A technical machinist is asked to build a cubical steel tank that will hold 280 l of water. calculate in meters the smallest possible inside length of the tank. round your answer to the nearest 0.01 m

Answer:

1.  Splitting

2. Combine

Explanation:

The reduction half-reaction in the given reaction is: 2 Fe³⁺ + 2 e⁻ → 2 Fe²⁺.

In the given reaction, tin (Sn) undergoes a redox reaction with iron (Fe) to form tin (IV) oxide and iron (II) ions. The reduction half-reaction is the process where the iron (Fe) ions are reduced from a +3 oxidation state to a +2 oxidation state.

This is represented by the half-reaction: Fe3+ + e- → Fe2+. In this process, Fe3+ gains one electron and gets reduced to Fe2+. The oxidation number of Fe decreases from +3 to +2, indicating a reduction process. This half-reaction occurs simultaneously with the oxidation half-reaction, where Sn is oxidized from +2 to +4.

Together, these half-reactions represent the redox reaction that occurs between Sn and Fe in the given reaction.

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Answer: 8/9

Explanation: took the quiz gang

If the hydrogen gas is combusted and produces 645L of water vapor at 400 kelvin and 1.75 atm, 2796.96 g mass of the zinc is produced .

Using the ideal gas law equation:

PV = nRT

n = (PV) / (RT)

= (1.75 atm * 645 L) / (0.0821 atm·L/(mol·K) * 400 K)

= 42.71 moles

the balanced equation for the reaction between zinc and hydrochloric acid:

Zn + 2HCl -> \(ZnCl_{2}\)  + \(H_{2}\)

1 mole of zinc produces 1 mole of hydrogen gas. Therefore, the moles of zinc are also 42.71.

The molar mass of zinc is 65.38 g/mol.

Mass of zinc = moles of zinc * molar mass of zinc

= 42.71 moles * 65.38 g/mol

= 2796.96 g

Therefore, the mass of the zinc is 2796.96 grams.

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Answer:

Digestive enzymes break down food into smaller building blocks which makes it easier for absorption by the body.

Answer:

Break down the pood particles for their absorption e. g pepsin breaks down protein for its absorption in small intestine. Pepsin is present in stomach

Answer:

Hence, the wavelength of the photon associated is 1282 nm.

Explanation:

Peroxides species shows the correct charge of the oxide ion.

As predicted by the two partially filled outer orbitals, oxygen assumes a negative oxidation state in all of its molecules. The oxide ion O2 is produced when electron transport fills these orbitals. It is thought that each oxygen in peroxides (species that contain the ion O2 2) has a charge of 1.

The carbon and hydrogen atoms have a slight positive charge, while the oxygen atom has a slight negative charge.

There are six valence electrons in the atom of oxygen. The oxygen atom requires two additional electrons in order to complete its valence shell. Adding two more electrons gives the oxygen ion a charge of two because each electron has a single negative charge.

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The number of tablespoons of milk needed for 28 pancakes is determined as 12 tablespoons.

option C is the correct answer.

The number of the tablespoons of milk that would be needed is calculated by applying simple proportion method.

3 tablespoons of milk for 7 pancakes;

3 -----------> 7

? tablespoons of milk for 28 pancakes;

? --------------------> 28

Combine the two equations and solve for the number of tablespoons needed as follows;

? = ( 3 x 28 ) / 7

? = 12

Thus, The number of tablespoons of milk needed for 28 pancakes is determined by applying simple proportion.

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Answer:

Pure Water.

Explanation:

Pure water evaporates faster than salt water.

Answer:

A. the average kinetic energy increases

Explanation:

temperature is a measure of the average kinetic energy of the particles in a sample of matter

\( \huge\mathrm{ \boxed{A} \boxed{n}\boxed{s}\boxed{w}\boxed{e}\boxed{r}}\)

The Correct option is C.)

Above diagram shows how Sodium and Chlorine forms an Ionic bond.

\( \mathrm{2Na + Cl_2 \rightarrow2NaCl }\)

_____________________________

\(\mathrm{ \#TeeNForeveR}\)

Then  there is an increase in Entropy.

