don't alter during the procedure, whereas altering its experiment will modify its tank, which is usually fed into the comparison group-which is used to compare its results to that of therapies.

Answer:

Option 3

Explanation:

Option 3: Instantaneous speed is the speed of an object at a specific time, but average speed is the total distance over the total time. This is why they are called instantaneous and average, because instantaneous is at any one instance and average is the average speed it was moving over the total time which is calculated by the total distance/total time.

Hope this helped!

Answer:

Average Speed

Explanation:

The type of molecule that makes the breakdown of glucose to carbon dioxide and water possible in the human body is an enzyme called "adenosine triphosphate" or ATP.

Adenosine triphosphate or ATP acts as a carrier of chemical energy within cells, providing the necessary energy for various cellular processes. The breakdown of glucose is an essential part of cellular respiration, where ATP is produced through a series of reactions. This process allows for the continuous breakdown of glucose and the release of energy in the form of ATP. In conclusion, ATP is the molecule that enables the constant breakdown of glucose in the human body, despite the fact that this reaction does not occur at a discernible rate at body temperature.

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Explanation:

Acidic radical

Acid radical is the ion formed after the removal of Hydrogen ion (H+) from an acid. Example: When H2SO4 loses H+ ion, it forms HSO4− which is an acid radical.

Basic radical

The ion formed after the removal of hydroxide ion (OH−) from a base is known as basic radical.

Answer: Possibility of a single replacement reaction

Explanation:

The activity of the series of element is determined by the single replacement reactions. The activity series of element can be used to predict the possibility of a single replacement reaction.

A single replacement reaction is one in which one substance is replacing the other. The replacement of a metallic ion in solution by a metal atom higher in the activity series than the metal in solution falls into this category of reactions.

The reaction is depending on the reactivity of the elements. If the reactivity of the elements is very low, then the reaction very slow, some time reaction can not take place. To get reaction there is some driving force is needed.

The relative position of the two elements in the activity series provides the driving force for this kind of reaction. More active elements undergo readily reaction then less reactive like noble gas elements. It very necessary to elements very active to get react.

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The mass of HONH2 required to dissolve in enough water to make 250.0 mL of solution having a pH of 10.00 is 3.20 x 10^-13 g.

The first step in solving this problem is to recognize that HONH2 can act as a weak base in water. To find the mass of HONH2 required to make a 250.0 mL solution of pH 10.00, we need to use the equation for the ionization of a weak base:

HONH2 + H2O ⇌ H3O+ + ONH2-

The equilibrium constant expression for this reaction is:

Kb = [H3O+][ONH2-] / [HONH2]

We can find Kb from the given pH:

pOH = 14.00 - pH = 4.00

pKb = 14.00 - pOH = 10.00

Kb = 1.00 x 10^-10

We also know that the concentration of ONH2- is equal to the concentration of H3O+ in this solution:

[ONH2-] = [H3O+] = 1.00 x 10^-4 M

Substituting these values into the Kb expression and solving for [HONH2], we get:

[HONH2] = Kb / [ONH2-] = 1.00 x 10^-10 / 1.00 x 10^-4 = 1.00 x 10^-14 M

Now we can use the definition of molarity to find the number of moles of HONH2 required:

Molarity = moles of solute / liters of solution

moles of HONH2 = Molarity x liters of solution = 1.00 x 10^-14 mol

Finally, we can use the molar mass of HONH2 to convert moles to grams:

mass of HONH2 = moles of HONH2 x molar mass of HONH2

molar mass of HONH2 = 32.04 g/mol

mass of HONH2 = 1.00 x 10^-14 mol x 32.04 g/mol = 3.20 x 10^-13 g

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Ba(OH)2 has one barium (Ba) atom, two hydroxide (OH) groups, and one oxygen (O) atom. So, the total number of atoms in one molecule of Ba(OH)2 would be:

1 Ba atom + 2 O atoms + 2 H atoms = 5 atoms

To find the number of molecules of Ba(OH)2 from 4.81*10^25 total atoms, we can use the Avogadro's number which states that 1 mole of any substance contains 6.022 x 10^23 particles. So,

1 mole Ba(OH)2 = 5 x 6.022 x 10^23 molecules Ba(OH)2

To find the number of moles of Ba(OH)2, we can divide the total number of atoms by the number of atoms in one molecule:

4.81 x 10^25 atoms / 5 atoms/molecule = 9.62 x 10^24 molecules of Ba(OH)2

Therefore, 9.62 x 10^24 molecules of Ba(OH)2 would be made from 4.81*10^25 total atoms.

Answer:

The ecosystem would collapse.

Explanation:

The food chain is need to keep everything in balance. Each level keeps the level under it in check. Without predators some species might grow in population and overuse their resources thus killing their entire species.

Answer:

Speed

Explanation:

Because That's how fast the Car is traveling.

Answer:

66.24 liters

Explanation:

The mass of one mole of propane is 44 grams.

The volume occupied by one mole of liquid propane within the tank is 0.0863 L

To calculate the volume occupied by one mole of liquid propane within the tank, we can use the ideal gas law given below:

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.

Volume of propane = mass / density

The density of liquid propane at room temperature and atmospheric pressure = 0.51 g/mL

The mass of one mole of propane is the molar mass of propane

Molar mass of propane = 44 g/mol

Volume of one mole of liquid propane = (44 / 0.51 g/mL)

Volume of one mole of liquid propane = 86.3 mL 0r 0.0863 L

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