A state of disorder, unpredictability, or uncertainty are frequently related with the scientific concept of entropy, which is also a quantifiable physical characteristic. The notion and the phrase are employed in a variety of disciplines, including classical thermodynamics, where they were initially identified, statistical physics, which describes nature at the molecular level, and information theory. It has wide-ranging uses in physics and chemistry, biological systems and how they relate to life, cosmology, economics, sociology, weather science, and information systems, particularly the transfer of information through telecommunication.

The amount of different configurations that the atoms in a system can take depends on its entropy. Entropy can be thought of as a gauge of uncertainty or unpredictability.

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The structure of  n-ethyl-1-hexanamine or n-ethylhexan-1-amine is shown in the image attached below.

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The grams of the C₃H₈O are in the 5 × 10²² molecules is the A) 4.9 g

Given that :

The number of the molecules of the C₃H₈O =   5 × 10²² molecules.

The conversion of the molecules in to the moles is given below :

The number of the moles in 5 × 10²² molecules

=  5 × 10²² / 6.022 × 10²³  moles

= 0.83 × 10⁻¹ moles

The mass = moles × molar mass

The mass = 0.083 ×60

The mass = 4.9g

Thus the mass of the compound C₃H₈O  are in 5 × 10²² molecules is 4.9 g.

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B- Mechanical digestion begins in the mouth, and includes the tearing and grinding of food with teeth.

C- Mechanical digestion uses teeth to grind food and saliva to moisten the food

making it easier to chew.

These points are true.

The temperature at which 0.0828 moles of hydrogen would have a pressure of 1.00 atm and a volume of 55.0 L is 743 K .

The ideal gas law is a fundamental equation of state for an ideal gas.

We can use the Ideal Gas Law to solve for the temperature:

PV = nRT

Where

First, we need to convert the number of moles to moles:

n = 0.0828 mol

Next, we can substitute the given values into the Ideal Gas Law and solve for T:

T = PV/nR = (1.00 atm) x (55.0 L) / (0.0828 mol x 0.0821 L·atm/mol·K) = 743 K

Therefore, the temperature at which 0.0828 moles of hydrogen would have a pressure of 1.00 atm and a volume of 55.0 L is 743 K.

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The element that has the outer shell as has been shown here is gallium.

We know that the quantum numbers are the tools that can be used to be able to obtain the position of the electron in the atom. We know that it gives the description of electrons that are present in the atoms of elements.

In this case, we have the quantum numbers that describe the element as 4,1,-1,+1/2 . This shows that the electron must be in a 4p orbital. This must be an element that is in group 13 of the periodic table.

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Answer: A-, NA+ And OH-

Explanation: Thank me later

1.86 g H₂ is allowed to react with 9.70 g N₂ producing 1.24 g NH₃. the theoretical yield in grams for this reaction under given conditions is 10.54 g.

The balanced chemical equation is given by :

N₂   +   3H₂  ------>   2NH₃

it is clear from the reaction that :

1 mole of  N₂ react with 3 moles of H₂ to produced 2 mole of NH₃.

the molar mass of compounds are :

H₂ = 2 g/mol

N₂ = 28 g/mol

NH₃ = 17 g/mol

3moles of H₂ × 1 g/mol= 6 g  

1 mole of N₂ × 28 g/mol= 28 g

2 moles of 2NH₃  × 17 g/mol = 34 g

now we have to find out the limiting reagent :

28 g of N₂ react with 6 g of H₂ , 9.70 N₂ will react with how much mass of H₂

mass of H₂ = (9.70 g of N₂ × 6 g of H₂) / 28 g of N₂

                  = 2.07 g

but 2.07 g H₂ is not available , only 1.86 g are available .so, H₂ is a limiting reagent.

The theoretical yield in the given case:

mass of NH₃ = (1.86 g of H₂ × 34 g of NH₃ ) / 6 g of H₂

                     = 10.54 g

Thus, 1.86 g H₂ is allowed to react with 9.70 g N₂ producing 1.24 g NH₃. the theoretical yield in grams for this reaction under given conditions is 10.54 g.

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The conserved in the reaction shown :

N₂(g) + 3F₂(g)     ---->  2NF₃(g) is the mass is conserved.

According, to the law of conservation of mass : the mass neither be created nor be destroyed.

N₂(g) + 3F₂(g)     ---->  2NF₃(g)

the mass of N₂ = 28g

the mass of 3F₂ = 114g

the mass of 2NF₃ = 142 g

N₂(g) + 3F₂(g)     ---->  2NF₃(g)

28 g        114 g                   142 g

28 g + 114 g = 142 g

142 g = 142 g

Thus, the mass of the reactant is equal to the mass of the product. the equation follow the law of conservation of mass as the mass of the reactant is equal to the mass of the product.

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To prevent more than one sperm from entering the egg.

What is oocyte?

An oocyte , or ovocyte is a female gametocyte or germ cell involved in reproduction. In other words, it is an immature ovum, or egg cell. An oocyte is produced in a female fetus in the ovary during female gametogenesis. The female germ cells produce a primordial germ cell (PGC), which then undergoes mitosis, forming oogonia. During oogenesis, the oogonia become primary oocytes. An oocyte is a form of genetic material that can be collected for cryoconservation.

When the sperm and egg fuse it triggers a release of calcium ions, which cause the cortical granules inside the egg to fuse with the plasma membrane. As they fuse, these granules release their contents outside of the cell, toward the remains of the zona pellucida.

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ANSWER

Small nuclei combine, then form larger nuclei.

Option C

EXPLANATION

Nuclear fusion is defined as the process in which two or more light stable nuclei combined together to form a larger nuclei

In the star region, elements are squeeze together to produce a larger one in a process called fusion. Star fuse hydrogen atoms into helium. Helium atoms then fuse to create beryllium and the process continues like that until iron is formed.

Therefore, the correct answer is option C

The average atomic mass of Lithium is found to be 6.94 amu. Thus, (d) is the correct answer.

Atomic mass is the total number of protons and neutrons present in the nucleus of the atom when it is at rest. On comparison with protons and neutrons, electrons have negligible mass and thus atomic mass is the total sum of protons and neutrons.

Given:

% abundance of Li-6, Li6 = 7.5%

% abundance of Li-7, Li7 = 92.5%

Atomic mass of Li-6, m6 = 6.015 amu

Atomic mass of Li-7, m7 = 7.016 amu

To find:

Average atomic mass = ?

Formula:

Average atomic mass, \(Avg = \frac{(Li6 * m6) + (Li7 * m7)}{100}\)

Avg = \(\frac{(7.5 * 6.015) + (92.5 * 7.016)}{100}\)

Avg = (45.1125 + 648.98) / 100

Avg = 694.0925 / 100

Avg = 6.940 amu

Result:

Therefore, 6.94 amu is the average atomic mass of Lithium.

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Answer:

Chromium Phosphide is a semiconductor used in high power, high frequency applications and in laser diodes.

Explanation:

The Periodic table of Elements

Answer: 1.5 x 10 24

Explanation:

One mole of NaCl contains 6.022 x 1023 NaCl formula units

In 2.5 moles of NaCl there will be basically 5 moles of ions as per the given data.

A material created by joining two or more distinct elements chemically in science.

A compound in chemistry is a material comprised of two or more separate chemical elements mixed together in a certain proportion.

Chemical connections that are challenging to break are created when the elements interact with one another.

2.5 mol of NaCl contains 5 moles of ions. This is due to the fact that 1 mol of NaCl contains 2 mol of ions, so you must multiply the molecular weight of the molecule by two to obtain the number of ions.

Thus, the answer is 5 moles.

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Answer:

Carnivore, as they obtain food from other animals

Answer:

carnivores

Explanation:

Electron dot structures or Lewis dot structures can be improved by adding valence electrons of each atom and then representing them in form of dots.

Lewis dot structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .

They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.

They are capable of reflecting electronic structure of elements and even the pairing of electrons . In the diagram, each dot represents an electron while a pair of dots represent a bond between the atoms.

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The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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Answer:

Best  

Explanation:

physical, best, greatest.